Publications

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[178] Pi Huang and A. C. Boucouvalas
Modelling IrSC: Proposal Options and Performance Analysis
Accepted for publication in IEE Proceedings Circuits, Devices & Systems, Dec, 2005

[177] Pi Huang, P. Chatzimisios and A. C. Boucouvalas
Optimising IrDA throughput by including processing time with physical layer consideration
Optical Society of America (OSA) Journal of Optical Networking (JON), Issue: June2005, Vol. 4, No. 6, Jun, 2005.

[176] A. C. Boucouvalas
Editor,  Proceedings of IASTED International Conference on Internet and Multimedia Systems and Applications (EuroIMSA 2006), 13-15 February  2006, Innsbruck Austria.

[175] Z. Xu, D. John and A. C. Boucouvalas
Representing Emotional Momentum within Expressive Internet Communication
IASTED International Conference on Internet and Multimedia Systems and Applications (EuroIMSA 2006), 13-15 February 2006, Innsbruck Austria .

[174]  P. Chatzimisios, V.Vitsas, and A. C. Boucouvalas
On Improving Performance for IEEE 802.11 Wireless LAns under Congested and Error Prone Environment
IASTED International Conference on Internet and Multimedia Systems and Applications (EuroIMSA 2006), 13-15 February 2006, Innsbruck Austria .

[173] P. Chatzimisios, V.Vitsas, A. C. Boucouvalas and D.Kleftouris, and M.Tsoulfa

Packet Delay Performance Comparison of the IEEE 802.11 and IrDA Air CSMA/CA Protocols in High-Speed Wireless LANs

IASTED International Conference on Internet and Multimedia Systems and Applications (EuroIMSA 2006), 13-15 February 2006, Innsbruck Austria .

[172] Z. Xu, D. John and A. C. Boucouvalas
The Influence of Expressive Images for Computer Interaction
In
Encyclopedia of Human Computer Interaction. Idea Group.
Edited by:
C. Ghaoui, 2005,  ISBN: 1-59140-562-9.

[171] Z. Xu, D. John and A. C. Boucouvalas
Social Factors and Interface Design Guidelines
In Encyclopedia of Human Computer Interaction. Idea Group.
Edited by:
C. Ghaoui, 2005,  ISBN: 1-59140-562-9.

[170] Z. Xu, D. John and A. C. Boucouvalas
Fuzzy Logic Usage in Emotion Communication of Human Machine Interaction
In Encyclopedia of Human Computer Interaction. Idea Group.
Edited by:
C. Ghaoui, 2005,  ISBN: 1-59140-562-9.

[169] P. Huang and A. C. Boucouvalas

Bluetooth L2CAP Modelling and performance Analysis

Accepted for publication in the Mediterranean Journal of Computers and Networks, Oct 2005.

[168] A. C. Boucouvalas
Challenges in Optical Wireless Communications

Invited Paper in Optics and Photonics News Magazine, August 2005.

[167] A. C. Boucouvalas

Reliability of Indoor and short range FSO

Invited Paper in ICTON 2005, Barchelona, Spain, Session PONEXT II-FSO, paper Tu B3.1, 3-5 July 2005.

[166] P. Chatzimisios and A. C. Boucouvalas

Packet Delay Analysis of the Advanced Infrared (AIr) CSMA/CA MAC Protocol in Optical Wireless LANs

Special issue of International Journal of Communication Systems Vol.18 Number 3, April 2005, pp. 307-331.

[165] A. C. Boucouvalas

Keynote address on Future evolution of Networks

Annual Conference on Telecommunications & Multimedia TEMU 2005, 23-26 June 2005, TEI Crete, Crete Greece.

[164] A. C. Boucouvalas

Indoor optical wireless communication systems and networks

Editorial in Special issue of International Journal of Communication Systems Vol.18 Number 3, April 2005, pp. 1-2.

[163] P. Chatzimisios, A. C. Boucouvalas, V. Vitsas, A. Vafiadis, A. Oikonomidis and P. Huang, 

A simple and effective backoff scheme for the IEEE 802.11 MAC protocol

Invited paper, in Proceedings of the International Conference on Cybernetics and Information Technologies, Systems and Applications (CITSA 2005), Orlando, USA, July 2005.

[162] P. Raptis, V. Vitsas, K. Paparrizos, P. Chatzimisios, A. C. Boucouvalas and P. Adamidis

Packet delay modeling of IEEE 802.11 Wireless LANs

Invited paper, in Proceedings of the International Conference on Cybernetics and Information Technologies, Systems and Applications (CITSA 2005), Orlando, USA, July 2005. 

[161]  A. C. Boucouvalas and  X. Qian
Mode Dispersion and Delay Characteristics of Optical Waveguides Using Equivalent TL Circuits
IEEE Journal of Quantum Electronics, Vol.41, No.7, pp. 951-957, July 2005.

[160]  X. Qian and  A. C. Boucouvalas
Analysis of Leaky Modes and Bragg Fibers Using Transmission Line Equivalent T-Circuits
IEEE Photonics Technology Letters, Vol.17, No.5, pp. 1031-1033, May 2005.

[159] S. Arnon, D. Britz, A. C. Boucouvalas, M. Khavehrad

Optical Wireless Communicatrions

Editorial in Special Issue on Optical Wireless Communications in Applied Optics, 2005.

[158] A. C. Boucouvalas, Z. Xu and D. John
Expressive image Generation: Towards expressive Internet Communications
Accepted for the Special Issue on Context and Emotion Aware Visual Interaction, Journal of Visual Languages and Computing, 2005.

[157]  P. Huang and A. C. Boucouvalas
Modelling the Bluetooth Logical Link Control and Adaptation Layer
PREP 2005, Lancaster, U.K., 30 Mar -- 1 April 2005.

