講演名 2008/10/30
PAPR reduction and Pre-distortion techniques against Non-linear Distortion of Satellite WiBro(Transmission Technology)
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抄録(和)
抄録(英) A major drawback of Orthogonal Frequency Division Multiplexing (OFDM) system is high peak-to-average power ratio (PAPR) of the transmitted signal which introduces inevitable non-linear distortion in the transmission due to the amplifier non-linear property. This causes both in-band distortion and out of band spectrum re-growth. A polynomial based pre-distortion is estimated using the non-linear and inverse non-linear polynomial achieved through the Least Square Error (LSE) method. A new technique of PAPR reduction called 'Phase Realignment' (PR) is proposed which has a optimal effect in improving the BER performance as well as considerable reduction in the PAPR. In this paper we used the PR method along with the 'Peak Clipping' (PC) method is used before the pre-distortion to remove the high peak present in the non constant amplitude of the OFDM signal responsible to drive the amplifier in near saturation region for better performance of the system.
キーワード(和)
キーワード(英) Satellite WiBro / OFDM / LSE / Phase Realignment / Pre-distortion
資料番号 SAT2008-40
発行日

研究会情報
研究会 SAT
開催期間 2008/10/30(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) PAPR reduction and Pre-distortion techniques against Non-linear Distortion of Satellite WiBro(Transmission Technology)
サブタイトル(和)
キーワード(1)(和/英) / Satellite WiBro
第 1 著者 氏名(和/英) / Robin Shrestha
第 1 著者 所属(和/英)
School of Information and Telecommunication Engineering, Korea Aerospace University
発表年月日 2008/10/30
資料番号 SAT2008-40
巻番号(vol) vol.108
号番号(no) 274
ページ範囲 pp.-
ページ数 10
発行日