Professor Tim O'Farrell

FREng, PhD, MSc, BSc

School of Electrical and Electronic Engineering

Chair in Wireless Communication

Communications Research Group

Headshot of Tim O'Farrell
Profile picture of Headshot of Tim O'Farrell
t.ofarrell@sheffield.ac.uk
+44 114 222 5193

Full contact details

Professor Tim O'Farrell
School of Electrical and Electronic Engineering
Profile

I received my BSc degree in Electrical and Electronic Engineering from the University of Birmingham and my MSc and PhD degrees in Electrical and Electronic Engineering from the University of Manchester.

I am the Chair Professor in Wireless Communication at the University of Sheffield and I am a Fellow of the Royal Academy of Engineering (FREng).

In the field of wireless communications, I have made significant contributions to waveform and energy-efficiency design for radio access networks (RANs) and I have translated significant research into industry through standards, products, and practices.

My research is focused on wireless communications systems, specialising in radio systems engineering, physical layer signal processing, and energy-efficient (EE) wireless networking.

As Co-Founder and CTO of Supergold Communication Limited, I accomplished strategic breakthroughs in determining the IEEE802.11g Wi-Fi standard. Also, I have developed standardised practices for measuring EE in RANs and produced software-tools for modelling RAN performance.

I have led 27 major research projects with a total research spend of approximately £29M. I led the UK Research Strategy Community Organisation in Communications, Mobile Computing and Networking within the Engineering and Physical Sciences Research Council portfolio (CommNet II, EP/N007824/1) and currently, I am the director of the UKRI National 6G Radio Systems Facility (EP/X030016/1).

Qualifications
  • PhD Electrical and Electronic Engineering, University of Manchester
  • MSc Electrical and Electronic Engineering, University of Manchester
  • BSc Electrical and Electronic Engineering, University of Birmingham
Research interests
  • Multiple-access (OFDMA, CDMA & MC-CDMA)
  • Forward error correction coding and iterative decoding
  • Adaptive coding and modulation
  • MIMO and Massive MIMO techniques
  • Spreading sequence design
  • Wireless visible light communication
  • Energy and spectrum efficient wireless networking
  • MAC and packet scheduling techniques
  • Radio access network planning and optimisation (2G, 3G, 4G & 5G)
  • Large scale dynamic system level simulation (WCDMA, HSPA, LTE, LTE-Advance, 5G)
  • Video quality of service
Publications