[156]  A. C. Boucouvalas and P. Huang
  Modelling and Optimizing TinyTP over IrDA Stacks
EURASIP Journal of wireless communication network, volume 2005:1, pages: 45-56. DOI: 10.1155/WCN.2005.45

[155]  A. C. Boucouvalas and P. Huang
  OBEX over IrDA: Performance Analysis and Optimization by Considering Multiple Applications
Accepted for the publication  IEEE/ACM Transactions on Networking, (to appear) Feb,  2006.

[154] P. Huang and A. C. Boucouvalas
IrBurst Modelling and Performance Analysis in the Presence of Transmission Errors
Submitted to Journal of Wireless Personal Communications, Oct. 2004 (Kluwer).

[153] P. Huang and A. C. Boucouvalas
Future Personal e-Payment: IrFM
IEEE Magazine on Wireless Communications,
Volume 13,  Issue 1,  Feb 2006 Page(s):60 - 66.

[152]  P. Huang and A. C. Boucouvalas
Modelling OBEX over IrDA Protocol Stacks
Accepted for publication in  International Journal of Communication Systems (Wiley) Oct 2005.

[151] V. Vitsas,  P. Chatzimisios, A. C. Boucouvalas,  P.Raptis, K. Paparrizos and D. Kleftouris,
Enhancing performance of the IEEE 802.11 Distributed Coordination Function via Packet Bursting
INVITED PAPER to appear in Proceedings of the IEEE Global Telecommunications Conference (Globecom 2004) Dallas Texas, 29th Nov-3rd Dec 2004.

[150]  P. Chatzimisios, A. C. Boucouvalas,  and V. Vitsas
Optimisation of RTS/CTS handshake in IEEE 802.11 Wireless LANs for maximum performance
(to appear) in Proceedings of the IEEE Global Telecommunications Conference (Globecom 2004) Dallas Texas, 29th Nov-3rd Dec., 2004.

[149]  X. Qian and  A. C. Boucouvalas
Optical refractive Index Reconstruction from the Near Field
CSNDSP 2004, Newcastle upon Tyne University, 20-22 July 2004.

[148]  P. Huang and  A. C. Boucouvalas
Analysis of the IrFM Digital Payment System
CSNDSP 2004, Newcastle upon Tyne University, 20-22 July 2004.

[147]  P. Huang and  A. C. Boucouvalas
Analysis of the High Speed Infrared Information Transmission Protocol: IrBurst
PGNET 2004, Liverpool John Moores University, Session 4C, Modelling II, 28 June 2004.

[146]  P. Huang and  A. C. Boucouvalas
Modelling IrDA Transport Layer TinyTP
CSNDSP 2004, Newcastle upon Tyne University, 20-22 July 2004.

[145]  P. Chatzimisios, A. C. Boucouvalas,  and V. Vitsas
IEEE 802.11 WLANs Performance analysis in the presence of errors
CSNDSP 2004, Newcastle upon Tyne University, 20-22 July 2004.

[144]  P. Chatzimisios, and A. C. Boucouvalas
Improving performance through optimization of the RTS/CTS mechanism in IEEE 802.11 Wireless LANs
CSNDSP 2004, Newcastle upon Tyne University, 20-22 July 2004.

[143]  P. Chatzimisios, A. C. Boucouvalas,  and V. Vitsas
IEEE 802.11 Wireless LANs: Performance Analysis And Protocol Refinement
EURASIP Journal on Wireless Comunications and Networking,  vol 2005, No 1, 15th March 2005, pp67-78.

[142]  P. Huang and  A. C. Boucouvalas
A Link Layer analytical model for high speed full-duplex Free Space Optical links
International Optical Wireless Communications Symposium, 16-18th September 2003, Warwick University.

[141] P. Barker and  A. C. Boucouvalas
IrDA IrLAP Throughput Optimisation with Physical Layer Consideration
International Optical Wireless Communications Symposium, 16-18th September 2003, Warwick University.

[140]  P. Huang and  A. C. Boucouvalas
OBEX and high speed IrDA links
International Optical Wireless Communications Symposium, 16-18th September 2003, Warwick University.

[139]  P. Huang, P. Chatzimisios and A. C. Boucouvalas,
A study of link propagation delay and processing speed for IrDA links at  Gbit/s data rate
 International Optical Wireless Communications Symposium, 16-18th September 2003, Warwick University.

[138] E. Varthis, P. Theodorou and A. C. Boucouvalas 
Analysis of Burst Acknowledgement Mechanism of IEEE 802.11e MAC Protocol over Infrared Wireless LANs
Proc. IEEE International Conference on Software, Telecommunications and Computer Networks (SoftCOM) 2003, Split, Croatia, October 07-10, 2003.

[137]  P. Chatzimisios, A. C. Boucouvalas and V. Vitsas
Influence of BER on the performance of IEEE 802.11 DCF
IEE  Electronics Letters,  Vol. 39, No. 23, 13th Nov. 2003, pp. 1687-1689.

[136]  P. Chatzimisios, A. C. Boucouvalas and V. Vitsas
Performance Analysis of IEEE 802.11 DCF in the Presence of Transmission Errors
IEEE ICC 2004, Paris, France, paper WN06-8.

[135]  X. Qian and  A. C. Boucouvalas
Propagation Characteristics of Single Mode Optical Fibres with Arbitrary Complex Index Profiles
IEEE Journal of Quantum Electronics, Vol.40, No 6, June 2004,  pp. 771-778.

[134]  P. Huang and A. C. Boucouvalas
OBEX Performance Evaluation and parameter Optimization for High Speed IrDA Links
IEEE ICC 2004, Paris, ISBN: 0-7803-8534-9, Volume: 7, pp. 3849 - 3853.

[133]  A. C. Boucouvalas, P. Chatzimisios and V. Vitsas
IEEE 802.11 MAC Protocol - Packet Delay Analysis
Submitted to IEEE Communications Letters.

[132]  P. Huang and A. C. Boucouvalas
Adaptive Link Layer Performance of High Speed Full-Duplex Free-Space Optical Links
Submitted to IEEE/ACM Transactions on Networking, 2004.

