水声信道中的迭代分组判决反馈均衡器

被引：12

作者：

张歆

张小蓟

机构：

[1] 西北工业大学航海学院

来源：

电子与信息学报 | 2013年 / 35卷 / 03期

关键词：

水声通信; 水声信道; 单载波频域均衡; 判决反馈均衡器; 频域信道估计;

D O I：

暂无

中图分类号：

TN929.3 [水下通信（声纳通信）];

学科分类号：

082403 ;

摘要：

与传统的时域均衡相比,频域均衡为单载波传输系统提供了一种计算更为有效的方法。该文对有大多径时延和多普勒频移的水声信道中的频域分组迭代判决反馈均衡器(IB-DFE)进行了研究,提出了一种联合迭代均衡和频域信道估计(JECE)算法,分析了JECE算法的性能以及不同数据参数对IB-DFE性能的影响,并计算了IB-DFE的计算复杂度。仿真结果表明,所提出的JECE算法对时变水声信道有更好的适应性。与TD-DFE相比,IB-DFE有3.6 dB以上的信噪比增益和约19%的复杂度增益,而且随着多径时延和多普勒频移的增加,这种性能增益会进一步增加。

引用

页码：683 / 688

页数：6

共 12 条

[1]

Joint detection andchannel estimation for block transmission schemes. Coelho F,Dinis R,Montezuma P. Military Communications Conference 2010 . 2010

[2]

SC-FDE for offsetmodulations:an efficient transmission technique forbroadband wireless systems. Miguel L,Rui D,Paulo M. IEEE Transactions onCommunications . 2012

[3]

SC-FDE V-BLASTsystem concept for MIMO over satellite with antennamisalignment. Schwarz R T,Knopp A,Lankl B. International Multi-Conference Systems,Signals and Devices(SSD)2012 . 2012

[4]

Iterative Fre-quency Domain Channel Estimation for DFT-precoded OFDM Systems using in-Band Pilots. Chan-Tong Lam,David D Falconer,Florence Danilo-Lemoine. IEEE Journal on Selected Areas in Communications . 2008

[5]

Iterative design and detection of a DEF inthe frequency domain. Benvenuto N,Tomasin S. IEEE Transactions on Communications . 2005

[6]

Frequency-domainequalization for single carrier MIMO underwater acousticcommunications. Zhang J,Zheng Y R,Xiao C S. IEEE Conference OCEANS 2008 . 2008

[7]

A computationally efficient doppler compensation system for underwater acoustic communications. Sharif B S,Neasham J,Hinton O R,et al. IEEE Journal of Oceanic Engineering . 2000

[8]

Recent advances in underwater acoustic communications&networking. Chitre M,Shahabudeen S,Freitag L,et al. MTS/IEEE OCEANS . 2008

[9]

Iterative frequency-domain channel estimation and equalization for relay-assisted SFBC single-carrier systems. Zhang H T,Zhang X,Yang D C. IEEE VehicularTechnology Conference Spring 2012 . 2012

[10]

Feedback Reliability Calculation for an Iterative Block Decision Feedback Equalizer. Gillian Huang,Andrew Nix,Simon Armour. . 2009

← 1 2 →