Cooperative Non-Orthogonal Multiple Access with Virtual Full Duplex Relaying and Two-Way Relaying

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• Dr. Chee Yen (Bruce) Leow, Universiti Teknologi Malaysia
• Tuesday 02 July 2019, 14:30-15:30
• Room 611 (Gabor Seminar Room), Level 6, EEE Department.

If you have a question about this talk, please contact Kin K Leung.

Non-orthogonal multiple access (NOMA) is a promising multiple access technique for upcoming 5th Generation (5G) system to achieve high data rate, massive connectivity and low latency. Cooperative NOMA employs relays to further enhance spectral efficiency and reliability. Ideally, a full-duplex (FD) relay is preferable to a half-duplex (HD) relay in terms of spectral efficiency. However, the stringent self-interference suppression requirement increases the complexity of relay node while imperfect interference cancellation degrades the performance of FD relay. These motivate the use of HD relays-based techniques, namely virtual full duplex relaying and two-way relaying for cooperative NOMA systems. First, this talk presents the proposed cooperative NOMA schemes with VFD relaying, for the cases with dedicated infrastructure relays and user relays. Inter-relay interference management and NOMA power allocation policy will be discussed. Second, this talk presents the proposed cooperative NOMA schemes using two-way relaying to support bidirectional information exchange. Digital and analogue network coding techniques are introduced at the relay for both centralised and decentralised NOMA systems. The rate and reliability performance of the proposed schemes are analysed and compared with the existing FD and HD cooperative NOMA and OMA schemes to justify the superiority. This talk concludes with suggestions for future work. This talk is supported by H2020 -MSCA-RISE-2015 under grant number 690750.

Bio: Dr. Chee Yen (Bruce) Leow obtained the B.Eng. degree in Computer Engineering from Universiti Teknologi Malaysia (UTM) and the Ph.D. degree from Imperial College London in 2007 and 2011, respectively. Since July 2007, he has been an academic staff with the School of Electrical Engineering, Faculty of Engineering, UTM . He is currently an Associate Professor in the Faculty and a Research Fellow in the Wireless Communication Centre (WCC), Higher Institution Centre of Excellence, UTM and UTM -Ericsson Innovation Centre for 5G. His research interests include non-orthogonal multiple access, cooperative communication, UAV communication, MIMO , hybrid beamforming, physical layer security, wireless power transfer, and prototype development using software defined radio, for 5G and IoT applications. He is among the pioneers of 5G initiatives in Malaysia. He is currently the Secretary of Malaysia IMT and Future Networks Working Group and the Head of Technology Subgroup in Malaysia 5G Task Force.

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