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- Chi Wan Sung, Kin Kwong Leung
- IEEE Transactions on Information Theory
- 2005

Most power control algorithms that aim at hitting a signal-to-interference ratio (SIR) target fall within Yates' framework. However, for delay-tolerable applications, it is unnecessary to maintain the SIR at a certain level all the time. To maximize throughput, one should increase one's power when the interference level is low, and the information… (More)

- Kin Kwong Leung, Chi Wan Sung
- IEEE/ACM Transactions on Networking
- 2006

We propose an opportunistic power control algorithm, which exploits channel fluctuation in order to maximize system throughput. The basic idea is that it instructs a transmitter to increase its power when the channel is good and to decrease its power when the channel is bad. The transmission rate is adjusted according to the received signal-to-interference… (More)

- Chi Wan Sung, Kin Kwong Leung
- IEEE Transactions on Information Theory
- 2003

We consider the sequence adaptation problem for cellular asynchronous code-division multiple-access (CDMA) systems. A game-theoretic approach is used to investigate the stability issues of distributed adaptation algorithms. It is shown that the Nash equilibrium may not exist for cellular CDMA systems if the traditional interference measure is used. In turn… (More)

- Chi Wan Sung, Xueqing Gong
- 2013 IEEE International Symposium on Information…
- 2013

A code is said to have the MDS property if it maps K source blocks into N coded blocks, while any K out of the N coded blocks allow recovery of the original K source blocks. A new vector code that has the MDS property is designed. It allows the source blocks to be recovered by using a fast algorithm called ZigZag decoding. It can serve as the Fractional… (More)

- Kenneth W. Shum, Kin Kwong Leung, Chi Wan Sung
- IEEE Journal on Selected Areas in Communications
- 2007

— Iterative waterfilling power allocation algorithm for Gaussian interference channels is investigated. The system is formulated as a non-cooperative game. Based on the measured interference powers, the users maximize their own throughput by iteratively adjusting their power allocations. The Nash equilibrium in this game is a fixed point of such iterative… (More)

- Chi Wan Sung, Ho Yuet Kwan
- PIMRC
- 2002

— For a given set of background interference signals, it is well known that the optimal sequence can be obtained by solving an eigenvalue problem. However, one usual practical constraint on the sequences in that the sequence elements should have a constant amplitude. We show that when the choice is limited to binary sequences, the sequence assignment… (More)

- Chi Wan Sung, Wing Shing Wong
- IEEE Trans. Wireless Communications
- 2003

—The authors consider a multirate code-division multiple acess system, in which all users have the same chip rate and vary their data rate by adjusting the processing gain. The receivers are assumed to be implemented using conventional matched filters, whose performance is sensitive to the received power levels. The au-thors' goal is to maximize the total… (More)

- Cho Yiu Ng, Chi Wan Sung
- IEEE Trans. Wireless Communications
- 2008

- Chi Wan Sung
- IEEE Communications Letters
- 2002

- Chi Wan Sung
- IEEE Trans. Wireless Communications
- 2003