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	一种双参数可调的水声信道自适应均衡算法; Two-parameter Adjustable Underwater Acoustic Channel Equalization Algorithm
	李芳兰 ; 周跃海 ; 童峰
	2013-06-15
关键词	信息处理技术 浅海水声通信 自适应均衡 双参数平行滤波器组算法 information processing shallow water acoustic channel adaptive equalization two-parameter adjustable least mean square equalization algorithm
英文摘要	针对浅海水声信道固有的随机时-空-频变、高噪、强多径等特性及变化的多径时延扩展,在变步长最小均方(lMS)平行滤波器组(Pfb-lMS)算法的基础上提出了一种新的水声通信自适应均衡算法。该算法将变阶数和变步长的调整结合起来,降低了算法对迭代步长和均衡器阶数的敏感度。仿真结果表明,新算法在参数适应性方面优于传统lMS及Pfb-lMS算法。; The shallow water acoustic channel is characterized as a complex time,space and frequency-variant channel with several negative factors,e.g.narrow band,high ambient noise,multipath distortion and polytropic multipath time delay which pose serious difficulty for the underwater acoustic communication.A novel two-parameter adjustable least mean square(LMS) equalization algorithm is presented based on the classic parallel filter banks LMS(PFB-LMS) algorithm.The new algorithm enables hybrid adjustment of step-size and tap-length so that the sensitivity of step-size and tap-length parameter selections is alleviated.Simulation results show that the new algorithm outperforms the traditional LMS and PFB-LMS algorithms in parameter robustness under time varying channels.; 国家自然科学基金项目(11274259); 教育部高等学校博士学科点专项基金项目(20120121110030)
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/104655]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	李芳兰,周跃海,童峰. 一种双参数可调的水声信道自适应均衡算法, Two-parameter Adjustable Underwater Acoustic Channel Equalization Algorithm[J],2013.
APA	李芳兰,周跃海,&童峰.(2013).一种双参数可调的水声信道自适应均衡算法..
MLA	李芳兰,et al."一种双参数可调的水声信道自适应均衡算法".(2013).

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