Statistical-mechanical analysis of multiuser channel capacity with imperfect channel state information |
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Authors: | Wang Hui-Song and Zeng Gui-Hua |
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Institution: | The State Key Laboratory on Fiber-Optical Local Area
Networks and Advanced Optical Communication Systems,
Electronic Engineering Department, Shanghai Jiaotong University,
Shanghai 200030, China |
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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. |
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Keywords: | statistical mechanics channel capacity minimum mean square error channel estimation code
division multiple access(CDMA) |
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