TY - JOUR
T1 - Multi-channel iterative FDE for single carrier block transmission over underwater acoustic channels
AU - He, Chengbing
AU - Huo, Siyu
AU - Zhang, Qunfei
AU - Wang, Han
AU - Huang, Jianguo
N1 - Publisher Copyright:
© 2013 IEEE.
PY - 2015/8/1
Y1 - 2015/8/1
N2 - Recently, single carrier block transmission (SCBT) has received much attention in high-rate phase-coherent underwater acoustic communication. However, minimum-mean-square-error (MMSE) linear FDE may suffer performance loss in the severely time dispersive underwater acoustic channel. To combat the channel distortion, a novel multi-channel receiver with maximum ratio combining and a low complex T/4 fractional iterative frequency domain equalization (FDE) is investigated to improve diversity gain and the bit error rate (BER) performance. The proposed method has been verified by the real data from a lake underwater acoustic communication test in November 2011. At 1.8 km, the useful data rates are around 1500 and 3000 bits/ s for BPSK and QPSK respectively. The results show the improvements of system performance. Compared with MMSE FDE system, the output SNR improvement is 6.9 dB, and the BER is from 10-3 to no error bits for BPSK. The output SNR improvement is 5.3 dB, and the BER is from 1.91×10-2 to 2.2×10-4 for QPSK.
AB - Recently, single carrier block transmission (SCBT) has received much attention in high-rate phase-coherent underwater acoustic communication. However, minimum-mean-square-error (MMSE) linear FDE may suffer performance loss in the severely time dispersive underwater acoustic channel. To combat the channel distortion, a novel multi-channel receiver with maximum ratio combining and a low complex T/4 fractional iterative frequency domain equalization (FDE) is investigated to improve diversity gain and the bit error rate (BER) performance. The proposed method has been verified by the real data from a lake underwater acoustic communication test in November 2011. At 1.8 km, the useful data rates are around 1500 and 3000 bits/ s for BPSK and QPSK respectively. The results show the improvements of system performance. Compared with MMSE FDE system, the output SNR improvement is 6.9 dB, and the BER is from 10-3 to no error bits for BPSK. The output SNR improvement is 5.3 dB, and the BER is from 1.91×10-2 to 2.2×10-4 for QPSK.
KW - iterative processing
KW - multi-channel frequency domain equalization
KW - single carrier
KW - underwater acoustic communication
UR - http://www.scopus.com/inward/record.url?scp=84941010083&partnerID=8YFLogxK
U2 - 10.1109/CC.2015.7224706
DO - 10.1109/CC.2015.7224706
M3 - 文章
AN - SCOPUS:84941010083
SN - 1673-5447
VL - 12
SP - 55
EP - 61
JO - China Communications
JF - China Communications
IS - 8
M1 - 7224706
ER -