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http://dx.doi.org/10.5573/ieie.2015.52.1.024

A Novel Differential Equal Gain Transmission Technique using M-PSK Constellations in MIMO System  

Kim, Young-Ju (School of Information and Communication Engineering, Chungbuk National University)
Seo, Chang-Won (School of Information and Communication Engineering, Chungbuk National University)
Park, Noeyoon (School of Information and Communication Engineering, Chungbuk National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.52, no.1, 2015 , pp. 24-31 More about this Journal
Abstract
A differential codebook using M-ary phase shift keying (M-PSK) constellation as its codeword elements, is proposed for Long term evolution (LTE), LTE-Advanced (LTE-A), and/or WiMAX systems. Due to the temporal correlation of the adjacent channel, 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 a less expensive non-linear amplifier utilizing the constant modulus property. Computer simulations show that the capacity of the proposed codebook performs better than LTE release-8 codebook with the same amount of feedback information.
Keywords
Closed-loop MIMO; differential codebook; LTE; LTE-A;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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