第3讲 FTN系统中的预编码及低复杂度接收技术  

Precoding and Low Complexity Receiver Technology in Faster-Than-Nyquist Transmission System

作　　者：聂晟昱 郭明喜[2] 沈越泓[2] 段昊[3] 童莹[1] 

机构地区：[1]解放军理工大学通信工程学院研究生5队,江苏南京210007 [2]解放军理工大学通信工程学院 [3]解放军理工大学通信工程学院研究生3队

出　　处：《军事通信技术》2015年第1期77-82,104,共7页Journal of Military Communications Technology

基　　金：国家自然科学基金资助项目(61301157)

摘　　要：由于FTN(Faster Than Nyquist)系统所引起的码间串扰长度是无限长的,如何消除无限长的码间串扰,同时保证FTN系统的低复杂度检测将成为制约FTN技术继续发展的主要原因。文章以低复杂度接收为目标,重点介绍了FTN传输系统中的预编码及低复杂度均衡技术,包括:GTMH-预编码、M-BCJR算法、加窗Chase均衡和频域均衡算法,并对四种算法进行了分析对比,指出了各自的优缺点及应用场合。FTN系统中的预编码及低复杂度接收技术为其传输技术的实用化打下基础。As the length of the ISI（Inter-Symbol Interference） introduced by the system of FTN（Faster-than-Nyquist） is infinite, to eliminate the ISI and enable low complexity of the de- tection in FTN system solves the problem that restricts the development of the FTN. The goal of low complexity receiver, precoding and some low complexity equalization technology in FTN transmission system were introduced in detail, including： GTMH-precoding, M-BCJR algo- rithm, windowed Chase equalizer and frequency-domain equalization algorithm. The analysis and comparison of the four algorithms were given; and the in advantages, disadvantages and applica- tions were also presented. The foundation of the practical application of FTN transmission tech- nology is laid by precoding and low complexity receiver technology in FTN transmission system.

关 键 词：超奈奎斯特速率 码间串扰 预编码 低复杂度 

分 类 号：TN911[电子电信—通信与信息系统]