[131]  X. Qian and A. C. Boucouvalas
Accurate Optical Fibre Refractive Index  Profile Synthesis from Mode Near Field
Accepted to National Measurement Conference & British Electromagnetic Measurement Conference, 18-20 Nov. 2003, Cardiff, UK.

[130]  P. Chatzimisios, A. C. Boucouvalas and V. Vitsas
Packet delay analysis of the IEEE 802.11 MAC protocol
IEE Electronic Letters, 4th Sept. 2003, Vol.39, No. 18, pp. 1358-1359.

[129]  P. Chatzimisios, V. Vitsas and A. C. Boucouvalas
 IEEE 802.11: Packet Delay- A Finite Retry Limit Analysis
IEEE Globecom 2003, San Francisco, USA, 2003, Wireless Communications Symposium, Session WC24a-, paper WC24a-4.

[128] V. Vitsas, P. Barker and A. C. Boucouvalas
IrDA Infrared Wireless Communications: Protocol Throughput Optimization
IEEE Wireless Communications Magazine: Special Issue on Optical Wireless Communications April 2003, Vol 10, Issue 2, pp. 22-29.

[127] A. C. Boucouvalas
Optical Wireless Communications: Editorial
IEEE Wireless Communications Magazine: Special Issue on Optical Wireless Communications, April 2003.

[126] A. C. Boucouvalas
Optical Wireless Communications: Editorial
IEE Journal on Optoelectronics Special Issue on Optical Wireless Communications, Vol. 150, No. 5, October 2003, pp. 425-426.

[125]  P. Huang and A. C. Boucouvalas
Gbit/s  Data Rate IrDA IrLAP Protocol Performance Evaluation
Mediterranean Journal of Computers and Networks, Issue: October2005, Vol. 1, No. 2, Oct. 2005.

[124]  X. Qian and  A. C. Boucouvalas
Optical Fibre Refractive Index Profile Synthesis from Near Field
IEEE Globecom 2003, San Francisco, USA, Session Optical Networking and Systems Symposium, OP-6, Paper OP6-5.

[123]  A. C. Boucouvalas, Z. Xu and D. John
Expressive Image Generator for an Emotion Extraction Engine
17th HCI 2003, University of Bath, UK
,  8-12 September 2003,  Session 4, Track 2 Emotions and Computers, pp. 367-381.

[122]  Z. Xu, D. John and A. C. Boucouvalas
Emotion Extraction Engine: Expressive Image Generator
Proceedings of EUROMEDIA 2003:  14-16 April 2003, Plymouth Univ. UK, pp. 23-28.

[121] V. Vitsas and A. C. Boucouvalas
Packet Level Acknowledgement and Go-Back-N protocol performance in Infrared Wireless LANs
International Journal of Communication Systems, 2003, vol 16, pp. 171-191

[120]  P. Chatzimisios, V. Vitsas and A. C. Boucouvalas
Throughput and Delay analysis of IEEE 802.11 protocol
Proc. of the 5th IEEE International Workshop on Networked Appliances, Oct. 30-31, 2002, Liverpool John Moores University, UK, pp. 168-174, ISBN: 0-7803-7686-2.

[119]  A. C. Boucouvalas
Real Time Text-to-Emotion Engine for Expressive Internet Communications
Chapter in Volume 5 Emerging Communication: Studies on New Technologies and Practices in Communication

Book Series IOS Press - Being There: Concepts, Effects and Measurement of User Presence in Synthetic Environments
Edited by: G. Riva , F. Davide and W. IJsselsteijn , 2002,  ISBN: 1 58603 301 8  pp. 305-318.

[118]  A. C. Boucouvalas
Future Evolution of Network Technologies
Keynote Address: 24th International Conference on Information Technology Interfaces, ITI 2002, Cavtat, Croatia, June 24-27, 2002, pp. 3-6.

[117] Z. Xu, D. John and A. C. Boucouvalas
User preferences of a text-to-emotion engine
In IEEE International Symposium on Consumer Electronics 2002 (ISCE'02), 23-26 Sept. 2002, Technical University Ilmenau, Germany, pp. B25-B30.

[116]  D. John and A. C. Boucouvalas
The effect of the
Visual-Auditory dimension of cognitive style
Proc. 24th International Conference on Information Technology Interfaces, ITI 2002, Cavtat, Croatia, June 24-27, 2002, pp. 179-184

[115] P. Barker and A. C. Boucouvalas
Directional and Spatial Asymmetry in IrDA 4PPM InfraredWireless Links with Third User Interference
Proceedings  PGNET2002, Liverpool John Moores University, 17-18 June 2002, pp. 353-358.

[114] P. Chatzimisios and A. C. Boucouvalas
Optimisation of IrLAP IrDA Protocol Including Processor Speed
Proceedings  PGNET2002, Liverpool John Moores University, 17-18 June 2002, pp. 298-303.

[113] A. C. Boucouvalas and V. Vitsas
100 Mbit/s IrDA Optical Wireless Throughput Performance Analysis
IEE Proceedings Optoelectronics, Vol. 150, No. 5, October 2003, pp. 465-472.

[112] A. C. Boucouvalas
Plato, e-Tourism and the Search for Knowledge
P
resented at the e-Tourism Futures workshop: 25th -26th March 2002 University of Surrey School of Management Studies for the Service Sector.

[111] P. Barker, and A. C. Boucouvalas
Interference Induced Asymmetry in IrDA 4PPM Infrared Wireless Links
I
n International Symposium on CSNDSP 2002, Staffordshire University, July 15-17, pp. 479-482.

[110] V. Vitsas and A. C. Boucouvalas
IrDA IrLAP Protocol Performance and Optimum Link Layer Parameters forMaximum Throughput
IEEE GLOBECOM 2002, 17-21st November 2002, Taipei, ROC,  Session HSN-01, Vol. 3, pp. 2270-2275.

[109] D. John, and A. C. Boucouvalas
Multimedia Tasks and User Cognitive Styles
International Symposium on CSNDSP 2002, Staffordshire University, July 15-17, pp. 30-33.

