Title :
A transmit antenna selection scheme for STBC MIMO OFDM systems with imperfect channel knowledge
Author :
Ghanem, K. ; Denidni, Tayeb A. ; Ghanem, F.
Author_Institution :
Quebec Univ., Montreal
Abstract :
In this paper, an adaptive MIMO-OFDM transmitter with imperfect CSI is proposed to reach a maximum transmission rate under a given required bit error rate (BER) and a total transmit power constraints. This transmitter uses the adaptive two-dimensional (2D) coder-beamformer derived in Zhou, S. and Giannakis, G. B., (2002) for each OFDM space-time coded subcarrier, and the greedy adaptive scheme in Hughes-Hartogs, D. (1989) to pursue power and bit loadings. The transmit antennas are selected according to the resultant subchannel Frobenius norm. Compared to the scheme using the whole number of available transmit antennas and despite a certain performance loss, the proposed reduced-complexity architecture provides a viable spectral efficiency.
Keywords :
MIMO communication; OFDM modulation; array signal processing; block codes; channel coding; error statistics; space-time codes; spectral analysis; transmitting antennas; OFDM space-time coded subcarrier; STBC MIMO OFDM systems; adaptive 2D coder-beamformer; adaptive MIMO-OFDM transmitter; bit error rate; channel knowledge; channel state information; greedy adaptive scheme; reduced-complexity architecture; spectral efficiency; subchannel Frobenius norm; transmit antenna selection scheme; transmit antennas; transmit power constraints; Array signal processing; Bit error rate; Block codes; Delay; Feedback; MIMO; OFDM modulation; Power system modeling; Transmitters; Transmitting antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395465
