標題: Performance analysis and transceiver design for adaptive BIC-MIMO-OFDM systems
作者: Chiu, Fu-Hsuan
Wu, Sau-Hsuan
Kuo, C. -C. Jay
交大名義發表
National Chiao Tung University
公開日期: 2007
摘要: The performance analysis and transceiver design of an adaptive bit-interleaved-coded multi-input multi-output orthogonal frequency division multiplexing (BIC-MIMO-OFDM) system without channel station information (CSI) in priori are investigated in this research. First, the noncoherent capacity of a MIMO-OFDM system with N subcarriers, n(t) transmit antennas and n(r) receive antennas is analyzed. It is shown that the lower bound of noncoherent capacity in the high signal-to-noise ratio (SNR) region is asymptotically equal to n* (1-n* L/N) log rho, where n* = min(n(t), n(r)), L is the number of channel taps and rho is the SNR value. Then, an adaptive BIC-MIMO-OFDM system based on transmitter beamforming and variable-rate-variable-power (VRVP) QAM is proposed. The throughput of adaptive scheme can achieve the noncoherent capacity, however, the gap to the coherent capacity cannot be totally compensated due to the overhead of training. The effect of imperfect channel state information (CSI) feedback is studied. It is demonstrated by numerical simulation that the proposed BIC-MIMO-OFDM scheme has better performance than adaptive trellis coded modulation (TCM) when outdated channel estimation is used.
URI: http://dx.doi.org/10.1109/WCNC.2007.91
http://hdl.handle.net/11536/134451
ISBN: 978-1-4244-0658-6
ISSN: 1525-3511
DOI: 10.1109/WCNC.2007.91
期刊: 2007 IEEE WIRELESS COMMUNICATIONS & NETWORKING CONFERENCE, VOLS 1-9
起始頁: 468
結束頁: +
顯示於類別:會議論文