[108] Z. Xu and A. C. Boucouvalas
Text-to-Emotion Engine for Real Time Internet Communication
I
n International Symposium on CSNDSP 2002, Staffordshire University, July 15-17, pp. 164-168.

[107] V. Vitsas and A. C. Boucouvalas
Effectiveness of Selective Reject (SREJ) Automatic Repeat Request (ARQ) scheme with RR-coding in Infrared Wireless LANs
International Symposium on CSNDSP 2002, Staffordshire University, July 15-17, pp. 495-498.

[106] P. Chatzimisios and A. C. Boucouvalas
IrLAP IrDA Protocol Throughput Dependence on Processor Speed
International Symposium on CSNDSP 2002, Staffordshire University, July 15-17, pp. 272-275.

[105] V. Vitsas and A. C. Boucouvalas
Automatic Repeat Request Schemes for Infrared Wireless Communications
IEE Electronics Letters, 28th Feb 2002, Vol. 38, No. 5 pp. 254-246.

[104] V. Vitsas and A. C. Boucouvalas
Performance Analysis of the Collision Avoidance Procedure of the Advanced Infrared (AIr) CSMA/CA Protocol for Wireless LANs.
IEEE VTC, 6-10th May 2002,vol.3, pp. 1502-1506.

[103] V. Vitsas and A. C. Boucouvalas
Effectiveness of Packet Level Acknowledgement in Infrared Wireless LANs
Published in IEEE VTC, 6-10th May  2002, vol. 4, pp. 1814-1818.

[102] V. Vitsas and A. C. Boucouvalas
Performance Analysis of the Advanced Infrared (AIr) CSMA/CA MAC Protocol for Wireless LANs
Wireless Networks 9, pp. 495-507, 2003.

[101] V. Vitsas and A. C. Boucouvalas
Optimisation of  IrDA IrLAP Link Access protocol
IEEE Transactions on Wireless Communications, Vol. 2, No. 5,  September 2003, pp. 926-938.

[100] P. Barker, V. Vitsas and A. C. Boucouvalas
Simulation Analysis of the Advanced Infrared (AIr) MAC Wireless Communications Protocols
IEE Proceedings Circuits Devices and Systems, Vol. 149, No. 3, June 2002, pp. 193-197.

[99] P. Barker and A. C. Boucouvalas
Performance comparison of IEEE 802.11 and AIr infrared wireless MAC Optical  Protocols
Proceedings of  PGNet 2001, Liverpool John Moores University, UK, 18th-19th June 2001, pp. 113-118.

[98] V. Vitsas and A. C. Boucouvalas
Simultaneous Optimisation of Window and frame Size for IrDA IrLAP Links
IEE Electronic Letters, 2nd August 2001, Vol.37, No.16, pp. 1042-1043.

[97] A. C. Boucouvalas, V.Vitsas
100 Mb/s IrDA Protocol Performance Evaluation
Proceedings of  IASTED International Conference on Wireless and Optical Communications
(WOC 2001) June 27-29, 2001 Banff, Canada, pp. 49-57.

[96] V. Vitsas, A. C. Boucouvalas
Window and frame size adaptivity for maximum throughput in IrDA links
Proceedings of  'The 3rd Electronic Circuits and Systems Conference , Slovak University of Technology in Bratislava,
Bratislava, Slovakia on September 5-7, 2001, pp. 147-152.

[95] V. Vitsas, A. C. Boucouvalas
Performance Evaluation of IrDA Advanced Infrared AIr -MAC Protocols
Proceedings of  'The fifth Multi-Conference on Systemics, Cybernetics, and Informatics', Orlando, 22-25 July USA, 2001, Vol.IV, pp. 347-352.

[94] D. John, A. C. Boucouvalas
The Effect Of Cognitive Style On User Performance In Tasks Using Different Types Of Media
Proceedings of  EuroMedia 2001, Valencia, Spain, 18-20 April 2001, pp. 274-278.

[93] V. Vitsas, A. C. Boucouvalas
Performance Analysis of the AIr-MAC Optical Wireless Protocol.
In ICSECIT 2001 International Conference on System Engineering , Communications and Information Technologies, Department of Electrical Engineering, University of Magallanes, Punta Arenas, April 16-19, 2001, Chile.

[92] A. C. Boucouvalas, V.Vitsas
Optimum Window and Frame Size for IrDA Links.
I.E.E. Electronic Letters,  Vol.37, No.3, 1st Feb. 2001, pp. 194-196, .

[91] A. C. Boucouvalas and H. Chowdhury
A Real Time Text-to-Emotion Engine for Expressive Internet Communications
In Proceedings of ED-MEDIA 2001 Tampere, Finland.

[90] V. Vitsas, A. C. Boucouvalas
Throughput Analysis of the IrDA IrLAP Optical Wireless Link Access Protocol.
In proceedings ConfTele 2001, April 23-24, 2001, Portugal, pp. 225-229.

[89] V. Vitsas, A. C. Boucouvalas
IrDA IrLAP Protocol Throughput Performance Analysis for Optical Wireless Links.
Proceedings of IWNA'2000, New Jersey, USA, 30th Nov-1st Dec. 2000.  (IEEE BEST PAPER AWARD)

[88] Z. Ghassemlooy and A. C. Boucouvalas
Optical Wireless Communications.
Editorial International Journal of Communications Vol. 13, 2000, pp. 517-518.

[87] A. C. Boucouvalas, Z. Ghassemlooy
Editorial, Special Issue on Optical Wireless Communications
IEE Proceedings J, Optoelectronics,Vol.147, Aug. 2000, pp. 279.

[86] A. C. Boucouvalas, Editor of
Proceedings of 2nd International Symposium on Communication Systems, Networks and DSPs
CSNDSP 2000, 18-20 July 2000, Bournemouth, UK, Bournemouth, UK, ISBN 1-85899-107-2.

[85] P. Barker, A. C. Boucouvalas
Modelling of IrDA and AIr Wireles Infrared Communication Protocols.
PG Net 2000. Liverpool John Moores Univ., June 19-20, 2000, pp. 137-142.

