TY - GEN
T1 - Hybrid time-frequency domain equalization for single-carrier underwater acoustic communications
AU - He, Chengbing
AU - Huang, Jianguo
AU - Zhang, Qunfei
PY - 2012
Y1 - 2012
N2 - Single-carrier block transmission (SCBT) has a great potential for providing higher bandwidth efficiency over frequency- selective channels with reduced computational complexity and low peak-to-average power ratio (PAPR). In this paper we propose a hybrid time-frequency domain equalization method for pseudorandom noise (PN) based single-carrier block transmissions. The proposed hybrid time-frequency domain equalizer includes two parts: a multi-channel frequency domain equalizer and a single channel adaptive time domain decision feedback equalizer (DFE). Bidirectional DFE and time-reversal diversity processing to cancel both residual post-cursor and pre-cursor intersymbol interference (ISI) is extended to hybrid time-frequency domain equalizer. Underwater acoustic communication systems with single transmitter and multiple receivers have been designed and tested in lake in 2011. At a distance of 1.8 km, the useful data rates around 1500- 7000 bps were achieved with uncoded bit error rate (BER) 10-3l-10-5using the presented schemes. Experiment shows the performance can be enhanced by 1.5- 3.8 dB in terms of output signal-to-noise ratio (SNR). A sea experiment was conducted with single transmitter and single receiver in 2012. At a distance of 625 m, the useful data rates around 8750 bps were achieved with uncoded bit error rates 10 -2- 10-3 using the presented schemes. Experiment shows the performance can be enhanced by 1.6-2 dB in terms of output SNR.
AB - Single-carrier block transmission (SCBT) has a great potential for providing higher bandwidth efficiency over frequency- selective channels with reduced computational complexity and low peak-to-average power ratio (PAPR). In this paper we propose a hybrid time-frequency domain equalization method for pseudorandom noise (PN) based single-carrier block transmissions. The proposed hybrid time-frequency domain equalizer includes two parts: a multi-channel frequency domain equalizer and a single channel adaptive time domain decision feedback equalizer (DFE). Bidirectional DFE and time-reversal diversity processing to cancel both residual post-cursor and pre-cursor intersymbol interference (ISI) is extended to hybrid time-frequency domain equalizer. Underwater acoustic communication systems with single transmitter and multiple receivers have been designed and tested in lake in 2011. At a distance of 1.8 km, the useful data rates around 1500- 7000 bps were achieved with uncoded bit error rate (BER) 10-3l-10-5using the presented schemes. Experiment shows the performance can be enhanced by 1.5- 3.8 dB in terms of output signal-to-noise ratio (SNR). A sea experiment was conducted with single transmitter and single receiver in 2012. At a distance of 625 m, the useful data rates around 8750 bps were achieved with uncoded bit error rates 10 -2- 10-3 using the presented schemes. Experiment shows the performance can be enhanced by 1.6-2 dB in terms of output SNR.
KW - Bidirectional DFE
KW - Hybrid time-frequency domain equalization
KW - Single-carrier block transmission
KW - Time-reversal diversity
KW - Underwater acoustic communication
UR - http://www.scopus.com/inward/record.url?scp=84871557788&partnerID=8YFLogxK
U2 - 10.1145/2398936.2398953
DO - 10.1145/2398936.2398953
M3 - 会议稿件
AN - SCOPUS:84871557788
SN - 9781450317733
T3 - Proceedings of the 7th ACM International Conference on Underwater Networks and Systems, WUWNet 2012
BT - Proceedings of the 7th ACM International Conference on Underwater Networks and Systems, WUWNet 2012
T2 - 7th ACM International Conference on Underwater Networks and Systems, WUWNet 2012
Y2 - 5 November 2012 through 6 November 2012
ER -