QQ客服 官方微博 反馈留言

	Design and application of dynamic coding in shallow water acoustic communications
	Chen, Youga ; Xu, Xiaomei ; Zhang, Lan ; Zou, Zheguang ; Chen YG(陈友淦) ; Xu XM(许肖梅) ; Zhang L(张兰)
	2012
关键词	Channel state information Communication systems Data communication systems Design Oceanography Orthogonal frequency division multiplexing Sensitivity analysis Table lookup Underwater acoustics
英文摘要	Conference Name:OCEANS 2012 MTS/IEEE Yeosu Conference: The Living Ocean and Coast - Diversity of Resources and Sustainable Activities. Conference Address: Yeosu, Korea, Republic of. Time:May 21, 2012 - May 24, 2012.; Marine Technology Society (MTS); IEEE Oceanic Engineering Society (OES); Korean Assoc. Ocean Sci. Technol. Soc. (KAOSTS); In fast temporal variations shallow water acoustic (SWA) channels, flexible channel coding rate should be desired in the design of practical error control SWA communication system. Herein, as one of the dynamic coding schemes, rate compatible LDPC (RC-LDPC) codes combing OFDM technique are proposed to improve the system reliability for SWA communications. Based on the automatic repeat request (ARQ) mechanism, the proposed SWA OFDM system consists of three important preprocessing: channel state information (CSI) estimator, signal-to-noise ratio (SNR) estimator and RC-LDPC pattern. The design of RC-LDPC codes and SWA channel profile are described. A look-up table (LUT) of RC-LDPC performances for ARQ-SWA system is built via statistical simulation test. For the proposed scheme, we define and derive the sensitivity to channel time variations and the effects of different performance target BER threshold, which are further confirmed via numerical results. It is shown that RC-LDPC codes have good performances with wide range of rates in SWA channels. Finally, coding rate distributions of RC-LDPC codes in different SNR at BER below 104 for Xiamen harbor SWA channel are investigated. 漏 2012 IEEE.
语种	英语
出处	http://dx.doi.org/10.1109/OCEANS-Yeosu.2012.6263386
出版者	IEEE Computer Society
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85331]
专题	海洋环境－会议论文
推荐引用方式 GB/T 7714	Chen, Youga,Xu, Xiaomei,Zhang, Lan,et al. Design and application of dynamic coding in shallow water acoustic communications. 2012-01-01.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。