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A Novel Dual-Layer Differential Equal Gain Transmission Technique Using M-PSK Constellations
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 Title & Authors
A Novel Dual-Layer Differential Equal Gain Transmission Technique Using M-PSK Constellations
Kim, Young-Ju; Seo, Chang-Won;
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We propose a dual-layer differential equal-gain codebook design methodology for LTE-Advanced(LTE-A),, and radar system having multiple transmit and receive antennas, and make computer simulations to evaluate its link-level performaces. M-ary phase shift keying constellation is used as its codeword elements to utilize low-cost power amplifiers at mobile stations. Especially, the proposed codebook can meet radar systems requirement for the high-powered equal-gain transmission property. Due to the temporal correlation of the adjacent channel, the proposed differential codebook can 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. The proposed codebook has the same properties of LTE codebook that is, constant modulus, complexity reduction, and nested property. Computer simulations show that the proposed codebook performs better than the conventional 8-ary codebooks with the same amount of feedback information.
Closed-Loop MIMO;Differential Codebook;LTE-A;Spatial Multiplexing;
 Cited by
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