Prof. Tat M. Lok

駱 達 明

Associate Professor

BSc (CUHK), MSEE, PhD (Purdue)

SMIEEE

Tel: (852) 3943-8455

Fax: (852) 2603-5032

Email: t m l o k @ i e . c u h k . e d u . h k

http://personal.ie.cuhk.edu.hk/~tmlok/

I am looking for students interested in pursuing a Ph. D. degree. A research assistant position is also available in the general area of wireless communications. Interested candidates should send their CVs to me.

Biography

Tat M. Lok received the BSc degree in electronic engineering from the Chinese University of Hong Kong, and the MSEE degree and the PhD degree in electrical engineering from Purdue University. He was a post-doctoral research associate at Purdue University.

He then joined the Chinese University of Hong Kong, where he is currently an associate professor. His research interests include communication theory, communication networks, signal processing for communications and wireless systems. He has served on TPCs of many international conferences including IEEE ICC, VTC, Globecom, WCNC, ISIT, and etc. He has also served on the editorial boards of several international journals including the IEEE Transactions on Vehicular Technology (2002-2008) and the IEEE Transactions on Wireless Communications (2015-2018).

Research Interests

	Wireless Communications
	Communication Theory
	Signal Processing for Communications

Courses

	Digital Communications
	Signals and Systems
	Principles of Communication Systems
	Wireless Communications

Recent Projects

	Network coded interference alignment
	Power control strategies for cooperative wireless systems
	Design of wireless cooperation via flow calculus
	Optimal assignment of resources for multiuser communication systems

