講演名 2005-10-14
Iterative Frequency and Phase Compensation under Very Low SNR(Advanced Technology-III)
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抄録(和)
抄録(英) Frequency and phase compensation algorithm for very low SNR communication is proposed. Residual frequency and phase error in the codeword are estimated by comparing the phases between soft decision outputs of code symbols and the channel symbols at each decoding iteration. As the iteration goes on, phase and frequency errors decrease and thus, the reliability of the soft decision output at next iteration becomes even more enhanced. This enhances the reliability of frequency and phase error estimation at next iteration, again. Consequently, this synergy effect between decoding and carrier compensation effectively improves the performances of decoding and carrier compensation together. For reliable estimation, the phase error and frequency error are averaged over all the symbols in the code word and are compensated together. The proposed algorithm can be very usefully employed especially for low SNR communication as satellite communication uplink in that it does not require a preamble or pilot signal for synchronization and shows satisfactory performance under low SNR range, i.e., the nominal working range of the iterative decoding.
キーワード(和)
キーワード(英) Low SNR / Synchronization / Carrier recovery / lterative decoding / Turbo code
資料番号 SAT2005-41
発行日

研究会情報
研究会 SAT
開催期間 2005/10/7(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 Satellite Telecommunications (SAT)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) Iterative Frequency and Phase Compensation under Very Low SNR(Advanced Technology-III)
サブタイトル(和)
キーワード(1)(和/英) / Low SNR
第 1 著者 氏名(和/英) / Kwonhue Choi
第 1 著者 所属(和/英)
Dept of EECS, Yeungnam University
発表年月日 2005-10-14
資料番号 SAT2005-41
巻番号(vol) vol.105
号番号(no) 322
ページ範囲 pp.-
ページ数 5
発行日