Professor Tim O'Farrell
FREng, PhD, MSc, BSc
School of Electrical and Electronic Engineering
Chair in Wireless Communication
Communications Research Group
t.ofarrell@sheffield.ac.uk
+44 114 222 5193
+44 114 222 5193
Full contact details
Professor Tim O'Farrell
School of Electrical and Electronic Engineering
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
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- 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
- Vector Coding Optical Wireless Links. Journal of Lightwave Technology, 1-11.
- Optimized Multi-Primary Modulation for Visible Light Communication. Journal of Lightwave Technology, 40(22), 7254-7264.
- Editorial : A decade of Green Radio and the path to “Net Zero” : a United Kingdom perspective. IEEE Transactions on Green Communications and Networking, 6(2), 657-664.
- Irregular vector turbo codes with low complexity. EURASIP Journal on Wireless Communications and Networking, 2022.
- Concurrent Multiband Direct RF Sampling Receivers. IEEE Transactions on Wireless Communications, 1-1.
- Optical energy-constrained slot-amplitude modulation for dimmable VLC: suboptimal detection and performance evaluation. IEEE Transactions on Wireless Communications, 20(3), 1582-1595. View this article in WRRO
- Non-iterative downlink training sequence design based on sum rate maximization in FDD massive MIMO systems. IEEE Access, 8, 108731-108747. View this article in WRRO
- Direct antenna modulation for high-order phase shift keying. IEEE Transactions on Antennas and Propagation, 68(1), 111-120. View this article in WRRO
- Low-profile independently- and concurrently-tunable quad-band antenna for single chain sub-6GHz 5G new radio applications. IEEE Access, 7, 183770-183782. View this article in WRRO
- On the local delay and energy efficiency of clustered HetNets. IEEE Transactions on Vehicular Technology, 68(3), 2987-2999. View this article in WRRO
- Coded color shift keying with frequency domain equalization for low complexity energy efficient indoor visible light communications. Physical Communication, 31, 160-168.
- Systems analysis of a pattern reconfigurable antenna for capacity improvement of cell edge users in cellular networks. IEEE Transactions on Vehicular Technology, 67(12), 11848-11857. View this article in WRRO
- Energy-constrained slot-amplitude modulation with dimming support. IEEE Photonics Technology Letters, 30(14), 1301-1304. View this article in WRRO
- An Independently Tunable Tri-Band Antenna Design for Concurrent Multiband Single Chain Radio Receivers. IEEE Transactions on Antennas and Propagation, 65(12), 6290-6297.
- Performance Evaluation of Turbo Codes in High Speed Downlink Packet Access Using EXIT Charts. International Journal of Future Generation Communication and Networking, 10(8), 1-14.
- Bit error rate performance of quadrature modulation transmission using reconfigurable frequency selective surfaces. IEEE Antennas and Wireless Propagation Letters, 16, 2038-2041. View this article in WRRO
- A proxy acknowledgement mechanism for TCP variants in mobile ad hoc networks. Journal of Communications and Networks, 18(2), 238-245.
- HetNets with Random DTX Scheme: Local Delay and Energy Efficiency. IEEE Transactions on Vehicular Technology, 65(8), 6601-6613. View this article in WRRO
- Near capacity irregular turbo code. Indian Journal of Science and Technology, 8(23). View this article in WRRO
- Reverse glacier motion during iceberg calving and the cause of glacial earthquakes. Science, 349(6245), 305-308.
- Dynamics of glacier calving at the ungrounded margin of Helheim Glacier, southeast Greenland. Journal of Geophysical Research F: Earth Surface.
- A High-Resolution Sensor Network for Monitoring Glacier Dynamics. IEEE Sensors Journal, 14(11), 3926-3931.
- An enhanced color shift keying modulation scheme for high-speed wireless visible light communications. Journal of Lightwave Technology, 32(14), 2582-2592.