Selected Publications

	Recent journal papers:
	Zezu Liang, Yuan Liu, Tat-Ming Lok, and Kaibin Huang, “Multi-Cell Mobile Edge Computing: Joint Service Migration and Resource Allocation, IEEE Transactions on Wireless Communications, vol.20, issue 9, pp.5898-5912, Sep. 2021. T. T. Chan and T. M. Lok, “Utilizing Interference by Network Coding for Simultaneous Wireless Information and Power Transfer,” IEEE Wireless Communications Letters, vol. 10, issue 6, pp.1394-1353, Jun. 2021. T. T. Chan and T. M. Lok, "Signal-aligned Network Coding for Multicell Processing with Limited Cooperation," IEEE Transactions on Communications, vol. 68, no. 8, August 2020.
	Zezu Liang, Yuan Liu, Tat-Ming Lok, and Kaibin Huang, “Multiuser Computation Offloading and Downloading for Edge Computing with Virtualization,” IEEE Transactions on Wireless Communications, vol. 18, issue 9, Sep. 2019.
	Yi Wei, Junlin Yu, Tat M. Lok, and Lin Gao, “A Novel Mobile Data Contract Design with Time Flexibility,” IEEE Trans. On Mobile Computing, vol. 18, no. 5, pp. 986-999, May 2019.
	Y. Wei and T. M. Lok, “An Iterative Interference Alignment Algorithm for the General MIMO X Channel,” IEEE Transactions on Wireless Communications, vol.18, no.3, March 2019.
	Mengjie Xie, T. M. Lok, and Q. Yang, "User Association and Scheduling Based on Auction in Multi-cell MU-MIMO Systems," IEEE Transactions on Wireless Communications, vol. 17, no. 6, June 2018.
	Mengjie Xie and T. M. Lok, “SINR Balancing via Base Station Association, Beamforming and Power Control in Downlink Multicell MISO Systems," IEEE Transactions on Wireless Communications, vol. 17, no. 3, March 2018.
	R. Hu and T. M. Lok, “Pareto Optimality for the Single-Stream Transmission in Multiuser Relay Networks,” IEEE Trans. on Wireless Commun., Oct. 2017.
	M. Xie, and T.M.Lok, “Antenna Selection in RF-Chain Limited MIMO Interference Networks under Interference Alignment,” IEEE Trans. Veh. Tech., May 2017.
	R. Hu, and T. M. Lok, “Towards Pareto Optimality in Multiuser Relay Networks,” IEEE Trans. Veh. Tech., Jan. 2017.
	Y. Wei and T. M. Lok, “Interference alignment and power allocation for the MIMO X channels with multiple layers of relays,” EURASIP Journal on Wireless Communications and Networking, Sep. 2016.
	S. Shen, X. Lin and T. M. Lok, “Dynamic Spectrum Leasing under Uncertainty: Modeling, Analysis and Algorithms,” IEEE Trans. Veh. Tech., Nov. 2015.
	S. Shen and T. M. Lok, “Asynchronous Distributed Downlink Beamforming and Power Control in Multi-Cell Networks,” IEEE Trans. on Wireless Commun., Jul. 2014.
	S. Shen and T. M. Lok, “Dynamic Power Allocation for Downlink Interference Management in a Two-Tier OFDMA Network,” IEEE Trans. Veh. Tech., Oct. 2013.
	K. Zhou and T. M. Lok, “Resource allocation for secondary users with chance constraints based on primary links control feedback information,” EURASIP Journal on Wireless Communications and Networking, Nov. 2012.
	H. Fang, X. Lin and T. M. Lok, “Power Allocation for Multiuser Cooperative Communication Networks under Relay Selection Degree Bounds,” IEEE Trans. Veh. Tech., Sep. 2012.
	X. Lin and T. M. Lok, “Distributed Power Control for One-to-Many Transmissions in Gaussian Interference Channels,” IEEE Trans. Commun., Aug. 2012.
	C. Y. Ng and T. M. Lok, “Grouping Algorithm for Partner Selection in Cooperative Transmission,” Wireless Personal Communications, Sep. 2011.
	K. Zhou and T. M. Lok, “Power Control for Uplink Transmission with Mobile Users,” IEEE Trans. Veh. Tech., Jun. 2011.
	X. Lin and T. M. Lok, “Distributed Wireless Information Flow Allocation in Multiple Access Networks,” EURASIP Journal on Wireless Communications and Networking, Jun. 2011.
	C. Y. Ng, Kenneth W. Shum, C. W. Sung, and T. M. Lok, “A Layered Decomposition Framework for Resource Allocation in Multiuser Communications,” IEEE Trans. Veh. Tech., Feb. 2011.
	Cho Yiu Ng, Kenneth W. Shum, Chi Wan Sung, and Tat M. Lok, “Rate Allocation for Cooperative Orthogonal-Division Channels with Dirty-Paper Coding,” IEEE Trans. on Communications, Oct. 2010.
	D. Chatterjee, T. F. Wong, and T. M. Lok, "Cooperative transmission in a wireless relay network based on flow management," IEEE Transactions on Communications, Oct. 2010.