Journal articles

  • Singh R, O'Farrell T, Biagi M, Penty RV & David JPR (2023) . Journal of Lightwave Technology, 41(17), 5577-5587.
  • Henthorn S, O'Farrell T, Anbiyaei MR & Ford KL (2023) . IEEE Transactions on Wireless Communications, 22(1), 550-562.
  • Henthorn S, Ford KL & O'Farrell T (2022) . IET Communications, 16(20), 2492-2500.
  • Bui T-C, Singh R, O'Farrell T, Scarano G, David JPR & Biagi M (2022) . Journal of Lightwave Technology, 40(22), 7254-7264.
  • Thompson JS, Fletcher S, Friderikos V, Gao Y, Hanzo L, Reza Nakhai M, O'Farrell T & Wells PD (2022) . IEEE Transactions on Green Communications and Networking, 6(2), 657-664.
  • Sholiyi AO & O’Farrell T (2022) . EURASIP Journal on Wireless Communications and Networking, 2022.
  • Bui T-C, Singh R, O'Farrell T & Biagi M (2021) . IEEE Transactions on Wireless Communications, 20(3), 1582-1595.
  • Alsabah MQ, Vehkapera M & O'Farrell T (2020) . IEEE Access, 8, 108731-108747.
  • Henthorn S, Ford K & O'Farrell T (2020) . IEEE Transactions on Antennas and Propagation, 68(1), 111-120.
  • Asif SM, Anbiyaei MR, Ford KL, O'Farrell T & Langley RJ (2019) . IEEE Access, 7, 183770-183782.
  • Dong X, Zheng F-C, Zhu X & O'Farrell T (2019) . IEEE Transactions on Vehicular Technology, 68(3), 2987-2999.
  • Singh R, O’Farrell T, Biagi M & David JPR (2018) . Physical Communication, 31, 160-168.
  • You Y, Ford KL, Rigelsford JM & O'Farrell T (2018) . IEEE Transactions on Vehicular Technology, 67(12), 11848-11857.
  • Bui T-C, Singh R, O'Farrell T & Biagi M (2018) . IEEE Photonics Technology Letters, 30(14), 1301-1304.
  • Bai Q, Singh R, Ford KL, O'Farrell T & Langley RJ (2017) . IEEE Transactions on Antennas and Propagation, 65(12), 6290-6297.
  • Sholiyi A, O'Farrell T, Alzubi OA & Alzubi JA (2017) . International Journal of Future Generation Communication and Networking, 10(8), 1-14.
  • Henthorn S, Ford KL & O'Farrell T (2017) . IEEE Antennas and Wireless Propagation Letters, 16, 2038-2041.
  • Oo MZ, Othman M & O'Farrell T (2016) . Journal of Communications and Networks, 18(2), 238-245.
  • Nie W, Zhong Y, Zheng F-C, Zhang W & O'Farrell T (2016) . IEEE Transactions on Vehicular Technology, 65(8), 6601-6613.
  • Sholiyi A, Alzubi JA, Alzubi OA, Almomani O & O'Farrell T (2015) . Indian Journal of Science and Technology, 8(23).
  • Murray T, Nettles M, Selmes N, Cathles LM, Burton JC, James TD, Edwards S, Martin I, O’Farrell T, Aspey R , Rutt I et al (2015) . Science, 349(6245), 305-308.
  • Murray T, Selmes N, James TD, Edwards S, Martin I, O'Farrell T, Aspey R, Rutt I, Nettles M & Baugé T (2015) . Journal of Geophysical Research F: Earth Surface.
  • Martin I, O'Farrell T, Aspey R, Edwards S, James T, Loskot P, Murray T, Rutt I, Selmes N & Bauge T (2014) . IEEE Sensors Journal, 14(11), 3926-3931.
  • Singh R, O'Farrell T & David JPR (2014) . Journal of Lightwave Technology, 32(14), 2582-2592.
  • O'Farrell T & Guo W (2013) . IEEE Journal on Selected Areas of Communications, 30(11), 1-10.
  • Baghersalimi G & O'Farrell T (2013) . Iet Communications, 7(10), 999-1007.
  • O'Farrell T & Guo W (2013) . IEEE Journal on Selected Areas of Communication, 31(5), 851-860.
  • Guo W & O'Farrell T (2012) . Journal of Communications, 7(SPL.ISS. 10), 716-725.
  • Zheng FC, Correia L, Jay Guo Y, O'Farrell T & Madan R (2012) . Journal of Communications, 7(SPL.ISS. 10), 713-715.