- Relay deployment in cellular networks: planning and optimisation. IEEE Journal on Selected Areas of Communications, 30(11), 1-10.
- Pilot-aided estimation and equalisation of a radio-over-fibre system in wideband code division multiple access. Iet Communications, 7(10), 999-1007.
- Dynamic Cell Expansion with Self-Organizing Cooperation. IEEE Journal on Selected Areas of Communication, 31(5), 851-860.
- Small-Net vs. Relays in a heterogeneous low energy LTE architecture. Journal of Communications, 7(SPL.ISS. 10), 716-725.
- Guest Editorial. Journal of Communications, 7(SPL.ISS. 10), 713-715.
- Energy efficient coordinated radio resource management: A two player sequential game modelling for the long-term evolution downlink. Iet Communications, 6(14), 2239-2249.
- Low energy indoor network: deployment optimisation. EURASIP JOURNAL ON WIRELESS COMMUNICATIONS AND NETWORKING.
- Achieving service differentiation in IEEE 802.11e enhanced distributed channel access systems. Iet Communications, 6(7), 740-750.
- Survey and applications of standardized energy metrics to mobile networks. Annales des Telecommunications/Annals of Telecommunications, 1-11.
- Environmental and economically sustainable cellular networks. Journal of Green Engineering, 2(3), 273-283.
- Dynamic basestation antenna design for low energy networks. Progress in Electromagnetics Research C, 31, 153-168.
- Performance analysis of DSRC priority mechanism for road safety applications in vehicular networks. Wireless Communications and Mobile Computing, 11(7), 980-990.
- Throughput and Delay Analysis for p-Persistent CSMA with Heterogeneous Traffic. IEEE T COMMUN, 58(10), 2881-2891.
- Design and evaluation of a high data rate optical wireless system for the diffuse indoor channel using barker spreading codes and RAKE reception. IET COMMUN, 2(1), 35-44.
- Distributed MAC protocol for delay QoS provisioning in 3GRANs. ELECTRON LETT, 41(5), 257-259.
- Low-complexity medium access control protocols for QoS support in third-generation radio access networks. IEEE T WIREL COMMUN, 4(2), 743-756.
- Complementary sequence inverse keying for indoor wireless infrared channels. ELECTRON LETT, 40(4), 257-259.
- Application of complementary sequences in indoor wireless infrared communications. IEE P-OPTOELECTRON, 150(5), 453-464.
- Spread spectrum techniques for indoor wireless IR communications. IEEE WIREL COMMUN, 10(2), 54-63.
- Families of ternary sequences with aperiodic zero correlation zones for MC-DS-CDMA. ELECTRON LETT, 38(25), 1660-1661.
- Evaluation of impact of mixed traffic on UTRA performance. ELECTRON LETT, 36(22), 1876-1877.
- Infrared wireless communication using spread spectrum techniques. IEE P-OPTOELECTRON, 147(4), 308-314.
- 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.
- A new method for generating sets of orthogonal sequences for a synchronous CDMA system. CRYPTOGRAPHY AND CODING, 1746, 56-62.
- Method for generating sets of orthogonal sequences. ELECTRON LETT, 35(18), 1537-1538.
- Optical signal design using reciprocal periodic sequences. ELECTRON LETT, 34(20), 1962-1964.
- Throughput analysis of novel CDMA-based MAC protocol for wireless LANs. ELECTRON LETT, 34(12), 1201-1202.
- Concordat: Towards better researchers. Engineering Science and Education Journal, 6(4), 167-170.
- Adaptive error control for broadcast DS/SSMA packetradio networks. Electronics Letters, 32(3), 161-162.
- Switched correlator receiver architecture foroptical CDMA networks with bipolar capacity. Electronics Letters, 31(11), 905-906.
- Channel sense spread spectrum with overload detection against FFDS: A delay/throughput comparison. Electronics Letters, 30(22), 1872-1874.
- Performance analysis of an optical correlator receiver for SIK DS-CDMA communication systems. Electronics Letters, 30(1), 63-65.
