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引用次数: 2
摘要
本文进一步分析了最近引入的闭环传输分集方法(见Nagaraj, S.和Huang, Y.F, Asilomar Conference on Signals, Systems and Computers, 2000)。具体地说，由于选择性反馈的固有特性，可能节省的电量是通过容量分析量化的。在最大似然的意义上，导出了信道估计的最优自适应算法，以提供对反馈误差的鲁棒性，这些误差是由于移动设备的不正确检测引起的。
Downlink transmit diversity: feedback efficiency and robustness
A recently introduced method for closed-loop transmit diversity (see Nagaraj, S. and Huang, Y.F., Asilomar Conference on Signals, Systems and Computers, 2000) is further analyzed in this paper. Specifically, the amount of power saving possible due to the inherent feature of selective feedback is quantified via a capacity analysis. An optimal adaptive algorithm for channel estimation, in the sense of maximum likelihood, is derived to provide robustness against feedback errors, which arise due to incorrect detection at the mobile.
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