  • Turyagyenda C, O'Farrell T & Guo W (2012) . Iet Communications, 6(14), 2239-2249.
  • Wang S, Guo W & O'Farrell T (2012) . EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING.
  • MacKenzie R & O'Farrell T (2012) . Iet Communications, 6(7), 740-750.
  • Hamdoun H, Loskot P, O'Farrell T & He J (2012) Survey and applications of standardized energy metrics to mobile networks. Annales des Telecommunications/Annals of Telecommunications, 1-11.
  • Guo W, Wang S & O'Farrell T (2012) Environmental and economically sustainable cellular networks. Journal of Green Engineering, 2(3), 273-283.
  • Guo W, Rigelsford JM, Ford KL & O'Farrell T (2012) . Progress in Electromagnetics Research C, 31, 153-168.
  • He J, Tang Z, O'Farrell T & Chen TM (2011) . Wireless Communications and Mobile Computing, 11(7), 980-990.
  • MacKenzie R & O'Farrell T (2010) . IEEE T COMMUN, 58(10), 2881-2891.
  • O'Farrell T (2008) . IET COMMUN, 2(1), 35-44.
  • O'Farrell T (2005) . ELECTRON LETT, 41(5), 257-259.
  • O'Farrell T & Omiyi P (2005) . IEEE T WIREL COMMUN, 4(2), 743-756.
  • O'Farrell T & Wong KK (2004) . ELECTRON LETT, 40(4), 257-259.
  • Wong KK & O'Farrell T (2003) . IEE P-OPTOELECTRON, 150(5), 453-464.
  • Wong KK & O'Farrell T (2003) Spread spectrum techniques for indoor wireless IR communications. IEEE WIREL COMMUN, 10(2), 54-63.
  • Donelan H & O'Farrell T (2002) . ELECTRON LETT, 38(25), 1660-1661.
  • Aguado LE, O'Farrell T & Harris JW (2000) Evaluation of impact of mixed traffic on UTRA performance. ELECTRON LETT, 36(22), 1876-1877.
  • Wong KK, O'Farrell T & Kiatweerasakul M (2000) Infrared wireless communication using spread spectrum techniques. IEE P-OPTOELECTRON, 147(4), 308-314.
  • Wong KK, O'Farrell T & Kiatweerasakul M (2000) The performance of optical wireless OOK, 2-PPM and spread spectrum under the effects of multipath dispersion and artificial light interference. INT J COMMUN SYST, 13(7-8), 551-576.
  • Donelan H & O'Farrell T (1999) A new method for generating sets of orthogonal sequences for a synchronous CDMA system. CRYPTOGRAPHY AND CODING, 1746, 56-62.
  • Donelan H & O'Farrell T (1999) Method for generating sets of orthogonal sequences. ELECTRON LETT, 35(18), 1537-1538.
  • Al-Dabbagh A, O'Farrell T & Darnell M (1998) Optical signal design using reciprocal periodic sequences. ELECTRON LETT, 34(20), 1962-1964.
  • Omiyi PE & O'Farrell T (1998) Throughput analysis of novel CDMA-based MAC protocol for wireless LANs. ELECTRON LETT, 34(12), 1201-1202.
  • Dring D & O'Farrell T (1997) . Engineering Science and Education Journal, 6(4), 167-170.
  • Larrea-Arrieta J, O'Farrell T & Tait DJ (1996) . Electronics Letters, 32(3), 161-162.
  • O'Farrell T & Lochmann SI (1995) . Electronics Letters, 31(11), 905-906.
  • O'Farrell T, Nam LH & Senior JM (1994) . Electronics Letters, 30(22), 1872-1874.
  • O'Farrell T & Lochmann S (1994) . Electronics Letters, 30(1), 63-65.
  • O'Farrell T (1993) . Electronics Letters, 29(20), 1782-1783.
  • Jirattitichareon A & O'Farrell T (1993) . Electronics Letters, 29(13), 1204-1206.
  • Rhyne T, Bolstad M, Rheingans P, Petterson L & Shackelford W (1993) . IEEE Computer Graphics and Applications, 13(2), 34-38.
  • O’Farrell T (1991) . Electronics Letters, 27(4), 371-373.
  • O'Farrell T & Beale M (1989) . SPIE Proceedings, 1120, 12-12.

