Effects of PAPR reduction based on peak limiter in IEEE802.16e based OFDM system

Yu Takase, Osamu Muta, Yoshihiko Akaiwa

Research output: Contribution to journalArticlepeer-review

Abstract

A major drawback in OFDM systems is that the transmitsignal exhibits a high Peak-to-Average Power Ratio (PAPR) which causes nonlinear distortion at the output of power amplifier. To achieve high efficiency in OFDM systems, it is important to suppress PAPR of the transmit signal. In IEEE802.16e (mobile WiMAX) based systems, it is desirable to employ a simple PAPR reduction method such as clipping & filtering (C&F) or peak windowing (PW). The purpose of this paper is to evaluate PAPR reduction performance of C&F and PW and compare them in an IEEE802.16e based OFDM system. In addition, we also show a repeated PW method which reduces PAPR by repeatedly applying a smooth window function to the transmit signal. Computer simulation results show that the repeated PW can achieve almost the same PAPR reduction performance as that of the repeated C&F with significantly lower computational complexity.

Original languageEnglish
Pages (from-to)1467-1471
Number of pages5
JournalIEICE Transactions on Communications
VolumeE94-B
Issue number5
DOIs
Publication statusPublished - May 2011

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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