Title :
Improved space-time coding for MIMO-OFDM wireless communications
Author :
Blum, Rick S. ; Li, Ye ; Winters, Jack H. ; Yan, Qing
Author_Institution :
AT&T Bell Labs., Middletown, NJ, USA
fDate :
11/1/2001 12:00:00 AM
Abstract :
Improved space-time coding for multiple-input multiple-output orthogonal frequency division multiplexing is studied for wireless systems using QPSK modulation for four transmit and four receive antennas. A 256-state code is shown to perform within 3 dB of outage capacity (and within 2 dB with perfect channel estimation), which is better than any other published result without using iterative decoding
Keywords :
MIMO systems; OFDM modulation; digital radio; diversity reception; maximum likelihood sequence estimation; modulation coding; quadrature phase shift keying; 256-state code; MIMO-OFDM wireless communications; QPSK modulation; multiple-input multiple-output system; orthogonal frequency division multiplexing; outage capacity; perfect channel estimation; receive antennas; space-time coding; transmit antennas; Interference cancellation; Lifting equipment; MIMO; Maximum likelihood decoding; Maximum likelihood estimation; OFDM; Quadrature phase shift keying; Receiving antennas; Transmitting antennas; Wireless communication;
Journal_Title :
Communications, IEEE Transactions on
