PAPR reduction and Pre-distortion techniques against Non-linear Distortion of Satellite WiBro(Transmission Technology)

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概要

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• 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.

• 2008-10-30

著者

• Shrestha Robin

  School of Information and Telecommunication Engineering, Korea Aerospace University

• Seo Myung

  School of Information and Telecommunication Engineering, Korea Aerospace University

• Go Gyeong

  Korea Aerospace Univ.

• Lee Byung

  Korea Aerospace Univ.

• Shrestha Robin

  School Of Information And Telecommunication Engineering Korea Aerospace University

• Seo Myung

  School Of Information And Telecommunication Engineering Korea Aerospace University

• Lee Byung

  Korea Advanced Institute Of Science And Technology

関連論文

• PAPR reduction and Pre-distortion techniques against Non-linear Distortion of Satellite WiBro(Transmission Technology)
• ICONE11-36095 A STUDY ON THE TEMPERATURE DISTRIBUTION IN THE HOT LEG PIPE
• AN EFFICIENT ALGORITHM FOR THE NONPARAMETRIC REGRESSION ESTIMATION

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