[84] D. John and A. C. Boucouvalas
The Effect Of Cognitive Style on User Performance With Audio
Euromedia 2000, Antwerp, Belgium, 8-10th May 2000, pp. 161-165.

[83] H. Chowdhury and A. C. Boucouvalas
Text-to-Expression Remote Real Time Communications
International Symposium on Communication Systems, Networks and DSPs, 2000, Bournemouth, UK.

[82] D. John and A. C. Boucouvalas
Recommendations to improve user performance with text user interfaces and imager user interfaces dependent on user cognitive style.
International Symposium on Communication Systems, Networks and DSPs, 2000, pp. 354-357, Bournemouth, UK.

[81] P. Barker and A. C. Boucouvalas
A simulation model of the Advanced Infrared (Air) MAC protocol using OPNET
International Symposium on Communication Systems, Networks and DSPs, 2000, pp. 153-156, Bournemouth, UK.

[80] A. C. Boucouvalas and P. Barker
Asymmetry in optical wireless links
IEE Proceedings J, Optoelectronics,Vol.147, Aug. 2000, pp. 315-321.

[79] D. John and A. C. Boucouvalas
User Performance With Audio: The Effect Of Subject's Cognitive Styles.
Educational Psychology, Vol. 22, No. 2, 2002, pp. 133- 147.

[78] D. John and A. C. Boucouvalas
Comparing user performance with interfaces designed to suit their cognitive style..
IEE European Workshop on Distributed Imaging, November 18-19, 1999, Savoy Place, London, pp. 5/1-5/6. Place, London.

[77] D. John, A. C. Boucouvalas
Comparing user cognitive style and performance with text and image user interfaces..
IEE European Workshop on Distributed Imaging, November 18-19, 1999, Savoy, pp. 4/1-4/6. Place, London.

[76] H. Chowdhury and A. C. Boucouvalas
Expressive real time communications
IEE European Workshop on Distributed Imaging, November 18-19, 1999 Savoy Place, London, pp. 11/1-11/5.

[75] P. Barker, A. C. Boucouvalas and V. Vitsas
Performance Modelling of the IrDA Infrared Wireless Communications Protocol
International Journal of Communication Systems, vol.13, 2000, pp. 589-604.

[74] A. C. Boucouvalas, P. Barker
Asymmetric throughput in optical wireless links.
Second Electronic Circuits and Systems Conference, Bratislava, Slovakia, September 1999, pp. 129-134.

[73] A. C. Boucouvalas, P. Barker
Asymmetric throughput in IrDA links.
IEE Colloquium on Optical Wireless Communications 22nd June 1999, pp. 7/1-7/5.

[72] P. Barker, A. C. Boucouvalas
Effect of random alignment sway on the performance of IrDA handheld device links.
IEE Colloquium on Optical Wireless Communications 22nd June,1999, pp. 9/1-9/4.

[71] A. C. Boucouvalas, P. Barker
IrLAP protocol performance analysis of IrDA wireless communications.
IEE, Electronics letters, Vol.34,no.25, 1998, pp. 2380-2381.

[70] P. Barker, A. C. Boucouvalas
Performance modeling of the IrDA protocol for Infrared Wireless Communications:
IEEE Communications magazine, Vol.36, No.12, December 1998, pp. 113-117.

[69] D. John, J. J. Smith, D. Heathcote, A. C. Boucouvalas
Telecare Companion: An Adaptive Telecare system
1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, UK, 6-8 April 1998, Vol.2, pp. 603-606.

[68] P. Barker, A. C. Boucouvalas
A simulation modeling of IRDA infrared communication protocol.
1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, UK, 6-8 April 1998, pp. 2-5.

[67] P. Barker, A. C. Boucouvalas
Performance Analysis of the IrDA protocol in wireless communications.
1st International Symposium on Communication Systems and Digital Signal Processing, Sheffield, UK, 6-8 April 1998, pp. 603-606, 6-9.

[66] P. Barker, A. C. Boucouvalas
IrDA Protocol Analysis for Short Range IR Data Communication
Fourth Communication Networks Symposium, Manchester Metropolitan University, 7-8th July 1997, pp. 224-227.

[65] A. C. Boucouvalas
Free Space optical Communications:
Guest editorial in IEE Proceedings J, Optoelectronics. Vol.143, No 6, October 1996, pp. 329.

[64] A. C. Boucouvalas
Indoor ambient light noise and its effect on wireless optical links:
IEE Proceedings J, Optoelectronics. Vol.143, No 6, October 1996, pp. 334-338.

[63]. A. C. Boucouvalas, J. Jerrams-Smith, and D. Heathcote
Interference Induced IR Link Spatial Asymmetries,
Third Communication Networks Symposium, Manchester Metropolitan University, 8-9th July 1996, pp. 214-219.

[62]. Jennifer Jerrams-Smith, D. Heathcote and A. C. Boucouvalas
Communication Issues for Users of networked Multimedia/Hypermedia Systems,
Third Communication Networks Symposium, Manchester Metropolitan University, 8-9th July 1996, pp. 48-53.

[61]. A. C. Boucouvalas
Ambient light noise and its effect on receiver design for indoor optical wireless links:
ICC'96, June 23-27, Dallas Texas, USA.

[60]. A. C. Boucouvalas
Symmetry of IRDA Optical Links
IEE Colloquium on Free Space Communication Links, paper No. 6, 19th February 1996, IEE Savoy Place, London, pp. 6/1-6/8.

[59]. A. C. Boucouvalas
IEC 825-1 Eye Safety Classification of some consumer electronic products:
IEE Colloquium on Free Space Communication Links, paper No. 13, 19th February 1996, IEE Savoy Place, London, pp. 13/1-13/6.

[58]. A. C. Boucouvalas:
Eye safety issues of free space optical links.
Published in FOCUS magazine, June 1995.

