一种容量上界最大化的量化反馈方法

doi:10.3969/j.issn.1001-2400.2010.03.030

Abstract

Abstract:

The quantization and limited feedback of channel state information (CSI) for the Multiple-input Multiple-output Broadcasting Channel(MIMO BC) are considered. Through analysis, a capacity upperbound for the receiver is derived and a novel quantized-feedback scheme is constructed based on this bound maximizing. The novel scheme utilizes the benefits of the random quantization codebook and considers not only the channel direction but also the gain of the sub-channel. Simulation shows that the proposed scheme improves the system capacity in the presence of quantization errors obviously and has less complexity than the conventional method, which only includes channel direction information.

Key words: multiple-input multiple-output(MIMO), broadcasting channel(BC), random quantization codebook, quantization, limited feedback, capacity upperbound

XIE Fang;YUAN Chao-wei;CHENG Tie-zheng;ZHAO Wei. Quantized-feedback scheme based on capacity upperbound maximizing in the MIMO BC system[J].J4, 2010, 37(3): 554-558.

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Quantized-feedback scheme based on capacity upperbound maximizing in the MIMO BC system

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