کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
446906 1443182 2012 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low complexity adaptation for SISO channel shortening equalizers
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Low complexity adaptation for SISO channel shortening equalizers
چکیده انگلیسی

Since the days of Digital Subscriber Links (DSL), time domain equalizers (TEQ's) have been used to combat time dispersive channels in Multicarrier Systems. In this paper, we propose computationally inexpensive techniques to recompute TEQ weights in the presence of changes in the channel, especially over fast fading channels. The techniques use no extra information except the perturbation to the channel itself, and provide excellent approximations to the new TEQ weights. Adaptation methods for two existing Channel shortening algorithms are proposed and their performance over randomly varying, randomly perturbed channels is studied. The proposed adaptation techniques are shown to perform admirably well for small changes in channels for OFDM systems.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: AEU - International Journal of Electronics and Communications - Volume 66, Issue 8, August 2012, Pages 600–604
نویسندگان
, ,