[57]. A. C. Boucouvalas:
Ambient light noise and its effect on receiver design for free space optical links:
Second Communication Networks Symposium, Manchester 10-11 July 1995, pp. 54-63.

[56]. A. C. Boucouvalas:
Wave propagation in biaxial waveguides using equivalent circuits in Laplace Space.
11th U.K. Performance Engineering of Computer and Telecommunications Systems, at Liverpool John Moores University, 5th-6th Sept. 1995, pp. 258-266.

[55]. A. C. Boucouvalas:
Probability of undetected errors in Optical wireless links:
SPIE Proceedings on Wireless Data Transmission, 23-25 October 1995, vol. 2601, Philadelphia, USA, pp. 247-255.

[54]. A. C. Boucouvalas:
Asymmetry of free space optical links:
SPIE Proceedings on All Optical Communication Systems: Architecture, Control, and Network Issues: Philadelphia, USA, 25-26 October 1995, vol. 2614, pp. 69-76.

[53]. A. C. Boucouvalas:
Free space infrared optical links: Eye safety issues.
International Conference on Multimedia Communications, April 11-12, 1995, Southampton, UK, pp. 205-209.

[52]. S. D. Walker, A. C. Boucouvalas, D.G. Cunningham, and A.C. Coles
Design techniques for subcarrier multiplexed broadcast optical networks
IEEE Journal on Selected Areas in Communications September 1990 Vol.8 No. 7 pp. 1276-1284.

[51] A. C. Boucouvalas, M. O'Mahony
Optical amplifiers for communication
Guest editorial of a special issue of IEE Proc. J 'Optoelectronics' Vol. 137, Pt J, No 6, Dec. 1990.

[50] A. C. Boucouvalas, N.S. Rayit, M. Greaves
Special shaped fibres for distributed sensors
'The Distributed Fibre Optic Sensing Handbook' Edited by J. Dakin, ISF Publications, pp. 113-115, published in 1990.

[49] A. C. Boucouvalas
Fibre Optic Components
Chapter in book entitled 'Principles of Modern Optical Systems', Artech House, published in 1989, pp. 221-268.

[48] D G Cunningham A Coles and A. C. Boucouvalas
Intensity noise in lightwave fibre systems using LED transmitters.
Electronics Letters, 26th October 1989 Vol. 25 No. 22 pp. 1481-1482.

[47] S D Walker, A. C. Boucouvalas D G Cunningham and A Coles
New pseudo-random sequence measurement technique for subcarrier multiplexed distribution networks.
OFC 90 22-26 January 1990 San Fransisco California, paper WH 2.

[46] S D Walker, A. C. Boucouvalas
Optimum design of subcarrier optical networks for local loop Applications
IEE Colloquium on 'Fibre optic LANs and Techniques for the Local Loop'. Savoy Place, 17 March 1989, paper No 12.

[45] S D Walker, A Coles, D C Cunningham, and A. C. Boucouvalas
'Maximum loss budget criteria for subcarrier multiplex broadcast passive optical networks'
Electronics Letters, 3 August 1989, Vol 25, No 16, pp. 1023-1025.

[44] A. C. Boucouvalas and S. C. Robertson 'Use of equivalent tube index (ETI) for optical fibre characterisation'
IEE Colloquium on 'Optical Fibre Measurements', IEE Savoy Place, 1st May 1987 Paper No.11.

[43] S. C. Robertson and A. C. Boucouvalas
Use of equalisation wavelength for single mode fibre characterisation
IEE Colloquium on 'Optical Fibre Measurements', IEE Savoy Place, 1st May 1987, Paper No7.

[42] A. C. Boucouvalas and G. Georgiou
Methods for fine tuning the wavelength response of single mode optical fibre taper filters
Electronics Letters, Vol. 23, No 8, 9th April 1987, pp. 410- 411.

[41] A. C. Boucouvalas and G. Georgiou
Methods for fine tuning the wavelength response of single mode optical fibre taper filters
IEE Colloquium on 'High Capacity Optic Systems' IEE Savoy Place, London, 19th February 1987, pp. 13/1-13/4.

[40] G. Georgiou and A. C. Boucouvalas
Passive fibre optic components using dispersion shifted fibres
IEE Colloquium on 'High Capacity Fibre Optic Systems', IEE Savoy Place, London, 19 February 1987, pp. 12/1-12/4.

[39] G. Georgiou and A. C. Boucouvalas
Twisting effects on the wavelength response of single mode optical fibre tapered couplers
CLEO, April 1987.

[38] A. C. Boucouvalas and S. C. Robertson
Simple technique for measurement of the equalization wavelength in single mode optical fibres

Electronics Letters, Vol. 23, No 5, 26 February 1987, pp. 215-216.

[37] S. P. Shipley, G. Georgiou and A. C. Boucouvalas
Compact all fibre Mach-Zehnder devices
IEE Proc. J, 'Optoelectronics', Vol. 134, No 3, June 1987, pp. 203-208.

[36] A. C. Boucouvalas and G. Georgiou
Concatenated tapered coaxial coupler filters
IEE Proc. J, Optoelectronics, Vol. 134, No 3, June 1987, pp. 191-196.

[35] A. C. Boucouvalas and G. Georgiou
Concatenated tapered coaxial couplers filters
OFC/IOOC, Reno, Nevada, 1987, paper THB3.

[34] A. C. Boucouvalas, S. C. Robertson and J. Walker
Optical fibre far field ESI determination using the equalisation wavelength
Symposium on Optical Fibre Measurements, Boulder, Colorado, 9-10 September 1986, pp. 137-140.

[33] A. C. Boucouvalas and G. Georgiou
Tapered coaxial coupler sensors.
OFS 86, Tokyo, Japan, 7-9 October 1986, pp. PD-2-1, PD-2-5.

[32] G. Georgiou, A. C. Boucouvalas and P. Mossman
Wavelength division multiplexer/demultiplexers with high isolation for single mode optical fibre systems
Sino-British Joint Meeting on 'Optical Fibre Communication Beijing, China: 9-11 May 1986.

