کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
564932 875658 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pilot signal design algorithm for efficient symbol time offset estimation in an OFDM system
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر پردازش سیگنال
پیش نمایش صفحه اول مقاله
Pilot signal design algorithm for efficient symbol time offset estimation in an OFDM system
چکیده انگلیسی

This paper presents novel pilot signal design algorithms for efficient symbol time offset estimation in an OFDM system. Evenly spaced pilot signals in the frequency-domain have large correlation in the time-domain, and the ML function of the symbol time offset estimator induces an inaccurate value of time offset. Novel pilot signal design algorithms—Sine Algorithm, Shift Algorithm, and Sine and Shift Algorithm—are developed in terms of positions and values of pilot signals so that the accuracy of the symbol time offset estimator can be improved. Simulation results show that these algorithms decrease the variance of estimate, especially in a time dispersive channel, improving the system performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Signal Processing - Volume 87, Issue 3, March 2007, Pages 489–499
نویسندگان
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