修正FTF算法用于高速数传快衰落信道自适应均衡的研究

短波高速数传是当前通信领域研究的一个重要方面,克服这类信道快衰落时变特性给数传带来的障碍是研究的中心课题.近些年提出和探讨的最小平方自适应均衡新技术,人们认为是解决这一问题的有效途径,普遍为人关注.本文对作者已提出的计算复杂度低、稳定性良好的修正 FTF 自适应均衡算法作了进一步研究.考查了其硬件实现方面的问题并模拟分析了均衡性能,初值选取,最佳级数和启动时训练与否的影响等,得出了许多有益的结论.这些分析与讨论对于硬件实现是十分必要的.

STUDY OF ADAPTIVE EQUALIZATION USING MODIFED FTF ALGORITHMS FOR HIGH-SPEED DATA TRANS MISSION OVER FAST FADING CHANNEL

High-speed data transmission over short-wave channel is,currently,avery important aspect in communcation field,and its central research subject is toovercome the serious obstacle on the transmission introduced by the fast fadingand disperision of the channel.Lcast-squares adaptive equalization techniquesproposed and studied in recent years are supposed to be effeetive methods to solvethe problem,Hence they are very attractive.In this paper is made further studyof the modified FTF adaptive equalization algorithm proposed by the authorpreviously,which has low computational complexity and good numerical stability.Investigation is carried out of its hardware implem entation.and simulation of itsequalization performances,initial value decision,optimum number of the stages,and affects of using or not training sequences when starting,etc.Many usefulconclusions are obtained.These analysis and dicussion are very important forhardware realization.