Book chapters

  • Fu H & O’Farrell T (2024) , Encyclopedia of Sustainable Technologies (pp. 826-838). Elsevier
  • Fu H & O’Farrell T (2024) , Encyclopedia of Sustainable Technologies Second Edition Volumes 1 4 (pp. V3-838).
  • Arbi A, O'Farrell T, Zheng F-C & Fletcher SC (2017) , Advances in Wireless Technologies and Telecommunication (pp. 1-28). IGI Global
  • Thompson JS, Grant PM, Fletcher S & O'Farrell T (2016) Minimising power consumption to achieve more efficient green cellular radio base station designs, Green Communications Theoretical Fundamentals Algorithms and Applications (pp. 555-578).
  • O'Farrell T & Fletcher S (2015) (pp. 19-42). Wiley

Conference proceedings

  • Ali M, Ball E, Joseph SD, O'Farrell T & Anbiyaei MR (2025) . 2025 IEEE International Mediterranean Conference on Communications and Networking (MeditCom) (pp 1-4). Nice, France, 7 July 2025 - 7 July 2025.
  • Anbiyaei MR, Snr TO, Ali M & Ball EA (2025) . 2025 IEEE International Conference on Communications Workshops (ICC Workshops) (pp 1031-1036), 8 June 2025 - 12 June 2025.
  • Anbiyaei MR, O'Farrell T, Ali M & Ball EA (2025) . 2025 IEEE Wireless Communications and Networking Conference (WCNC) (pp 1-3), 24 March 2025 - 27 March 2025.
  • Anbiyaei MR, O'Farrell T, Ali M & Ball EA (2025) . 2025 IEEE Wireless Communications and Networking Conference (WCNC) (pp 1-6), 24 March 2025 - 27 March 2025.
  • Hao F, O'Farrell T, Loh F, Elbakoury H & Fletcher S (2024) . 2024 IEEE International Conference on Communications Workshops (ICC Workshops) (pp 976-981), 9 June 2024 - 13 June 2024.
  • Khan ZU, O’Farrell T & Ford KL (2023) . 2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) Proceedings (pp 1-5). Toronto, ON, Canada, 5 September 2023 - 5 September 2023.
  • Fu H & O'Farrell T (2023) . 2023 IEEE International Conference on Communications Workshops (ICC Workshops) (pp 849-854), 28 May 2023 - 1 June 2023.
  • Fu H & O'Farrell T (2022) . 2022 20th International Symposium on Modeling and Optimization in Mobile, Ad hoc, and Wireless Networks (WiOpt) (pp 351-356), 19 September 2022 - 23 September 2022.
  • Henthorn S, Akinsolu MO, Lee Ford K, Liu B & O'Farrell T (2022) . 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI) (pp 1888-1889), 10 July 2022 - 15 July 2022.
  • Fu H & O'Farrell T (2022) . 2022 IEEE 8th International Conference on Network Softwarization (NetSoft) (pp 55-60), 27 June 2022 - 1 July 2022.
  • Henthorn S, Mohammadkhani R, O'Farrell T & Ford KL (2022) . 2021 IEEE Global Communications Conference, GLOBECOM 2021 - Proceedings. Madrid, Spain, 7 December 2021 - 7 December 2021.
  • Henthorn S, O'Farrell T & Ford KL (2020) . 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications. London, UK, 31 August 2020 - 31 August 2020.
  • Ford KL, Henthorn S & O'Farrell T (2020) . Proceeding of 2020 14th European Conference on Antennas and Propagation (EuCAP). Copenhagen, Denmark, 15 March 2020 - 15 March 2020.
  • Henthorn S, O'Farrell T, Asif SM, Anbiyaei MR & Ford KL (2020) . 2020 2nd 6G Wireless Summit (6G SUMMIT). Levi, Finland, 17 March 2020 - 17 March 2020.
  • Asif SM, Naji A, Anbiyaei MR, Ford KL, O'Farrell T & Langley RJ (2019) Planar frequency-tunable quad-band antenna with independently controllable bands. Proceedings, 2019 IEEE International Symposium on Antennas and Propagation. Atlanta, Georgia, USA, 7 July 2019 - 7 July 2019.
  • Asif SM, Anbiyaei MR, Naji A, Ford KL, O'Farrell T & Langley RJ (2019) Tuning range enhancement of a frequency-agile tri-band slot antenna. Proceedings, 2019 IEEE International Symposium on Antennas and Propagation. Atlanta, Georgia, USA, 7 July 2019 - 7 July 2019.
  • Fu H & O'Farrell T (2018) . 2018 International Conference on Information and Communication Technology Convergence (ICTC), 17 October 2018 - 19 October 2018.
  • Bui T-C, Singh R, O'Farrell T & Biagi M (2018) . 2018 IEEE Globecom Workshops (GC Wkshps) (pp 1-6), 9 December 2018 - 13 December 2018.
  • Henthorn SD, Ford KL & O'Farrell T (2018) . Antennas & Propagation Conference (LAPC 2017), Loughborough. Loughborough, UK, 13 November 2017 - 13 November 2017.
  • Singh R, Pergoloni S, O'Farrell T, Scarano G, David J & Biagi M (2018) White Light Constrained Multi-Primary Modulation for Visible Light Communication. 2017 IEEE Globecom Workshops (GC Wkshps). Marina Bay Sands Expo and Convention Centre, Singapore, 4 December 2017 - 4 December 2017.
  • Rodriguez-Albarran SP, Asif SM, Ford KL, Langley RJ & O'Farrell T (2018) . Loughborough Antennas & Propagation Conference 2018 (LAPC 2018) (pp 6 (2 pp.)-6 (2 pp.))