- Throughput analysis of a CDMA protocol with channel sensing and overload detection for fibre optic LANs. Electronics Letters, 29(20), 1782-1783.
- Analysis of DS/SSMA for indoor radio communication in a log-normal fading channel. Electronics Letters, 29(13), 1204-1206.
- Visualizing environmental data at the EPA. IEEE Computer Graphics and Applications, 13(2), 34-38.
- New Signature Code Sequence Design Techniques For Cdma Systems. Electronics Letters, 27(4), 371-373.
- Delay/Throughput Performance Analysis Of The Code-Division Multiple-Access (CDMA) Protocol In Optical Fibre Lans. SPIE Proceedings, 1120, 12-12.
- A system‐level performance evaluation of a reconfigurable filtenna in the presence of in‐ and out‐of‐band blockers. IET Communications.
Book chapters
- The Deployment of Sustainable 5G Networks, Encyclopedia of Sustainable Technologies Second Edition Volumes 1 4 (pp. V3-838).
- The Deployment of Sustainable 5G Networks, Reference Module in Earth Systems and Environmental Sciences Elsevier
- Toward Green Evolution of Cellular Networks by High Order Sectorisation and Small Cell Densification, Advances in Wireless Technologies and Telecommunication (pp. 1-28). IGI Global
- Minimising power consumption to achieve more efficient green cellular radio base station designs, Green Communications Theoretical Fundamentals Algorithms and Applications (pp. 555-578).
- Green Communication Concepts, Energy Metrics and Throughput Efficiency for Wireless Systems (pp. 19-42). Wiley
Conference proceedings
- An Energy-Efficient Concurrent Dual-Band Radio Unit for Neutral Host 5G Open RANs. 2025 IEEE International Conference on Communications Workshops (ICC Workshops) (pp 1031-1036), 8 June 2025 - 12 June 2025.
- Demonstration of a Concurrent Dual-Band Radio for Neutral Host 5G Base Stations. 2025 IEEE Wireless Communications and Networking Conference (WCNC) (pp 1-3), 24 March 2025 - 27 March 2025.
- Concurrent Dual-Band, Low-Power O-RAN Compliant Radio for 5G Neutral Host Base Stations. 2025 IEEE Wireless Communications and Networking Conference (WCNC) (pp 1-6), 24 March 2025 - 27 March 2025.
- Spectral and Energy Efficiency in 5G RANs with IAB Operating in Millimeter Wave Bands. 2024 IEEE International Conference on Communications Workshops (ICC Workshops) (pp 976-981), 9 June 2024 - 13 June 2024.
- Direct IF Sampling Receivers for 5G Millimeter-Wave Communications Systems. 2023 IEEE 34th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 5 September 2023 - 8 September 2023.
- Accurate Energy Efficiency Prediction in Sub-6GHz Radio Access Networks Based on Pathloss Modeling Using Kriging Methods. 2023 IEEE International Conference on Communications Workshops (ICC Workshops), 28 May 2023 - 1 June 2023.
- The Volume Spectral and Energy Efficiency of Ultra-Dense IoT Networks with Clustered Users. 2022 20th International Symposium on Modeling and Optimization in Mobile, Ad hoc, and Wireless Networks (WiOpt), 19 September 2022 - 23 September 2022.
- Machine Learning-Assisted Optimization of a Metasurface-Based Directly Modulating Antenna. 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (AP-S/URSI), 10 July 2022 - 15 July 2022.
- The Spectral and Energy Efficiency of Ultra-Dense IoT Networks. 2022 IEEE 8th International Conference on Network Softwarization (NetSoft), 27 June 2022 - 1 July 2022.
- The effect of ADC resolution on concurrent, multiband, direct RF sampling receivers. 2021 IEEE Global Communications Conference (GLOBECOM), 7 December 2021 - 11 December 2021.
