講演名 | 2012-10-19 On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver , |
---|---|
PDFダウンロードページ | PDFダウンロードページへ |
抄録(和) | |
抄録(英) | In mobile environment, the performance of OFDM mobile receivers is degraded severely because of Inter-Carrier-Interference (ICI) caused by Doppler spread. Therefore, ICI canceller is an important task for the OFDM mobile receivers. [1] and [2] proposed an efficient method to reduce ICI. The main idea of this method is to linearly approximate time varying channel within one OFDM symbol. Then a large ICI matrix equation is given. However, in [1], [2], the estimated values of the channel transfer function-the diagonal of the ICI matrix is corrupted by ICI. Consequently, the equalized signal still is distorted. In this paper, we proposed an iterative method to improve performance of the original method. We implemented Jacobi iteration method with low complexity to solve the large ICI matrix equation. Next, at second iteration of Jacobi method. we improve the diagonal by removing ICI power from pilot symbols and re-estimating the channel transfer function. Simulation results for ISDB-T mode 3 demonstrated that our method could double performance of the original method under TU-6 channel and Doppler spread. The improvement is better for two paths and one path Doppler channel. |
キーワード(和) | |
キーワード(英) | Orthogonal frequency-division multiplexing (OFDM) / Jacobi Iteration / Inter-Carrier Interference (ICI) |
資料番号 | RCS2012-156 |
発行日 |
研究会情報 | |
研究会 | RCS |
---|---|
開催期間 | 2012/10/10(から1日開催) |
開催地(和) | |
開催地(英) | |
テーマ(和) | |
テーマ(英) | |
委員長氏名(和) | |
委員長氏名(英) | |
副委員長氏名(和) | |
副委員長氏名(英) | |
幹事氏名(和) | |
幹事氏名(英) | |
幹事補佐氏名(和) | |
幹事補佐氏名(英) |
講演論文情報詳細 | |
申込み研究会 | Radio Communication Systems (RCS) |
---|---|
本文の言語 | ENG |
タイトル(和) | |
サブタイトル(和) | |
タイトル(英) | On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver |
サブタイトル(和) | |
キーワード(1)(和/英) | / Orthogonal frequency-division multiplexing (OFDM) |
第 1 著者 氏名(和/英) | / Hai Minh TRAN |
第 1 著者 所属(和/英) | Graduate School of Engineering and Science, University of the Ryukyus |
発表年月日 | 2012-10-19 |
資料番号 | RCS2012-156 |
巻番号(vol) | vol.112 |
号番号(no) | 239 |
ページ範囲 | pp.- |
ページ数 | 6 |
発行日 |