講演名 2006-05-25
Serially Concatenated Doubly Differential PSK for Improved Noncoherent Iterative Detection(HISC2006)
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抄録(和)
抄録(英) Serial concatenation of a convolutional encoder, a bit interleaver, and a recursive modulator provides strong protection against transmission errors and can be decoded iteratively. When used for transmission over channels introducing a random and potentially time varying phase rotation, noncoherent softinput soft-output demodulation must be used at the receiver. In many cases, however, noncoherent demodulation effectively removes the recursiveness of the modulator, thus harming the convergence of iterative decoding. In this paper we propose a serially concatenated system with doubly differential phase shift keyed (DDPSK) modulation employing a generator polynomial G(D)=1/(1-D^2). We demonstrate that this DDPSK system retains full recursiveness under noncoherent demodulation and hence assures good convergence behavior for iterative decoding. Also, by regarding such modulation as either doubly differential with generator polynomial G(D)=1/(1-D)(1+D), or as two parallel singly differential modulations with polynomial G(D)=1/(1-D) acting independently on odd and even symbols, we propose two distinct approaches to performing noncoherent demodulation of DDPSK. We demonstrate good error performance and good iterative decoding convergence behavior by means of simulation and extrinsic information transfer (EXIT) charts.
キーワード(和)
キーワード(英)
資料番号 IT2006-18
発行日

研究会情報
研究会 IT
開催期間 2006/5/18(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 Information Theory (IT)
本文の言語 ENG
タイトル(和)
サブタイトル(和)
タイトル(英) Serially Concatenated Doubly Differential PSK for Improved Noncoherent Iterative Detection(HISC2006)
サブタイトル(和)
キーワード(1)(和/英)
第 1 著者 氏名(和/英) / Marcin Sikora
第 1 著者 所属(和/英)
Department of Electrical Engineering University of Notre Dame
発表年月日 2006-05-25
資料番号 IT2006-18
巻番号(vol) vol.106
号番号(no) 60
ページ範囲 pp.-
ページ数 5
発行日