Winston W. L. Ho

Winston Ho face


I have been with the Institute for Infocomm Research (I2R), Singapore since 2008, working with Dr. Tony Q. S. Quek and Dr. Sun Sumei in the Modulation and Coding Department of I2R. My research interests are in convex optimization, compressed sensing, broadband and space-time communication algorithms, interference management and cooperation for advanced wireless networks. I obtained my doctorate degree in Electrical Engineering from the National University of Singapore (NUS), funded by the Agency for Science, Technology and Research (A*STAR), under the supervision of Professor Lye Kin Mun and Associate Professor Liang Ying Chang. Here is my CV.

I have been working with Professor Yonina C. Eldar's team in the Electrical Engineering Department of Technion since 2011, focusing on signal processing and analog compressed sensing (xampling) applications.

Research Interests

Cooperative Space-Time Communications

The demand for high speed wireless services has been rising tremendously in recent years. Consequently, this leads to the situation where interference becomes a key limiting factor, especially in cellular networks with high traffic. Cooperative communications is an attractive solution for improving data rates as well as managing interference. Space-time communications strategies allow base stations to cooperate and boost data traffic.

Biomedical Imaging, Compressed Sensing, Convex Optimization, and Signal Reconstruction

Convex optimization allows us to solve many real-world problems efficiently. Together with compressed sensing, the potential applications include biomedical imaging like tomography, ultrasound scanning and magnetic resonance imaging, and energy-critical scenarios like astronomical imaging, discreet communications and search/rescue operations.

Selected Publications


W. W. L. Ho, T. Q. S. Quek, S. Sun, and R. W. Heath Jr., “Decentralized precoding for multicell MIMO downlink,” IEEE Trans. Wireless Commun., vol. 10, no. 6, pp. 1798–1809, Jun. 2011.

W. W. L. Ho and Y.-C. Liang, “
Optimal resource allocation for multiuser MIMO-OFDM systems with user rate constraints,” IEEE Trans. Veh. Technol., vol. 58, no. 3, pp. 1190–1203, Mar. 2009.

S. Lin, W. W. L. Ho, and Y.-C. Liang, “
Block diagonal geometric mean decomposition (BD-GMD) for MIMO broadcast channels,” IEEE Trans. Wireless Commun., vol. 7, no. 7, pp. 2778–2789, Jul. 2008.


W. W. L. Ho, T. Q. S. Quek, and S. Sun, “Distributed precoding for network MIMO,” in Proc. IEEE Int. Conf. Commun., Cape Town, SOUTH AFRICA, May 2010, pp. 1–5. [Slides]

W. W. L. Ho, T. Q. S. Quek, and S. Sun, “Decentralized base station processing for multiuser MIMO downlink CoMP,” in Proc. IEEE Veh. Technol. Conf., Taipei, TAIWAN, May 2010, pp. 1–5. [Slides]

W. W. L. Ho and Y.-C. Liang, “Two-way relaying with multiple antennas using covariance feedback,” in Proc. IEEE Veh. Technol. Conf., Calgary, CANADA, Sep. 2008, pp. 1–5. [Slides]

W. W. L. Ho and Y.-C. Liang, “Efficient resource allocation for power minimization in MIMO-OFDM downlink,” in Proc. IEEE Veh. Technol. Conf., Calgary, CANADA, Sep. 2008, pp. 1–5. [Slides]

W. W. L. Ho and Y.-C. Liang, “User ordering and subchannel selection for power minimization in MIMO broadcast channels using BD-GMD,” in Proc. IEEE Veh. Technol. Conf., Calgary, CANADA, Sep. 2008, pp. 1–5. [Slides]

W. W. L. Ho and Y.-C. Liang, “Efficient power minimization for MIMO broadcast channels with BD-GMD,” in Proc. IEEE Int. Conf. Commun., Glasgow, SCOTLAND, Jun. 2007, pp. 2791–2796. [Slides]

S. Lin, W. W. L. Ho, and Y.-C. Liang, “MIMO broadcast communications using block-diagonal uniform channel decomposition (BD-UCD),” in Proc. IEEE Int. Symp. Personal, Indoor and Mobile Radio Commun., Helsinki, FINLAND, Sep. 2006, pp. 1–5. [Slides]

S. Lin, W. W. L. Ho, and Y.-C. Liang, “Block-diagonal geometric mean decomposition (BD-GMD) for multiuser MIMO broadcast channels,” in Proc. IEEE Int. Symp. Personal, Indoor and Mobile Radio Commun., Helsinki, FINLAND, Sep. 2006, pp. 1–5. [Slides]

Book Chapter

W. W. L. Ho, T. Q. S. Quek, and R. W. Heath, Jr., “Distributed Multicell Precoding for Network MIMO”, Cognitive Radio and Interference Management: Technology and Strategy, Edited by M.-L. Ku and J.-C. Lin, IGI Global, pp. 78–101, 2012.


[R2] Aug 2008, Multiuser MIMO Wireless Communications: Optimal and Efficient Schemes for Rate Maximization and Power Minimization. National University of Singapore doctoral thesis.

[R1] May 2004, Febrile Fits Monitor. National University of Singapore undergraduate thesis for honours year project.

