%0 Journal Article
%T A Novel Algorithm of Mitigating Error Propagation in DEF for DTV Receivers<br>一种减小DTV接收机DFE误差传播的新算法
%A WU Xiao-hu
%A LONG Bi-qi
%A ZHOU Chang-ruing
%A WANG Jin-lin
%A <br>武晓华
%A 龙必起
%A 周长明
%A 王劲林
%J 中国图象图形学报
%D 2006
%I 
%X Decision feedback equalizer(DFE) is an efficient scheme for suppressing intersymbol interference(ISI) in vestigial sideband(VSB) based digital TV(DTV) receivers.However,it suffers from error propagation(EP).This paper considers the use of soft decisions in mitigating EP in a DFE.An optimized soft decision algorithm using the hyperbolic tangent function in the decision device is proposed to improve performance over reducing EP.Furthermore,in order to speed up the EP simulation process,a simple but effective modification is made in the feedback tap weight updating process.Computer simulation results show that the proposed soft decision algorithm nearly meets the EP performance of ideal DFE,which is far better in performance compared to the erasure algorithm.
%K decision feedback equalizer
%K error propagation
%K soft decision<br>判决反馈均衡器
%K 误差传播
%K 软判决
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=D06194629680C940ACE75262F54B9D85&aid=65AAF818F9E1EE3F&yid=37904DC365DD7266&vid=708DD6B15D2464E8&iid=708DD6B15D2464E8&sid=22E618DED444E3B5&eid=AFA030E84E3FC132&journal_id=1006-8961&journal_name=中国图象图形学报&referenced_num=0&reference_num=7