	Cho Yiu Ng, Tat Ming Lok, Tan F. Wong, “Pricing Games for Distributed Cooperative Transmission,” IEEE Trans. Veh. Tech., Sep. 2010.
	Recent conference papers:
	Z. Liang, Y. Liu, T. M. Lok, and K. Huang, “Service Migration for Multi-Cell Mobile Edge Computing,” IEEE Global Communications Conference, 2020. Y. Tang, M. H. Cheung, and T. M. Lok, “Trajectory Design for UAV Assisted Wireless Networks,” IEEE Global Communications Conference, 9-13 December 2019, Waikoloa, HI, USA.
	Z. Liang, Y. Liu, K. Huang, and T. M. Lok, “I/O Interference Aware Multiuser Computation Offloading for Virtualized Edge Computing,” IEEE ICC 2019, Shanghi, China.
	T. T. Chan, and T. M. Lok, “Reverse Signal-Aligned Network Coding in Interference Channels with Limited Transmitter Cooperation,” 2018 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC 2018), Qingdao, China, September 14-17, 2018.
	T. T. Chan, and T. M. Lok, “Signal-Aligned Network Coding in Interference Channels with Limited Receiver Cooperation,” accepted by 2018 IEEE/CIC International Conference on Communications in China (ICCC), Beijing, China, August 16-18, 2018.
	Yi Wei, Junlin Yu, Tat M. Lok and Lin Gao, “A Novel Mobile Data Plan Design from the Perspective of Data Period,” IEEE ICCS 2016, Shenzhen, China.
	T. T. Chan, and T. M. Lok, “Interference Alignment with Physical-Layer Network Coding in MIMO Relay Channels,” IEEE ICC 2016.
	Mengjie Xie and Tat M. Lok, “Access Point Selection and Auction-based Scheduling in Uplink MU-MIMO WLANs,” IEEE ICC 2016.
	Ruixue Hu and Tat M. Lok, “Power Splitting and Relay Optimization for Two-way Relay SWIPT Systems,” IEEE ICC 2016.
	Mengjie Xie and T. M. Lok, “Distributed Joint Transmitter-Receiver Beamforming and Power Allocation in MIMO Interference Channel with Interference Alignment,” IEEE VTC 2014 Fall, September 2014, Vancouver, Canada.
	WEI Yi and T. M. LOK, “Optimization of Interference Alignment in MIMO Channel with Multiple Layers of Relays,” IEEE VTC 2014 Fall, September 2014, Vancouver, Canada.
	HU Ruixue and T. M. LOK, “Distributed Power Control and Beamforming in Multiuser Relay Network,” IEEE VTC 2014 Fall, September 2014, Vancouver, Canada.
	S. Shen and T. M. Lok, “Downlink Beamforming and Power Control With Per-Antenna Power Constraints,” IEEE WCNC,, Apr. 2014, Istanbul, Turkey.
	S. Shen and T. M. Lok, “Power Control for Underlay In-band Spectrum Sharing in Device-to-Device Communications,” IEEE WCNC, Apr. 2014, Istanbul, Turkey.
	S. Shen, H. Fang and T. M. Lok, “Design of Downlink Beamformer for Real-time and Non-real-time Services,” IEEE WCNC, Apr. 2013, Shanghai, China.
	S. Shen, X. Lin and T. M. Lok, “Dynamic Spectrum Leasing under Uncertainty: a Stochastic Variational Inequality Approach,” IEEE WCNC, Apr. 2013, Shanghai, China.
	Kenan Zhou and Tat Ming Lok, “Joint Spectrum Sharing and Power Allocation for Secondary Users in Cognitive Radio Networks,” IEEE WCNC, Mar. 2011, Cancun, Mexico.
	Xingqin Lin, and Tat Ming Lok, “Relay Assignment in Multiuser Cooperative Radio Networks with QoS Guarantee,” IEEE WCNC, Mar. 2011, Cancun, Mexico.
	Cho Yiu Ng, and Tat Ming Lok, “Grouping Algorithm for Partner Selection in Cooperative Transmission,” the Second International Conference on Ubiquitous and Future Networks (ICUFN 2010), Jun 2010, Jeju, Korea.
	W. P. Tam, and T. M. Lok, “Joint Grouping and Scheduling in Complexity-Constrained Broadcasting Ad-Hoc Networks,” the Second International Conference on Ubiquitous and Future Networks (ICUFN 2010), Jun 2010, Jeju, Korea.
	K. L. Lam, W. P. Tam, and T. M. Lok, “A Cooperative Graph Approach for Cooperative Routing in Delay-Sensitive Systems,” IEEE 71st Vehicular Technology Conference: VTC2010-Spring, 16–19 May 2010, Taipei, Taiwan.
	Kenon Zhou and T. M. Lok, “Optimal Power Allocation for Relayed Transmission Through A Mobile Relay Node,” IEEE 71st Vehicular Technology Conference: VTC2010-Spring, 16–19 May 2010, Taipei, Taiwan.
	W. P. Tam and T. M. Lok, “Multi-Flow Transmission in Cellular Systems with Optimal Scheduling and Utility Maximization,” IEEE 71st Vehicular Technology Conference: VTC2010-Spring, 16–19 May 2010, Taipei, Taiwan.