Fellowships and Awards

The Award for Leading, Educating & Nurturing Talent (A*STAR TALENT Award) which recognizes project/laboratory teams which excel in providing good leadership and a conducive environment for nurturing young scientists. (Project team “Opportunistic Wireless Network Coding for Multiuser MIMO Communications” comprising of Dr Sun Sumei, Dr Winston Ho Wing Long, Dr Tan Peng Hui, Dr Tony Quek Quee Seng, Dr Ho Chin Keong, Dr Lokesh Bheema Thiagarajan, Dr Ubolthip Sethakaset, Dr Kiran Thimme Gowda, and Dr Peh Ho Huat.)

Agency for Science, Technology and Research Graduate Scholarship

NUS DEAN’S LIST 2002/2003 Semester 1

NUS DEAN’S LIST 2000/2001 Semester 1

    Past Work

    Orthogonal Frequency Division Multiplexing (OFDM)

    I did my undergraduate degree in Electrical Engineering at the National University of Singapore (NUS), 2000-2004. In 2003, I was an intern during my industrial attachment at the Institute for Communications Research (ICR), which subsequently became known as I2R. I worked in the cool-shaped building called Teletech Park, located in the Singapore Science Park II. My supervisor was Mr. Ashok Kumar Marath, who is a great tutor. I learnt many things about communications systems, as well as the orthogonal frequency division multiplexing (OFDM), for which I was working on synchronization issues. The interesting work and my friendly colleagues reinforced my decision that wireless communications is the area that I wish to focus on.

    Febrile Fits Monitor

    In my honours year, I did my final year project under the supervision of Professor Ko Chi Chung. It was a self-proposed project, called the febrile fits monitor. I had learnt from my father, who is a medical doctor, that children below the age of five are very prone to febrile fits. This is a condition that results when a fever goes untreated. If prompt action is not taken, the child is likely to suffer brain damage. I challenged myself to design and develop a working prototype of a febrile fits monitor, a device that the child could wear, which alerts the guardian of a fever and imminent febrile fits. Treatment such as sponging for temperature reduction can then be performed. Professor Ko is a friendly and knowledgeable supervisor, who gave me guidance as well as freedom to explore various strategies. I eventually produced a working prototype that could monitor a child's armpit temperature and transmit the information wirelessly to a PC, which would then constantly update an internet server. It could also alert the parents or guardians of the child should the child's temperature rise above a certain threshold. See [R1].

    Space-time wireless communications

    In 2004, I commenced my doctoral studies in NUS, under a scholarship from the Agency for Science, Technology and Research (A*STAR). My thesis focused on space-time wireless communications, also known as multiple-input multiple-output (MIMO) (not Nemo!) wireless communications. My supervisors were Professor Lye Kin Mun and Associate Professor Liang Ying Chang, who offered me great advice. Associate Professor Samir Attallah, who was in my thesis advisory committee (TAC), also offered helpful advice. I am really indepted to them, because they taught me useful research skills that would help me throughout my four years of doctoral studies, as well as later in life. They were patient in sharing with me their great knowledge and experience, through the frequent meetings and discussions. At the same time, they gave me the freedom to pursue the research of my interest. Eventually, I completed my thesis on  “Multiuser MIMO Wireless Communications: Optimal and Efficient Schemes for Rate Maximization and Power Minimization”. See [R2]. These four years were a very satisfying, albeit challenging, period of my life. I made several good friends inside and outside of NUS, NUS Graduate School (NGS), I2R, and A*STAR Graduate Academy, including Lin Shaowei, Yeo Sze Ling, Derek Leong, Trina Kok, Chia Meng Wah, Nai Siew Eng, Edward Peh, Pei Yiyang, Mar Choong Hock, Fiona Chua, Desmond Kow, Kelly Lee, Pham The Hanh, Geng Lijuan, Terry Lam, Suriyani Lukman, Helmi KurniawanBaek Joonsang, Martin Zimmermann, Vijay Chandrasekhar, Ruben de Francisco, and and Lokesh Thiagarajan. I also thoroughly enjoyed my holiday in Bintan with friends from NGS in March 2006. I also got to visit fantastic places like Scotland and Finland when I went to present at the various conferences.

    Service to the International Community

    I have served as a reviewer for the following publications: IEEE Transactions on Communications, IEEE Transactions on Vehicular Technology, IEEE Signal Processing Letters, EURASIP Journal on Advances in Signal Processing, EURASIP Journal on Wireless Communications and Networking, Elsevier PHYCOM: Physical Communication Journal, International Conference on Communications (ICC), IEEE Global Communications Conference (Globecom), Personal, Indoor and Mobile Radio Communications Symposium (PIMRC), European Wireless, Wireless Communications & Networking Conference (WCNC), IEEE Vehicular Technology Conference (VTC), IEEE Asia Pacific Wireless Communications Symposium (APWCS), International Symposium on Wireless and Pervasive Computing (ISWPC), IEEE Mobile WiMAX Symposium (MWS), International ICST Conference on Cognitive Radio Oriented Wireless Networks (CrownCom). I had been the Secretary of the IEEE VTS Singapore Chapter from 2009 to 2010. I organized the IEEE International Conference on Communication Systems (ICCS) 2010 which was held successfully in November 2010.

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    External Links

    Optimism - The Source

    Disclaimer: I am personally responsible for any content and opinion posted on this homepage. The Institute for Infocomm Research is not responsible for any contents found on this homepage or any opinion expressed herein.