宽线性l_1范数RLS水声单载波判决反馈接收技术  

Adaptive DFE receiver with widely linear l_1-norm penalized RLS algorithm in the single carrier underwater acoustic communication system

作　　者：刘璐 孙大军[1,2] 张友文 LIU Lu;SUN Dajun;ZHANG Youwen(Underwater Acoustic Technology Key Laboratory, Harbin Engineering University, Harbin 150001, China;College of Underwater Acoustic Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]哈尔滨工程大学水声技术重点实验室,黑龙江哈尔滨150001 [2]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《哈尔滨工程大学学报》2018年第3期406-413,共8页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(61471138;61531012);国际科技合作专项项目(2013DFR20050);水声技术重点实验室基金项目(201420040)

摘　　要：为解决常规的递归最小二乘(recursive least squares,RLS)算法难以适应快变的水声信道,及未对水声信道的稀疏性加以利用导致均衡性能下降的问题,本文提出一种结合信道短化技术和基于l1范数宽线性变遗忘因子RLS自适应均衡技术判决反馈(decision feedback equalizer,DFE)接收机算法。试验结果表明:该接收机算法具有较低的计算复杂度,在稳态MSE和SER方面也具有较大的性能提升。The conventional RLS algorithm is hard to adapt to fast-changing underwater acoustic channel,in addition,because the sparseness of underwater acoustic channel is not utilized,the balanced performance decreases,in order to eliminate these defects,this paper proposed a novel DFE-based receiver algorithm,which combines channel shortening methods and l1-norm penalized Widely Linear(WL)Recursive Least Squares(RLS)adaptive balance technology with Variable Forgetting Factor(VFF).Experimental results show that,the proposed DFE receiver algorithm has a low computing complexity and a better performance in terms of SER and steady-state MSE.

关 键 词：自适应判决反馈均衡 水声通信 自适应RLS算法 信道短化 宽线性 变遗忘因子 

分 类 号：TN911.5[电子电信—通信与信息系统] TB567[电子电信—信息与通信工程]