- Metasurface Direct Antenna Modulators in non-Line of Sight Channels for the Internet of Things. 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, 31 August 2020 - 3 September 2020.
- Direct antenna modulator for m-QAM applications. Proceeding of 2020 14th European Conference on Antennas and Propagation (EuCAP). Copenhagen, Denmark, 15 March 2020 - 15 March 2020. View this article in WRRO
- Tri-band single chain radio receiver for concurrent radio. 2020 2nd 6G Wireless Summit (6G SUMMIT). Levi, Finland, 17 March 2020 - 17 March 2020. View this article in WRRO
- 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. View this article in WRRO
- 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. View this article in WRRO
- An Energy Efficiency Evaluation Framework for Radio Access Networks. 2018 International Conference on Information and Communication Technology Convergence (ICTC), 17 October 2018 - 19 October 2018.
- Performance Evaluation of Generalized Optical Spatial Modulation with Dimming Support. 2018 IEEE Globecom Workshops (GC Wkshps) (pp 1-6), 9 December 2018 - 13 December 2018.
- A low-loss reconfigurable frequency selective surface based antenna for direct antenna modulation. Antennas & Propagation Conference (LAPC 2017), Loughborough. Loughborough, UK, 13 November 2017 - 13 November 2017. View this article in WRRO
- 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. View this article in WRRO
- Multiband Tunable MIMO Antenna. Loughborough Antennas & Propagation Conference 2018 (LAPC 2018) (pp 6 (2 pp.)-6 (2 pp.))
- A low-complexity array of directly phase modulating antennas. 12th European Conference on Antennas and Propagation (EuCAP 2018) (pp 746 (4 pp.)-746 (4 pp.))
- 5G Reconfigurable Antennas. 12th European Conference on Antennas and Propagation (EuCAP 2018) (pp 527 (3 pp.)-527 (3 pp.))
- Concurrent, Tunable, Multi-band, Single Chain
Radio Receivers for 5G RANs
. 2017 IEEE 85th Vehicular Technology Conference (VTC Spring). Sydney, Australia, 4 June 2017 - 4 June 2017. View this article in WRRO
- Frequency Selective Surface Loaded Antenna for Direct Antenna Modulation. 2017 11th European Conference on Antennas and Propagation (EUCAP) (pp 731-734). Paris, France, 19 March 2017 - 19 March 2017. View this article in WRRO
- Demonstration of RF Digitising Concurrent Dual-Band Receiver for Carrier Aggregation over TV White Spaces. Vehicular Technology Conference (VTC-Fall), 2016 IEEE 84th. Montreal, QC, Canada, 18 September 2016 - 18 September 2016. View this article in WRRO
- Concurrent, Multi-band, Single-Chain Radio Receiver for High Data-Rate HetNets. Vehicular Technology Conference (VTC-Fall), 2017 IEEE 86th. Toronto, Canada, 24 September 2017 - 24 September 2017. View this article in WRRO
- Direct Antenna Modulation with Frequency Selective Surfaces. 5th Colloquium on Antennas, Wireless and Electromagnetics (CAWE 2017) (pp 7 (16 .)-7 (16 .))
- Tuneable Dual-band Antenna for Sub 1 GHz Cellular Mobile Radio Applications. 2016 Loughborough Antennas & Propagation Conference (LAPC). Loughborough, UK, 14 November 2016 - 14 November 2016. View this article in WRRO
- Analysis of forward error correction schemes for colour shift keying modulation. 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (pp 575-579), 30 August 2015 - 2 September 2015.
- Non-saturated throughput analysis for a QoS differentiated p-persistent CSMA protocol with the capture effect. 2015 IEEE 26th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC) (pp 1216-1220), 30 August 2015 - 2 September 2015.
- A comparative study of energy efficiency between MIMO and SISO based LTE RANs. 2015 IEEE International Conference on Communications (ICC) (pp 43-48), 8 June 2015 - 12 June 2015.
