Practical Power Allocation for Cooperative Distributed Antenna Systems
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概要
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In this letter, we address the problem of downlink power allocation for the generalized distributed antenna system (DAS) with cooperative clusters. Considering practical applications, we assume that only the large-scale channel state information is available at the transmitter. The power allocation scheme is investigated with the target of ergodic achievable sum rate maximization. Based on some approximations and the Rayleigh Quotient Theory, the simple selective power allocation scheme is derived for the low SNR scenario and the high SNR scenario, respectively. The methods are applicable in practice due to their low complexity.
著者
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FENG Wei
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Infor
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WANG Yanmin
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Infor
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LI Yunzhou
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Infor
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ZHOU Shidong
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Infor
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WANG Jing
State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Infor
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