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Chin. Phys. B, 2008, Vol. 17(12): 4451-4457    DOI: 10.1088/1674-1056/17/12/020
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Statistical-mechanical analysis of multiuser channel capacity with imperfect channel state information

Wang Hui-Song, Zeng Gui-Hua
The State Key Laboratory on Fiber-Optical Local Area Networks and Advanced Optical Communication Systems, Electronic Engineering Department, Shanghai Jiaotong University, Shanghai 200030, China
Abstract  In this paper, the effect of imperfect channel state information at the receiver, which is caused by noise and other interference, on the multi-access channel capacity is analysed through a statistical-mechanical approach. Replica analyses focus on analytically studying how the minimum mean square error (MMSE) channel estimation error appears in a multiuser channel capacity formula. And the relevant mathematical expressions are derived. At the same time, numerical simulation results are demonstrated to validate the Replica analyses. The simulation results show how the system parameters, such as channel estimation error, system load and signal-to-noise ratio, affect the channel capacity.
Keywords:  code division multiple access(CDMA)      channel capacity      minimum mean square error channel estimation      statistical mechanics     
Received:  20 September 2006      Published:  20 December 2008
PACS:  84.40.Ua (Telecommunications: signal transmission and processing; communication satellites)  
Fund: Project supported by the National Nature Science Foundation of China (Grant Nos 60773085 and 60801051).

Cite this article: 

Wang Hui-Song, Zeng Gui-Hua Statistical-mechanical analysis of multiuser channel capacity with imperfect channel state information 2008 Chin. Phys. B 17 4451

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