- Energy efficiency in 5G access networks: Small cell densification and high order sectorisation. 2015 IEEE International Conference on Communication Workshop (ICCW) (pp 2806-2811), 8 June 2015 - 12 June 2015.
- Performance Evaluation of Spatial Complementary Code Keying Modulation in MIMO Systems. 2015 IEEE 81st Vehicular Technology Conference (VTC Spring) (pp 1-5), 11 May 2015 - 14 May 2015.
- Higher Order Colour Shift Keying Modulation Formats for Visible Light Communications. 2015 IEEE 81st Vehicular Technology Conference (VTC Spring) (pp 1-5), 11 May 2015 - 14 May 2015.
- Analysis of the use of beam reconfigurable antennas in a homogeneous cellular network deployment. 2014 Loughborough Antennas and Propagation Conference (LAPC) (pp 169-172), 10 November 2014 - 11 November 2014.
- A dynamic basestation antenna with reconfigurable azimuth beamwidth. The 8th European Conference on Antennas and Propagation (EuCAP 2014), 6 April 2014 - 11 April 2014.
- A dynamic basestation antenna with reconfigurable azimuth beamwidth. 8th European Conference on Antennas and Propagation Eucap 2014 (pp 1889-1892)
- Energy consumption of 4G cellular networks: A london case study. IEEE Vehicular Technology Conference
- Efficiency metrics for wireless communications. IEEE International Symposium on Personal Indoor and Mobile Radio Communications PIMRC (pp 2825-2829)
- Spectral- and energy-efficient antenna tilting in a HetNet using reinforcement learning. Wireless Communications and Networking Conference (WCNC), 2013 IEEE (pp 767-772)
- Performance evaluation of IEEE 802.15.7 CSK physical layer. Globecom Workshops (GC Wkshps), 2013 IEEE
- Two-tier cellular networks with frequency selective surface. 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)
- A robust wide-area wireless sensor network for GNSS monitoring of flowing glaciers. LAPC 2012 - 2012 Loughborough Antennas and Propagation Conference
- Implementation trade-offs of fountain codes in LTE and LTE-A. 2012 7th International Icst Conference on Communications and Networking in China Chinacom 2012 Proceedings (pp 419-424)
- Throughput and delay analysis of a qos differentiated p-persistent CSMA protocol with multirate. IEEE Vehicular Technology Conference
- Optimising femtocell placement in an interference limited network: Theory and simulation. IEEE Vehicular Technology Conference
- Dynamic cell expansion: Traffic aware low energy cellular network. IEEE Vehicular Technology Conference
- Integrated cross-layer energy savings in a smart and flexible cellular network. 2012 1st IEEE International Conference on Communications in China Workshops Iccc 2012 (pp 79-84)
- A robust wide-area wireless sensor network for GNSS monitoring of flowing glaciers. 2012 Loughborough Antennas & Propagation Conference (LAPC), 12 November 2012 - 13 November 2012.