  • Henthorn S, Ford KL & O'Farrell T (2018) . 12th European Conference on Antennas and Propagation (EuCAP 2018) (pp 746 (4 pp.)-746 (4 pp.))
  • Bai Q, Li L, Asif SM, Singh R, Ford KL, Langley RJ & O'Farrell T (2018) . 12th European Conference on Antennas and Propagation (EuCAP 2018) (pp 527 (3 pp.)-527 (3 pp.))
  • Singh R, Bai Q, O'Farrell T, Ford K & Langley R (2017) . 2017 IEEE 85th Vehicular Technology Conference (VTC Spring). Sydney, Australia, 4 June 2017 - 4 June 2017.
  • Henthorn S, Ford KL & O'Farrell T (2017) . 2017 11th European Conference on Antennas and Propagation (EUCAP) (pp 731-734). Paris, France, 19 March 2017 - 19 March 2017.
  • Singh R, Bai Q, O'Farrell T, Ford K & Langley R (2017) . Vehicular Technology Conference (VTC-Fall), 2016 IEEE 84th. Montreal, QC, Canada, 18 September 2016 - 18 September 2016.
  • Singh R, Bai Q, O'Farrell T, Ford KL & Langley RJ (2017) . Vehicular Technology Conference (VTC-Fall), 2017 IEEE 86th. Toronto, Canada, 24 September 2017 - 24 September 2017.
  • Henthorn S, Ford L & O'Farrell T (2017) . 5th Colloquium on Antennas, Wireless and Electromagnetics (CAWE 2017) (pp 7 (16 .)-7 (16 .))
  • Bai Q, Singh R, Ford K, Langley R & O'Farrell T (2017) . 2016 Loughborough Antennas & Propagation Conference (LAPC). Loughborough, UK, 14 November 2016 - 14 November 2016.
  • Singh R, O'Farrell T & David JPR (2015) . 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (pp 575-579), 30 August 2015 - 2 September 2015.
  • Abukharis S, MacKenzie R & O'Farrell T (2015) . 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (pp 1216-1220), 30 August 2015 - 2 September 2015.
  • Arbi A & O'Farrell T (2015) . 2015 IEEE International Conference on Communications (ICC) (pp 43-48), 8 June 2015 - 12 June 2015.
  • Arbi A & O'Farrell T (2015) . 2015 IEEE International Conference on Communication Workshop (ICCW) (pp 2806-2811), 8 June 2015 - 12 June 2015.
  • Jafari AH & O'Farrell T (2015) . 2015 IEEE 81st Vehicular Technology Conference (VTC Spring) (pp 1-5), 11 May 2015 - 14 May 2015.
  • Singh R, O'Farrell T & David JPR (2015) . 2015 IEEE 81st Vehicular Technology Conference (VTC Spring) (pp 1-5), 11 May 2015 - 14 May 2015.
  • You Y, Ford KL, Rigelsford JM & O'Farrell T (2014) . 2014 Loughborough Antennas and Propagation Conference (LAPC) (pp 169-172), 10 November 2014 - 11 November 2014.
  • You Y, Rigelsford JM, Ford KL & O'Farrell T (2014) . The 8th European Conference on Antennas and Propagation (EuCAP 2014) (pp 1889-1892), 6 April 2014 - 11 April 2014.
  • You Y, Rigelsford JM, Ford KL & O'Farrell T (2014) . 8th European Conference on Antennas and Propagation Eucap 2014 (pp 1889-1892)
  • Guo W, Wang S, O'Farrell T & Fletcher S (2013) . IEEE Vehicular Technology Conference
  • Zhao L, Zhao G & O'Farrell T (2013) . IEEE International Symposium on Personal Indoor and Mobile Radio Communications PIMRC (pp 2825-2829)
  • Guo W, Wang S, Wu Y, Rigelsford J, Chu X & O'Farrell T (2013) Spectral- and energy-efficient antenna tilting in a HetNet using reinforcement learning. Wireless Communications and Networking Conference (WCNC), 2013 IEEE (pp 767-772)
  • Singh R, O'Farrell T & David J (2013) Performance evaluation of IEEE 802.15.7 CSK physical layer. Globecom Workshops (GC Wkshps), 2013 IEEE
  • Wang S, Guo W & O'Farrell T (2012) . Proceedings of the 14th IEEE International Conference on High Performance Computing and Communications Hpcc 2012 9th IEEE International Conference on Embedded Software and Systems Icess 2012 (pp 740-747)
  • Rigelsford J, Guo W & O'Farrell T (2012) A robust wide-area wireless sensor network for GNSS monitoring of flowing glaciers. LAPC 2012 - 2012 Loughborough Antennas and Propagation Conference
  • Hamdoun H, Loskot P & O'Farrell T (2012) . 2012 7th International Icst Conference on Communications and Networking in China Chinacom 2012 Proceedings (pp 419-424)
  • Abukharis S & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Wang S, Guo W & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Guo W & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Guo W, Wang S, Turyagyenda C & O'Farrell T (2012) . 2012 1st IEEE International Conference on Communications in China Workshops Iccc 2012 (pp 79-84)
  • Rigelsford J, Guo W & O'Farrell T (2012) . 2012 Loughborough Antennas & Propagation Conference (LAPC) (pp 1-5), 12 November 2012 - 13 November 2012.
  • Wang S, Guo W & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Turyagyenda C, O'Farrell T & Guo W (2012) . IEEE Vehicular Technology Conference
