Title :
Adaptive Transmission With Linear Computational Complexity in MIMO-OFDM Systems
Author :
Luo, Zhendong ; Gao, Hong ; Liu, Yuanan
Author_Institution :
Alcatel-Lucent, Beijing
Abstract :
A novel adaptive transmission scheme is proposed to improve the computational efficiency of conventional adaptive algorithms for multiple-input multiple-output orthogonal frequency-division multiplexing systems. By exploiting the stationary ergodicity of subchannel amplitudes, the proposed scheme can reduce the complexity of any existing adaptive algorithms to a considerably low level that is linear in the number of subchannels, while it causes little performance degradation.
Keywords :
MIMO communication; OFDM modulation; computational complexity; MIMO-OFDM systems; adaptive algorithms; adaptive transmission; linear computational complexity; multiple-input multiple-output orthogonal frequency-division multiplexing systems; subchannel amplitudes; Adaptive algorithm; Computational complexity; Degradation; Fading; MIMO; OFDM; Random processes; Receiving antennas; Transmitters; Transmitting antennas; Adaptive transmission; fading channels; multiple-input multiple-output (MIMO) systems; orthogonal frequency-division multiplexing (OFDM);
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2007.906397