- Energy efficiency evaluation of SISO and MIMO between LTE-femtocells and 802.11n networks. IEEE Vehicular Technology Conference
- Long term evolution downlink packet scheduling using a novel proportional-fair-energy policy. IEEE Vehicular Technology Conference
- Capacity-energy-cost tradeoff in small cell networks. IEEE Vehicular Technology Conference
- Energy efficiency and spectral efficiency trade-off of a novel interference avoidance approach for LTE-femtocell networks. IEEE Vehicular Technology Conference
- Power-capacity-tradeoff for low energy interference limited cellular networks. IEEE Vehicular Technology Conference
- Scalability of two-way relay channel network coding in a relay enhanced LTE cell. 11th International Symposium on Communications and Information Technologies Iscit 2011 (pp 168-173)
- Towards a low energy LTE cellular network: Architectures. European Signal Processing Conference (pp 879-883)
- Green cellular network: Deployment solutions, sensitivity and tradeoffs. 2011 Wireless Advanced Wiad 2011 (pp 42-47)
- A new adaptive differentiated p-persistent CSMA protocol that reduces the effect of the transmission errors on the system throughput performance. Iwcmc 2011 7th International Wireless Communications and Mobile Computing Conference (pp 2181-2185)
- SFBC MIMO energy efficiency improvements of common packet schedulers for the long term evolution downlink. IEEE Vehicular Technology Conference
- Practical network coding for two way relay channels in LTE networks. IEEE Vehicular Technology Conference
- Towards a low energy LTE cellular network: Architectures. Proceedings of the 19th European Signal Processing Conference (pp 879-883)
- Throughput and delay analysis for a differentiated p-Persistent CSMA protocol with the capture effect. IEEE Vehicular Technology Conference
- Energy efficient architectures and techniques for green radio access networks. 2010 5th International Icst Conference on Communications and Networking in China Chinacom 2010
- Effect of the Base Station Antenna Beam Tilting on Energy Consumption in Cellular Networks. 2010 IEEE 72ND VEHICULAR TECHNOLOGY CONFERENCE FALL
- A performance investigation of coded MC-CDM with the Chase detection algorithm.. PIMRC (pp 1732-1736)
- Effectiveness of H.264 error resilience techniques in 802.11e WLANs.. WCNC (pp 2774-2779)
- Packet handling strategies to improve video QoS over 802.11e WLANs.. PIMRC (pp 1173-1177)
- 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)
- An Evaluation of Quality of Service for H.264 over 802.11e WLANs. PV: 2009 17TH INTERNATIONAL PACKET VIDEO WORKSHOP (pp 28-37)
- 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)
- QoS of Video Delivered over 802.11e WLANs. 2009 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-8 (pp 1246-1250)
- A characterisation of HSDPA capacity using EXIT chart techniques. NGMAST 2009 - 3rd International Conference on Next Generation Mobile Applications, Services and Technologies (pp 204-208)
- Performance Analysis of PDC-OCDMA System with APD Mismatch. WIRELESS NETWORKS, INFORMATION PROCESSING AND SYSTEMS, Vol. 20 (pp 306-313)
- Sensorless speed measurement of induction machines using short time fourier transformation. Speedam 2008 International Symposium on Power Electronics Electrical Drives Automation and Motion (pp 1114-1119)
- 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)
- 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)
- 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)
- Performance analysis of PDC-OCDMA system with APD mismatch. Communications in Computer and Information Science, Vol. 20 CCIS (pp 306-313)
- 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)
- 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)
- Joint Demapping and Source Decoding for Multilevel Modulation. 2006 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2006), VOLS 1-4 (pp 2140-2144)
- 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)
- 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)
- Utran radio resource management for MPEG4 video transmission using perceptual video quality methods. IEE Conference Publication(503) (pp 674-677)
- MPEG-2 video streaming over IEEE 802.11 gwlan in the presence of Bluetooth interference. IEE Conference Publication(503) (pp 579-583)
- 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)
- 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)
- 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)
- 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)
- 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)
- Maximising spectral-efficiency in 3rd generation radio-access-networks using low-complexity multiple-access-control protocols. Third International Conference on 3G Mobile Communication Technologies, Vol. 2002 (pp 520-524)
- Analysis and simulation of AM-AM/PM nonlinear distortion due to direct laser modulation in radio over fibre systems. International Topical Meeting on Microwave Photonics MWP-02 (pp 137-140), 8 November 2002 - 8 November 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)
- Stabilisation of the MAC function in the W-CDMA access interface. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 225-228)
- Coexistence issues for 2.4 GHz OFDM WLANs. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 400-404)
- Zero correlation zone sequences for multi-carrier DS-CDMA systems. THIRD INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(489) (pp 141-145)
- 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)
- 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)
- 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)
- Performance evaluation of multiple bit-rate traffic mixing on UTRA. FIRST INTERNATIONAL CONFERENCE ON 3G MOBILE COMMUNICATION TECHNOLOGIES(471) (pp 411-415)
- 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)
- 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)
- 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)
- 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)
- 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)
- 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)
- Broadband wireless access using optical spread spectrum techniques. BROADBAND ACCESS AND NETWORK MANAGEMENT - NOC '98 (pp 230-237)
- 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)
- 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)
- 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)
- 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)
- Optimum single-user detection in a radio based CDMA system. IEE Colloquium Digest(129) (pp 11/6)
- Optimum single-user detector for asynchronous DS-CDMA radio based systems. IEEE International Symposium on Spread Spectrum Techniques Applications, Vol. 3 (pp 1029-1033)
- The performance of an optimum digital matched filter detector using structured code sequences for CDMA applications. [Proceedings] Singapore ICCS/ISITA `92 (pp 949-952 vol.2), 16 November 1992 - 20 November 1992.