  • Guo W & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Wang S, Turyagyenda C & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Guo W & O'Farrell T (2012) . IEEE Vehicular Technology Conference
  • Hamdoun H, Loskot P & O'Farrell T (2011) . 11th International Symposium on Communications and Information Technologies Iscit 2011 (pp 168-173)
  • Guo W, Turyagyenda C, Hamdoun H, Wang S, Loskot P & O'Farrell T (2011) Towards a low energy LTE cellular network: Architectures. European Signal Processing Conference (pp 879-883)
  • Guo W & O'Farrell T (2011) . 2011 Wireless Advanced Wiad 2011 (pp 42-47)
  • Abukharis S & O'farrell T (2011) . Iwcmc 2011 7th International Wireless Communications and Mobile Computing Conference (pp 2181-2185)
  • Turyagyenda C, O'Farrell T, He J & Loskot P (2011) . IEEE Vehicular Technology Conference
  • Hamdoun H, Loskot P, O'Farrell T & He J (2011) . IEEE Vehicular Technology Conference
  • Guo W, Turyagyenda C, Hamdoun H, Wang S, Loskot P & O Farrell T (2011) Towards a low energy LTE cellular network: Architectures. Proceedings of the 19th European Signal Processing Conference (pp 879-883)
  • Abukharis S, Mackenzie R & O'Farrell T (2011) . IEEE Vehicular Technology Conference
  • Badic B, O'Farrell T, Loskot P & He J (2010) Effect of the Base Station Antenna Beam Tilting on Energy Consumption in Cellular Networks. 2010 IEEE 72ND VEHICULAR TECHNOLOGY CONFERENCE FALL
  • He J, Loskot P, O'Farrell T, Friderikos V, Armour S & Thompson J (2010) . 2010 5th International Icst Conference on Communications and Networking in China Chinacom 2010
  • Badic B, Kabashi AH, Joyce RM & O'Farrell T (2009) A performance investigation of coded MC-CDM with the Chase detection algorithm.. PIMRC (pp 1732-1736)
  • Badic B, O'Farrell T, Loskot P & He J (2009) Energy Efficient Radio Access Architectures for Green Radio: Large versus Small Cell Size Deployment. 2009 IEEE 70TH VEHICULAR TECHNOLOGY CONFERENCE FALL, VOLS 1-4 (pp 80-84)
  • Sholiyi AO, Badic B, Joyce RM & O'Farrell T (2009) . Ngmast 2009 3rd International Conference on Next Generation Mobile Applications Services and Technologies (pp 204-208)
  • MacKenzie R, Hands D & O'Farrell T (2009) QoS of Video Delivered over 802.11e WLANs. 2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8 (pp 1246-1250)
  • MacKenzie R, Hands D & O'Farrell T (2009) An Evaluation of Quality of Service for H.264 over 802.11e WLANs. PV: 2009 17TH INTERNATIONAL PACKET VIDEO WORKSHOP (pp 28-37)
  • MacKenzie R, Hands D & O'Farrell T (2009) Video Quality Over 802.11e with a Multi-Rate 802.11g Physical Layer. BMSB: 2009 IEEE INTERNATIONAL SYMPOSIUM ON BROADBAND MULTIMEDIA SYSTEMS AND BROADCASTING, VOLS 1 AND 2 (pp 449-453)
  • MacKenzie R, Hands D & O'Farrell T (2009) Effectiveness of H.264 error resilience techniques in 802.11e WLANs.. WCNC (pp 2774-2779)
  • MacKenzie R, Hands D & O'Farrell T (2009) Packet handling strategies to improve video QoS over 802.11e WLANs.. PIMRC (pp 1173-1177)
  • Aziz UF, O'Farrell T & Waheed UA (2008) Performance Analysis of PDC-OCDMA System with APD Mismatch. WIRELESS NETWORKS, INFORMATION PROCESSING AND SYSTEMS, Vol. 20 (pp 306-313)
  • Kabashi AH & O'Farrell T (2008) Low Complexity CMC-CDM based Wireless LAN with Different Interleaving Approaches. 2008 IEEE 19TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (pp 2184-2188)
  • Wang C, Zhou Z, Unsworth PJ & O'Farrell T (2008) . Speedam 2008 International Symposium on Power Electronics Electrical Drives Automation and Motion (pp 1114-1119)
  • Abukharis S & O'Farrell T (2008) A novel strategy for data rate adaptation in IEEE 802.11g in the case of video streaming. 2008 INTERNATIONAL CONFERENCE ON COMPUTER AND COMMUNICATION ENGINEERING, VOLS 1-3 (pp 812-817)
  • MacKenzie R & O'Farrell T (2008) Throughput analysis of a p-persistent CSMA protocol with QoS differentiation for multiple traffic types. 2008 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, PROCEEDINGS, VOLS 1-13 (pp 3220-3224)
  • Wang C, Zhou Z, Unsworth PJ & O'Farrell T (2008) Sensorless Speed Measurement of Induction Machines Using Short Time Fourier Transformation. 2008 INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS, ELECTRICAL DRIVES, AUTOMATION AND MOTION, VOLS 1-3 (pp 1108-1113)
  • Aziz UF, O’Farrell T & Waheed UA (2008) (pp 306-313)
  • Baidas MW & O'Farrell T (2007) The performance of coded Non-Coherent M-ary Orthogonal Keying based OFDM systems in a frequency selective and fast time-varying channel. 2007 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-14 (pp 2930-2935)
