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	Performance of Turbo decoder with Iterative DFE in Shallow Water Acoustic Channels
	Liu, Shengxing ; Xu, Xiaomei ; Liu SX(刘胜兴) ; Xu XM(许肖梅)
	2007
英文摘要	Conference Name:3rd International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM 2007). Conference Address: Shanghai, PEOPLES R CHINA. Time:SEP 21-25, 2007.; A shallow water acoustic channel model including time-varying fading, multipath and additive noise is introduced in this paper Based on the model a new structure of turbo decoder with iterative decision feedback equalizer (DFE) is built. In the structure, the conventional turbo decoder is modified to generate all coded bits ( information and parity bits), and a DFE is implemented in the turbo decoding iteration loop, so that the turbo decoder and the DFE operate in a mutual support fashion. Compared with turbo equalizer which adopts soft-in-soft-out channel equalizer the structure is much simpler but efficient because hard decisions are passed from turbo decoder to DFE and trellis search corresponding to turbo equalization is needless. Simulations are carried out for a rate 1/3 turbo code with g=(15,13) in a three-path shallow water acoustic channel. Compared with the conventional DFE with iterative turbo decoder the structure improves 2dB in the performance.
语种	英语
出处	http://dx.doi.org/10.1109/WICOM.2007.274
出版者	I C WIREL COMM NETW
内容类型	其他
源URL	[http://dspace.xmu.edu.cn/handle/2288/85309]
专题	海洋环境－会议论文
推荐引用方式 GB/T 7714	Liu, Shengxing,Xu, Xiaomei,Liu SX,et al. Performance of Turbo decoder with Iterative DFE in Shallow Water Acoustic Channels. 2007-01-01.

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