[31] A. C. Boucouvalas, N. S. Rayit, and M. P. Greaves
D shape optical fibres for sensing Applications
4th International Symposium on Optical and Optoelectronic Applied Science and Engineering, March 1987, The Hague, Netherlands.

[30] A. C. Boucouvalas, and G. Georgiou
Tapering of single mode optical fibres
IEE Proc. J , 'Optoelectronics', Vol. 13, No 6, Dec. 1986, pp. 385-392.

[29] A. C. Boucouvalas, N. S. Rayit and M. Greaves
Special Shaped fibres for distributed sensors
IEE Colloquium on 'Distributed Optical Fibre Sensors', IEE Savoy Place, 12 May 1986.

[28] A. C. Boucouvalas, G. Georgiou and S. Shipley
Fibre optic interferometric devices
IEE Colloquium on 'Advanced Fibre Waveguide Devices', IEE Savoy Place, 12 May 1986.

[27] A. C. Boucouvalas and G. Georgiou
Concatenated tapered coaxial couplers
IEE Colloquium on Advanced Fibre Waveguide Devices, IEE Savoy Place, 21st May 1986.

[26] A. C. Boucouvalas and G. Georgiou
A method for beam forming and fabricating optical fibre gap devices
12th ECOC, Barcelona, Spain, 22-25 September 1986, pp. 361-364.

[25] A. C. Boucouvalas and G. Georgiou
External refractive index response of tapered coaxial couplers
Optics Letters, Vol 2, No 4, 1986, pp. 257-259.

[24] G. Georgiou and A. C. Boucouvalas
High isolation single mode wavelength division multiplexer/demultiplexer
Electronic Letters, Vol. 22, No 2, 1986, pp. 62-63.

[23] A. C. Boucouvalas and S. C. Robertson
Optical waveguide transverse transmission line equations and their use in determining mode properties

JOERS Advanced Fibre Measurement Symposium, National Physical Laboratories, London, 10 September 1985.

[22] A. C. Boucouvalas and S. C. Robertson
Characterisation of single mode optical fibres by measurement of equalisation wavelengths

JOERS Advanced Fibre Measurement Symposium, National Physical Laboratories, London, 10 September 1985.

[21] A. C. Boucouvalas and G. Georgiou
Biconical taper coaxial coupler filters
Electronic Letters, Vol. 21, No 20, 1985, pp. 1033-1034.

[20] A. C. Boucouvalas and G. Georgiou
Fibre optic interferometric electrically tunable filter using the thermo-optic effect
2nd International Symposium on Optical and Electro-Optical Applied Science and Engineering: Cannes, France: 25-29, November 1985, SPIE, Vol. 585, pp. 132-135.

[19] A. C. Boucouvalas and G. Georgiou
Biconical taper coaxial optical couplers
Electronic Letters, Vol 21, No 19, 1985, pp. 864-865.

[18] A. C. Boucouvalas and G. Georgiou
Tapering of single mode optical fibres
IOOC- ECOC, 1-4th October 1985, Venice, Italy.

[17] G. Georgiou and A. C. Boucouvalas
Low loss single mode optical couplers
IEE Proc. J, 'Optoelectronics', Vol. 132, 1985, pp. 297-302.

[16] A. C. Boucouvalas
Coaxial optical fiber coupling
IEEE Journal of Lightwave Technology, Vol. 3, No 5, October 1985, pp. 1151-1158.

[15] A. C. Boucouvalas and G. Georgiou
Fibre optic interferometric tunable switch using the thermo-optic effect
Electronic Letters, Vol 21, No 11, 23 May 1985, pp. 512-514.

[14] A. C. Boucouvalas
Mode cutoff frequencies of coaxial optical couplers
Optics Letters, Vol 10, Jan. 1985, pp. 95-97.

[13] A. C. Boucouvalas and G. Georgiou
Fibre optic interferometric tunable switch using the thermo-optic effect
IEE Colloquium on Advances in Coherent Optic Devices and Technologies IEE Savoy Place, London, 26 March 1985.

[12] A. C. Boucouvalas and G. Georgiou
Fabrication of low loss single mode directional couplers
Colloquium on 'Fibre Optic Gyroscopes and Monomode Optical Components' at the University of Strathclyde, Glasgow, Scotland 1-2 November 1984.

[11] C. D. Papageorgiou, J. D. Kanellopoulos and A. C. Boucouvalas
A study of the operational characteristics of optical structures using the 'resonance' technique
IEEE Melecon, 1983, Athens, Greece.

[10] C. D. Papageorgiou and A. C. Boucouvalas
Computation of mode propagation constants and cutoff frequencies of optical planar layers using the 'resonance' technique
Optica Acta, Vol 31, No 5, 1984, pp. 555-562.

[9]. C. D. Papageorgiou, J. D. Kanellopoulos and A. C. Boucouvalas
Cutoff frequencies of optical planar/cylindrical structures using the 'resonance' technique
International Symposium on Optical Waveguide Sciences, 20-23 June 1983, Kwelin, China.

[8] A. C. Boucouvalas
Coaxial Optical Fibres
Ph.D. Thesis, Imperial College, University of London, 1982.

[7] A. C. Boucouvalas
Use of far field radiation pattern to characterise single mode symmetric slab waveguides
Electronics Letters, Vol19, 3rd Feb. 1983, pp. 120-121.

[6] A. C. Boucouvalas and C. D. Papageorgiou
Cutoff frequencies in optical fibres of arbitrary refractive index profile using the 'resonance' technique
IEEE Journal of Quantum Electronics, Vol QE-18, No 12, Dec. 1982, pp. 2027-2031.

[5] C. D. Papageorgiou and A. C. Boucouvalas
Propagation constants of cylindrical dielectric waveguides with arbitrary refractive index profile, using the 'Resonance' technique
Electronics Letters, Vol 18, No 18, 2 September 1982, pp. 768-788.