  • Serrato JC & O'Farrell T (2006) Joint Demapping and Source Decoding for Multilevel Modulation. 2006 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2006), VOLS 1-4 (pp 2140-2144)
  • Awad AJ & O'Farrell T (2005) Performance evaluation of OFCDM and MC-DS-CDMA for the forward link in next generation mobile communication systems. IEEE International Symposium on Personal Indoor and Mobile Radio Communications PIMRC, Vol. 3 (pp 1910-1914)
  • Lee CH, Postoyalko V & O'Farrell T (2004) Enhanced performance of ROF link for cellular mobile systems using postdistortion compensation. 2004 IEEE 15TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-4, PROCEEDINGS (pp 2772-2776)
  • Trejo-Reyes E, Aziz M & O'Farrell T (2004) . IEE Conference Publication(503) (pp 674-677)
  • Abukharis S & O'Farrell T (2004) . IEE Conference Publication(503) (pp 579-583)
  • Wong KK & O'Farrell T (2003) Coverage of 802.11g WLANs in the presence of Bluetooth interference. PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003 (pp 2027-2031)
  • McVeigh MR, O'Farrell T & Omiyama PE (2003) Normalised-power based reservation in connection admission control for mixed services in 3rd generation radio access networks. PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003 (pp 622-626)
  • Trejo-Reyes E, McLernon D & O'Farrell T (2003) Stabilization of slotted ALOHA using a modified stochastic gradient algorithm. PIMRC 2003: 14TH IEEE 2003 INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS PROCEEDINGS, VOLS 1-3 2003 (pp 1375-1379)
  • Trejo-Reyes E, O'Farrell T & McLernon D (2002) The Random Early Detection concept applied to the W-CDMA UMTS medium access control. 13TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOL 1-5, PROCEEDINGS (pp 2044-2048)
  • Donelan H & O'Farrell T (2002) Large families of ternary sequences with aperiodic zero correlation zones for a MC-DS-CDMA system. 13TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOL 1-5, PROCEEDINGS (pp 2322-2326)
  • Omiyi PE (2002) . Third International Conference on 3G Mobile Communication Technologies, Vol. 2002 (pp 520-524)
  • Chin Hee Lee , Postoyalko & O'Farrell (2002) . International Topical Meeting on Microwave Photonics MWP-02 (pp 137-140), 8 November 2002 - 8 November 2002.
  • Wong KW & O'Farrell T (2002) Blind adaptive single user detection with adjustable step size for DS/CDMA communication over a Rayleigh fading mobile channel. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 180-184)
  • Trejo-Reyes E, O'Farrell T & McLernon D (2002) Stabilisation of the MAC function in the W-CDMA access interface. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 225-228)
  • Aguado LE, Wong KK & O'Farrell T (2002) Coexistence issues for 2.4 GHz OFDM WLANs. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 400-404)
  • Donelan H & O'Farrell T (2002) Zero correlation zone sequences for multi-carrier DS-CDMA systems. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 141-145)
  • Wong KK & O'Farrell T (2000) Biorthogonal direct-sequence spread spectrum system for infrared wireless communications. PIMRC 2000: 11TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1 AND 2, PROCEEDINGS (pp 933-938)
  • Omiyi PE, Aguado LE, O'Farrell T, Harris JW & Townend R (2000) Performance evaluation of mixing real-time and non-real-time services in UTRA. PIMRC 2000: 11TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1 AND 2, PROCEEDINGS (pp 1545-1549)
  • Wong KW & O'Farrell T (2000) Blind adaptive detection for asynchronous CDMA systems. PIMRC 2000: 11TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1 AND 2, PROCEEDINGS (pp 396-400)
  • Aguado LE, O'Farrell T & Harris JW (2000) Performance evaluation of multiple bit-rate traffic mixing on UTRA. FIRST INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(471) (pp 411-415)
  • Wong KK & O'Farrell T (2000) Performance analysis of M-ary orthogonal DS system for infrared wireless communications. 2000 IEEE SIXTH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS, PROCEEDINGS, VOL 1 AND 2 (pp 184-188)
  • Donelan H & O Farrell T (1999) A new method for generating sets of orthogonal sequences for a synchronous CDMA system. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), Vol. 1746 (pp 56-62)
  • Omiyi PE & O'Farrell T (1998) Throughput and delay analysis of a novel slotted CDMA MAC protocol for multimedia communication in wireless LANs. NINTH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-3 (pp 570-574)
