TY - JOUR
T1 - Linear constellation-precoding for OFDM with maximum multipath diversity and coding gains
AU - Liu, Zhiqiang
AU - Xin, Yan
AU - Giannakis, Georgios B.
PY - 2001
Y1 - 2001
N2 - This paper introduces linear constellation precoding (LCP) for OFDM transmissions over frequency-selective fading channels. Exploiting the correlation structure of OFDM subchannels, and choosing system parameters properly, we first perform optimal subcarrier grouping to divide the set of correlated subchannels into subsets. Within each subset, a non-redundant constellation-specific unitary precoder is then designed to achieve maximum multipath diversity and coding gains. While greatly reducing the decoding complexity and simplifying the LCP design, subcarrier grouping offers optimal performance by maximizing multipath diversity and coding gains. In addition, the proposed system does not sacrifice the transmission rate. Analytic evaluation and corroborating simulations reveal its performance merits.
AB - This paper introduces linear constellation precoding (LCP) for OFDM transmissions over frequency-selective fading channels. Exploiting the correlation structure of OFDM subchannels, and choosing system parameters properly, we first perform optimal subcarrier grouping to divide the set of correlated subchannels into subsets. Within each subset, a non-redundant constellation-specific unitary precoder is then designed to achieve maximum multipath diversity and coding gains. While greatly reducing the decoding complexity and simplifying the LCP design, subcarrier grouping offers optimal performance by maximizing multipath diversity and coding gains. In addition, the proposed system does not sacrifice the transmission rate. Analytic evaluation and corroborating simulations reveal its performance merits.
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M3 - Conference article
AN - SCOPUS:0035574956
SN - 1058-6393
VL - 2
SP - 1445
EP - 1449
JO - Conference Record of the Asilomar Conference on Signals, Systems and Computers
JF - Conference Record of the Asilomar Conference on Signals, Systems and Computers
T2 - 35th Asilomar Conference on Signals, Systems and Computers
Y2 - 4 November 2001 through 7 November 2001
ER -