TY - GEN
T1 - Bidirectional blind equalization based on the constant modulus and subspace-based algorithms
AU - Xi, Junyi
AU - Yan, Shefeng
AU - Xu, Lijun
AU - Tian, Jing
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2015/11/25
Y1 - 2015/11/25
N2 - A bidirectional blind equalization based on the constant modulus algorithm (CMA) and subspace-based algorithm (SBA) is proposed in this paper. Without any training sequence or channel estimation, blind equalization improves the transmission efficiency significantly in underwater acoustic communications. The combining scheme in which two outputs run in opposite directions exploits the diversity and suppresses the error propagation. Moreover, a single-input multiple-output (SIMO) system is adopted in the algorithm to obtain the multiple receivers diversity gain and achieves a much better performance. The simulation results demonstrate that the proposed bidirectional CMA shows much better performance in a high SNR than that in a low SNR, and the bidirectional SBA outperforms the conventional method by approximately 2dB in BPSK system and 2.5dB in QPSK system.
AB - A bidirectional blind equalization based on the constant modulus algorithm (CMA) and subspace-based algorithm (SBA) is proposed in this paper. Without any training sequence or channel estimation, blind equalization improves the transmission efficiency significantly in underwater acoustic communications. The combining scheme in which two outputs run in opposite directions exploits the diversity and suppresses the error propagation. Moreover, a single-input multiple-output (SIMO) system is adopted in the algorithm to obtain the multiple receivers diversity gain and achieves a much better performance. The simulation results demonstrate that the proposed bidirectional CMA shows much better performance in a high SNR than that in a low SNR, and the bidirectional SBA outperforms the conventional method by approximately 2dB in BPSK system and 2.5dB in QPSK system.
KW - Bidirectional operation
KW - blind equalization
KW - constant modulus algorithm (CMA)
KW - single-input multiple-output (SIMO)
KW - subspace-based algorithm (SBA)
UR - http://www.scopus.com/inward/record.url?scp=84960968329&partnerID=8YFLogxK
U2 - 10.1109/ICSPCC.2015.7338787
DO - 10.1109/ICSPCC.2015.7338787
M3 - Conference contribution
AN - SCOPUS:84960968329
T3 - 2015 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015
BT - 2015 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 5th IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2015
Y2 - 19 September 2015 through 22 September 2015
ER -