  • O'Farrell T & Kiatweerasakul M (1998) Performance of a spread spectrum infrared transmission system under ambient light interference. NINTH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-3 (pp 703-707)
  • Patel NR & O'Farrell T (1998) Achieving MAI cancellation in an asynchronous DS/CDMA system by optimum single-user detection. NINTH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-3 (pp 900-904)
  • Patel NR & O'Farrell T (1998) MAI cancellation by Optimum Single-user detection for DS/CDMA systems using random binary codes. 1998 IEEE RADIO AND WIRELESS CONFERENCE PROCEEDINGS - RAWCON 98 (pp 177-180)
  • O'Farrell T & Kiatweerasakul M (1998) Broadband wireless access using optical spread spectrum techniques. BROADBAND ACCESS AND NETWORK MANAGEMENT - NOC '98 (pp 230-237)
  • Patel NR & O'Farrell T (1998) Optimum single-user detection for DS/CDMA systems achieving complete MAI cancellation. 1998 IEEE 5TH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS - PROCEEDINGS, VOLS 1-3 (pp 941-945)
  • Omiyi PE & O'Farrell T (1998) A new throughput analysis of a novel MAC protocol for CDMA-Based wireless LANs. 1998 IEEE RADIO AND WIRELESS CONFERENCE PROCEEDINGS - RAWCON 98 (pp 23-26)
  • Omiyi PE & O'Farrell T (1998) Throughput and delay analysis of a (quasi-) synchronous CDMA MAC protocol for broadband, wireless packet networks. 1998 IEEE 5TH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS - PROCEEDINGS, VOLS 1-3 (pp 277-281)
  • O'Farrell T & Kiatweerasakul M (1998) Wireless infrared transmission using direct sequence spread spectrum techniques. 1998 IEEE 5TH INTERNATIONAL SYMPOSIUM ON SPREAD SPECTRUM TECHNIQUES AND APPLICATIONS - PROCEEDINGS, VOLS 1-3 (pp 752-756)
  • O'Farrell T (1997) Optimum single-user detection in a radio based CDMA system. IEE Colloquium Digest(129) (pp 11/6)
  • O'Farrell T (1996) Optimum single-user detector for asynchronous DS-CDMA radio based systems. IEEE International Symposium on Spread Spectrum Techniques Applications, Vol. 3 (pp 1029-1033)
  • Md Nasimus S & O'Farrell T (1992) . [Proceedings] Singapore ICCS/ISITA `92 (pp 949-952 vol.2), 16 November 1992 - 20 November 1992.
  • Pham Manh Lam & O'Farrell T (1992) . [Proceedings] Singapore ICCS/ISITA `92 (pp 491-495 vol.2), 16 November 1992 - 20 November 1992.
  • O'Farrell T & Beale M (1989) Code-division multiple-access (CDMA) techniques in optical fibre LANs. IEE Conference Publication(300) (pp 111-115)
  • O'Farrell T & Cunningham MJ (1987) NOISE PROCESSES IN A DATA ACQUISITION SYSTEM FOR PYROELECTRIC LINEAR ARRAYS USED IN LOW RESOLUTION THERMAL IMAGERS.. IEE Colloquium Digest(1987 /17) (pp 5-10)
  • O'Farrell T & Cunningham MJ (1986) SIGNAL MULTIPLEXING SYSTEM FOR PYROELECTRIC LINEAR ARRAYS.. IEE Conference Publication(263) (pp 24-29)
  • Ali M, Ball EA, Joseph SD, O'Farrell T & Anbiyaei MR () Dual-mode E-band mixer for 6G mmWave front-ends: simple structure with reconfigurable PT/resistive operation for optimized gain and linearity. Proceedings of The 50th International Conference on Infrared, Millimeter, and Terahertz Waves. Espoo, Finland, 17 August 2025 - 17 August 2025.
  • O'Farrell T, Singh R, Bai Q, Ford KL, Langley R, Beach M, Arabi E, Gamlath C & Morris K () . 2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt). Paris, France, 15 May 2017 - 15 May 2017.
  • Wong KK & O'Farrell T () . 11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), Vol. 2 (pp 933-938)
  • O'Farrell T & Lochmann SI () . Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) (pp 584-587)
  • O'Farrell T () . IEEE Second International Symposium on Spread Spectrum Techniques and Applications (pp 27-29)

Datasets

  • Henthorn S, Ford K & O'Farrell T .
  • Henthorn S, Ford K & O'Farrell T .
  • Bai Q, Singh R, Ford K, O'Farrell T & Langley R .

Preprints

  • Singh R, O'Farrell T, Bui TC, Biagi M & David JPR (2019) , arXiv.
  • Jafari AH & O'Farrell T (2017) , arXiv.
  • Abukharis S, Alzubi JA, Alzubi OA, Alamri S & O'Farrell T (2016) , arXiv.
  • Sholiyi A, Alzubi JA, Alzubi OA, Almomani O & O'Farrell T (2016) , arXiv.
Professional activities and memberships
  • Fellow of the Royal Academy of Engineering
  • Director of CommNet
  • External Examiner at KCL
Research students
StudentDegreeStatusPrimary/Secondary
Abukharis S H SPhDGraduatedPrimary
Arbi A SPhDGraduatedPrimary
Singh RPhDGraduatedPrimary
Turyagyenda C PhDGraduatedPrimary
Wang SPhDGraduatedPrimary

Links

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