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	Adaptive RC QC-LDPC channel coding for frequency hopping shallow water acoustic communication
	Lin, Meiyin ; Xu, Xiaomei ; Chen, Youg ; Zhang, ; Xu XM(许肖梅) ; Chen YG(陈友淦) ; Zhang L(张兰)
	2014
关键词	Acoustic noise Channel coding Convolutional codes Forward error correction Frequency hopping Impulse response Signal to noise ratio Table lookup
英文摘要	Conference Name:OCEANS 2014 - Taipei. Conference Address: Taipei, Taiwan. Time:April 7, 2014 - April 10, 2014.; Shallow water acoustic (SWA) channels are fast varying spatially and temporarily according to environmental conditions. Adaptive coding is appealing for SWA communications to improve the system efficiency by matching transmission parameters to channel variations. In this paper, we construct rate-compatible QC-LDPC (RC QC-LDPC) codes by extending information bits in frequency hopping (FH) SWA communication system. Combining actual channel impulse response measurement in Quangang Xiaocuo harbor, Fujian and Wuyuan bay, Xiamen, we build two SWA channels, and analyze the performances of RC QC-LDPC codes under different channel environment in FH-SWA communication system. Simulation results show that RC QC-LDPC codes can greatly reduce the bit error rate (BER) of the communication system, improve the system performance; The lower the code rate, the better the BER; The harsher the channel (such as longer channel delay, more multipath, lower signal-to-noise ratio), the lower the code rate is needed to meet system communication indicators; And look-up table of RC QC-LDPC code rate to meet communication performance indicator in FH-SWA system under different signal-to-noise ratio is given. The look-up table also calculates the data saving rate of RC QC-LDPC codes relative to 1/2 code rate. RC QC-LDPC codes in FH-SWA communication system can improve channel utilization, with flexible encoding and decoding, has good prospects in SWA communication.
语种	英语
出处	http://dx.doi.org/10.1109/OCEANS-TAIPEI.2014.6964347
出版者	Institute of Electrical and Electronics Engineers Inc.
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85342]
专题	海洋环境－会议论文
推荐引用方式 GB/T 7714	Lin, Meiyin,Xu, Xiaomei,Chen, Youg,et al. Adaptive RC QC-LDPC channel coding for frequency hopping shallow water acoustic communication. 2014-01-01.

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