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An Adaptive Differential Equal Gain Transmission Technique using M-PSK Constellations
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 Title & Authors
An Adaptive Differential Equal Gain Transmission Technique using M-PSK Constellations
Kim, Young-Ju; Seo, Chang-Won;
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We propose an adaptive scheme of a differential codebook for temporally correlated channels. And the codeword entries of the propose codebook are selected among the set of M-PSK constellations - the values of M proposed in this paper are 8, 16, or 32. Firstly, we analyze mathematically how the optimal spherical cap radius of the proposed codebook is tracked. Then, we explain the practical implementation of the proposed adaptive method. Practically, some candidate differential codebooks we propose in this paper can be switched according to the temporal correlation coefficients of wireless channels in the proposed scheme. Monte-Carlo simulations demonstrate that the achievable throughput performance employing the proposed codebook is always superior to those of the differential codebooks employing M-PSK constellations and non-adaptive differential codebooks with the same amount of feedback information.
Closed-loop MIMO;adaptive differential codebook;LTE-A;temporally correlated channel;
 Cited by
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