Adaptive Cooperation Switching for Multicell Downlink Using Statistical CSI
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概要
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This letter proposes an adaptive scheme that switches between cooperative and non-cooperative transmission for multicell downlink systems in Kronecker spatially correlated channels, which exploits statistical channel state information (CSI). Based on the received signal-to-noise ratios (SNRs) and a cooperation metric, we propose a simple base station (BS) association method and then derive low-SNR capacity approximations for both cooperative and non-cooperative systems. Using the results, we provide a low-complexity efficient cooperation switching method to enhance the system capacity. Results show that the proposed method is more efficient than the conventional method to search the switching point.
著者
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Gao Xiqi
National Mobile Commun. Research Lab. Southeast University
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ZHANG Jun
National Institute of Diagnostics and Vaccine Development in infectious disease, The Key Laboratory
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Wong Kai-kit
Department Of Electronic And Electrical Engineering University College London
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Jin Shi
National Mobile Communications Research Laboratory Southeast University
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ZHANG Jun
National Mobile Communications Research Laboratory, Southeast University
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