کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7117054 1461215 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
Non-orthogonal pilot pattern for sparse channel estimation in large-scale MIMO-OFDM system
چکیده انگلیسی
From the perspective of compressed sensing (CS) theory, the channel estimation problem in large-scale multiple input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) system is investigated. According to the theory, the smaller mutual coherence the reconstruction matrix has, the higher success probability the estimation can obtain. Aiming to design a pilot that can make the system reconstruction matrix having the smallest mutual coherence, this paper proposes a low complexity joint algorithm and obtains a kind of non-orthogonal pilot pattern. Simulation results show that compared with the conventional orthogonal pilot pattern, applying the proposed pattern in the CS channel estimation can obtain the better normalized mean square error performance. Moreover, the bit error rate performance of the large-scale MIMO-OFDM system is also improved.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of China Universities of Posts and Telecommunications - Volume 23, Issue 4, August 2016, Pages 63-68
نویسندگان
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