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- Yangfan Zhong, Fady Alajaji, L. Lorne Campbell
- IEEE Transactions on Information Theory
- 2006

We investigate the computation of Csisza/spl acute/r's bounds for the joint source-channel coding (JSCC) error exponent E/sub J/ of a communication system consisting of a discrete memoryless source and a discrete memoryless channel. We provide equivalent expressions for these bounds and derive explicit formulas for the rates where the bounds are attained.… (More)

- Yangfan Zhong, Fady Alajaji, L. Lorne Campbell
- IEEE Transactions on Information Theory
- 2007

We study the error exponent, E<sub>J</sub>, for reliably transmitting a discrete stationary ergodic Markov (SEM) source Q over a discrete channel W with additive SEM noise via a joint source-channel (JSC) code. We first establish an upper bound for E<sub>J</sub> in terms of the Renyi entropy rates of the source and noise processes. We next investigate the… (More)

- Yangfan Zhong, F. Alajaji, L. Lome Campbell
- 2007 IEEE International Symposium on Information…
- 2007

Consider transmitting two discrete memoryless correlated sources, consisting of a common and a private source, over a discrete memoryless multi-terminal channel with two transmitters and two receivers. At the transmitter side, the common source is observed by both encoders but the private source can only be accessed by one encoder. At the receiver side,… (More)

- Yangfan Zhong, F. Alajaji, L.L. Campbell
- 2006 IEEE International Symposium on Information…
- 2006

For a memoryless Gaussian source under the squared-error distortion fidelity criterion and a memoryless additive Gaussian noise channel with a quadratic power constraint at the channel input, upper and lower bounds for the joint source-channel coding excess distortion exponent (which is the exponent of the probability of excess distortion) are established.… (More)

- Y. Zhong
- 2011

We consider a flow-level model of a network operating under an α-fair bandwidth sharing policy (with α > 0) proposed by Roberts and Massoulié (2000). This is a probabilistic model that captures the long-term aspects of bandwidth sharing between users or flows in a communication network. We study the transient properties as well as the steady-state… (More)

— In this work, we introduce the notion of Laplacian-type class and derive a type covering lemma for the memoryless Laplacian source (MLS) under the magnitude-error distortion measure. We then present an application of the type covering lemma to the lossy coding of the MLS. We establish a simple analytical lower bound for the excess distortion exponent,… (More)

- Yangfan Zhong, F. Alajaji, L.L. Campbell
- Proceedings. International Symposium on…
- 2005

We establish an upper bound for the joint source-channel coding (JSCC) error exponent E<sub>J</sub>(Q, W) for a discrete stationary ergodic Markov (SEM) source Q and a discrete channel W with additive SEM noise. This bound, which is expressed in terms of the Renyi entropy rates of the source and noise processes, admits an identical form to Csiszar's… (More)

—We investigate the joint source–channel coding (JSCC) excess distortion exponent E J (the exponent of the probability of exceeding a prescribed distortion level) for some memo-ryless communication systems with continuous alphabets. We first establish upper and lower bounds for EJ for systems consisting of a memoryless Gaussian source under the… (More)

- Yangfan Zhong, Fady Alajaji, L. Lorne Campbell
- IEEE Transactions on Information Theory
- 2009

We study the transmission of two discrete memoryless correlated sources, consisting of a common and a private source, over a discrete memoryless multiterminal channel with two transmitters and two receivers. At the transmitter side, the common source is observed by both encoders but the private source can only be accessed by one encoder. At the receiver… (More)