- Delay/throughput performance of CDMA embedded in a one-persistent channel sense and collision (overload) detection protocol. [Proceedings] Singapore ICCS/ISITA `92 (pp 491-495 vol.2), 16 November 1992 - 20 November 1992.
- Code-division multiple-access (CDMA) techniques in optical fibre LANs. IEE Conference Publication(300) (pp 111-115)
- 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)
- SIGNAL MULTIPLEXING SYSTEM FOR PYROELECTRIC LINEAR ARRAYS.. IEE Conference Publication(263) (pp 24-29)
- 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. View this article in WRRO
- Bridging 5G and 6G: A low-complexity dual-band mmWave down-converter mixer (28/73 GHz) for 6G. Proceedings of IEEE International Mediterranean Conference on Communications and Networking. Nice, France, 7 July 2025 - 7 July 2025. View this article in WRRO
- Tunable, Concurrent Multiband, Single Chain Radio Architecture for Low Energy 5G-RANs. 2017 15th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt). Paris, France, 15 May 2017 - 15 May 2017. View this article in WRRO
- Infrared wireless communications. 11th IEEE International Symposium on Personal Indoor and Mobile Radio Communications. PIMRC 2000. Proceedings (Cat. No.00TH8525), Vol. 2 (pp 933-938)
- Optical correlator receivers for SIK DS-CDMA communication systems. Proceedings of IEEE 3rd International Symposium on Spread Spectrum Techniques and Applications (ISSSTA'94) (pp 584-587)
- Throughput Analysis of a Slotted Cdma Scheme with One Persistent Carrier Sensing and Collision (overload) Detection. IEEE Second International Symposium on Spread Spectrum Techniques and Applications (pp 27-29)
Datasets
- Dataset for "Direct Antenna Modulation for high-order Phase Shift Keying" in IEEE Transactions on Antennas and Propagation.
- Data for LAPC2017 Conference Paper: A low-loss reconfigurable Frequency Selective Surface based antenna for Direct Antenna Modulation.
- An Independently Tunable Tri-band Antenna Design for Concurrent Multi-band Single Chain Radio Receivers.
Preprints
- Performance Evaluation of Frequency Domain Equalisation Based Colour
Shift Keying Modulation Schemes Over Diffuse Optical Wireless Channels, arXiv.
- Performance Evaluation of Spatial Complementary Code Keying Modulation in MIMO Systems, arXiv.
- Packet Error Rate Performance of IEEE802.11g under Bluetooth Interface, arXiv.
- Near Capacity Irregular Turbo Code, arXiv.
- Vector Coding Optical Wireless Links. Journal of Lightwave Technology, 1-11.
- Professional activities and memberships
-
- Fellow of the Royal Academy of Engineering
- Director of CommNet
- External Examiner at KCL
- Research students
Student Degree Status Primary/Secondary Abukharis S H S PhD Graduated Primary Arbi A S PhD Graduated Primary Singh R PhD Graduated Primary Turyagyenda C PhD Graduated Primary Wang S PhD Graduated Primary