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Performance Analysis of Dual-Layer Differential Precoding Technique Using 8-PSK Constellation
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 Title & Authors
Performance Analysis of Dual-Layer Differential Precoding Technique Using 8-PSK Constellation
Park, Noe-Yoon; Kim, Young-Ju;
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 Abstract
Dual-layer differential codebook using 8-PSK (phase shift keying) constellation as its codeword elements, is proposed for Long term evolution (LTE) and/or LTE-Advanced systems. Due to the temporal correlation of the adjacent channel matrices, the consecutive precoding matrices are likely to be similar. This approach quantize only the differential information of the channel instead of the whole channel subspace, which virtually increase the codebook size to realize more accurate quantization of the channel. Especially, the proposed codebook has the same properties of LTE release-8 codebook that is, constant modulus, complexity reduction, and nested property. The mobile station can be designed by using less expensive non-linear amplifier utilizing constant modulus property. Computer simulations show that the capacity of the proposed dual-layer codebook performs almost 1.2dB better than those of any other non-differential codebooks with the same amount of feedback information.
 Keywords
Closed-loop MIMO;differential codebook;LTE;LTE-A;spatial multiplexing;
 Language
Korean
 Cited by
1.
M-PSK 성운을 이용한 새로운 이중계층 차분 동 이득 전송 기술,김영주;서창원;

한국전자파학회논문지, 2015. vol.26. 7, pp.627-635 crossref(new window)
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