TY - GEN
T1 - Performance analysis and transceiver design for adaptive BIC-MIMO-OFDM systems
AU - Chiu, Fu Hsuan
AU - Wu, Sau-Hsuan
AU - Kuo, C. C.Jay
PY - 2007
Y1 - 2007
N2 - 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 ρ, where n* = min(n t, n r), L is the number of channel taps and ρ 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that the proposed BIC-MIMO-OFDM scheme has better performance than adaptive trellis coded modulation (TCM) when outdated channel estimation is used.
AB - 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 ρ, where n* = min(n t, n r), L is the number of channel taps and ρ 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.
KW - COMMUNICATION
KW - CAPACITY
UR - http://www.scopus.com/inward/record.url?scp=36348941689&partnerID=8YFLogxK
U2 - 10.1109/WCNC.2007.91
DO - 10.1109/WCNC.2007.91
M3 - Conference contribution
AN - SCOPUS:36348941689
SN - 1424406595
SN - 9781424406593
T3 - IEEE Wireless Communications and Networking Conference, WCNC
SP - 468
EP - 473
BT - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
PB - IEEE
T2 - 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Y2 - 11 March 2007 through 15 March 2007
ER -