2017年1月
Blind Channel Estimation by Em Algorithm for Ofdm Systems
電子情報通信学会論文誌
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- 巻
- E100-A
- 号
- no.1
- 開始ページ
- 210
- 終了ページ
- 218
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1587/transfun.E100.A.210
- 出版者・発行元
- 電子情報通信学会
<p>It is necessary to estimate channel state information coherently to equalize the received signal in wireless communication systems. The pilot symbol, known at the receiver, aided channel estimator degrades the transmission efficiency because it requires the signal spaces and the energy for the transmission. In this paper, we assume a fixed wireless communication system in line of sight slowly varying channel and propose a new blind channel estimation method without help from the pilot symbol for Orthogonal Frequency Division Multiplexing systems. The proposed estimator makes use of the Expectation-Maximization algorithm and the correlation property among the channel frequency responses by considering the assumed channel environment. By computer simulations, we show that the proposed estimator can asymptotically achieve bit error rate performance by using the ideal channel estimation.</p>
- リンク情報
- ID情報
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- DOI : 10.1587/transfun.E100.A.210
- CiNii Articles ID : 130005180825