[4] J. R. Cozens, A. C. Boucouvalas, A. Al Assam, M. L. Lee and D. G. Morris
Optical Coupling in Coaxial Fibres
Electron. Letters, Vol. 18, No 15, 22 July 1982, pp. 679-681.

[3] J. R. Cozens and A. C. Boucouvalas
Coaxial Optical Couplers
Electronic Letters, Vol 18, No3, 22 July 1982, pp. 138-140.

[2] J. R. Cozens, A. C. Boucouvalas and N L Webster
Coaxial Optical Couplers
1st European Conference on Integrated Optics, London 1981, p. 102.

[1] A. C. Boucouvalas
Use of Far Field Radiation Pattern to Characterise Single Mode Fibres
M.Sc. and D.I.C. Thesis, Imperial College, 1979. Results from my work here also appeared in a book entitled 'Elliptical Waveguides, by R.B. Dyott, published by Artech House, 1996.

2.         TECHNICAL REPORTS: (Samples while at  HP Labs only)

1.  Optical Techniques for Networks: A proposal: HPL-ISC-TM-89-057 January 1989

2.  Design Techniques for Subcarrier Multiplexed Broadcast Optical Networks: HP Labs Bristol, HPL-ISC-TM-89-103, July 1989

3.  High Sensitivity optical feedback receiver design for subcarrier video broadcast network Applications: HPL-ISC-TM-89-108, July 1989

4.  New pseudorandom sequence measurement technique for subcarrier multiplexed distribution networks: HPL-ISC-TM-89-115, August 1989

5.  Maximum loss budget criteria for subcarrier multiplex broadcast passive optical networks: HPL-ISC-TM-89-062 May 1989

6.  Optical Attenuators The Next Step: HP Labs Bristol, 1991 7. Optical Wavelength Measurement. Market and Technology Considerations: HP Labs Bristol, 1991

8. Free Space Optical Links Systems Considerations: HP Labs Bristol, January 1992

9.  PPM encoding for IR Links: HP Labs Bristol, January 1993

10. UART or PLL for Desk-Net Receivers: HP Labs Bristol, October 1991 11. Is 10 Mbit/s Desk-Net possible?: HP Labs Bristol, November 1992 12.  Infrared Optical Links for Desk-Net: HP Labs Bristol, October 1992 13. Calculations of Undetected Errors for the Photonics Inc. IR Link: HP Labs Bristol, February 1993 14.  Use of SDLC framing for Desk-Net: HP Labs Bristol, January 1993 15.  Choice of 32 bit or 16 bit CRC for Desk-Net: HP Labs Bristol, January 1993

16.  Desk-Net: An Interconnection for a Family of Information Appliance: HP Labs Bristol, March 1993

17.  Probability of undetected errors of Optical Wireless Links: HP Labs Bristol, 1993

18.   5 Mbit/s Manchester receiver for IR links: HPL-94-15 Labs Bristol, February 1994

 3.   PRESS INTERVIEWS (samples)

  1. Multimedia Goes Down the Line: Electronics Times 25th April 1995

  2. Companias estudian unir magellanes a fibra optica: La Presna Austra, Punta Arenas Chile 19 April 2001

  3. Victims We know so well: Daily Echo 15th January 2003

  4. Optical antenna may allow 'point and pay' cards?12th Nov 2002, New Scientist .com

  5. Plato, e-tourism and the search for knowledge: Horizon, Bournemouth university newsletter: Autumn 2002 Issue 13, pp. 14-15

4. PATENTS

1. Inventors: A. C. Boucouvalas, G. A. Georgiou
Title: Tunable Optical Fibre Filters (MZI)
File: HR/2711
Patent Application No: 8513771
Date: 27 May 1986

2. Inventors: A. C. Boucouvalas
Title: Optical Couplers (Thermo-optic coupler)
File: HR/2454
Patent Application No: 8527939
Date: 13th Nov. 1985

3. Inventors: G. A. Georgiou, A. C. Boucouvalas
Title: Fibre Optic Devices (Conical Fibre Sensor-Single fibre taper)
File: HR/2832
Patent Application No: 8529862
Date: 4th December 1985

4. Inventors: G. A. Georgiou, A. C. Boucouvalas
Title: Concatenated Coupler (Tapers)
File: HR/2804
Patent Application No: 8529861
Date: 4th December 1985

5. Inventors: G. A. Georgiou, A. C. Boucouvalas
Title: WDM Coupler
File: HR/2843
Patent Application No: 8529864
Date: 4th December 1985,
Re-Filed Patent Appplication No: 8629039
Date: 4th December 1986

6. Inventors: G. A. Georgiou, A. C. Boucouvalas
Title: Delay Lines
File: HR/3116
Priority Patent Application No: 8529528
Date: 10th December 1986

7. Inventors: A. C. Boucouvalas, S. C. Robertson
Title: Non-Linear optical Devices
File: HR/3135
Priority Patent Application No: 874013
Date: 20th February 1987

8. Inventors: A. C. Boucouvalas, G. A. Georgiou
Title: Mach Zehnder Interferometer
File: HR/2804
Priority Patent Application No: 8512962
UK Patent Application GB 2163549 A
Date: 22 May 1985

9.Inventors: A. C. Boucouvalas, G. A. Georgiou
Title: Coaxial Couplers 
File: HR/2724 EPC
Priority Patent Application No: GB/29.07.85/ GB 8519086
Date: 25th July 1985

10. Inventors:  A. C. Boucouvalas, G. A. Georgiou
Title: Optical Fibre Filters  

File: HR/2725 EPC
Priority Patent Application No: GB/29.07.85/ GB 8519087,
Date: 25th July 1986

11. Inventors:  G. A. Georgiou, A. C. Boucouvalas
Title: Fibre Optic Coupler
File: HR/2714
Fabrication of fused biconical couplers with sensitive cross section.

12. Inventors:A. C. Boucouvalas, G. A. Georgiou
Title: Interferometers
File: HR/2762 EPC
Patent Application No: 86306010.9
UK Patent Application GB /05.08.85/GB 851908
Date: 5th August 1985

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