Peak power reduction method based on structure of parity-check matrix for LDPC coded OFDM transmission

Osamu Muta, Yoshihiko Akaiwa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

In this paper, we propose a peak power reduction method for LDPC coded OFDM system, where transmit data sequence is grouped into several clusters based on structure of a low density parity-check matrix and the phase of each cluster is adjusted so as to minimize PAPR of OFDM signal by multiplying weighting factors (WFs). At the receiver, WFs are estimated with sufficient accuracy by exploiting the decoding property of LDPC code. The proposed method can be applied to not only systematic coded signal but also non-systematic one. Computer simulation results show that, when LDPC code with code-rate of R ≈ 1/2 is used, PAPR of OFDM signal can be reduced by about 2.4dB without significant degradation in BLER performance as compared to perfect WF estimation in attenuated 12-path Rayleigh fading condition.

Original languageEnglish
Title of host publication2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
Pages2841-2845
Number of pages5
DOIs
Publication statusPublished - Aug 2 2007
Event2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring - Dublin, Ireland
Duration: Apr 22 2007Apr 25 2007

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

Other2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring
CountryIreland
CityDublin
Period4/22/074/25/07

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All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Cite this

Muta, O., & Akaiwa, Y. (2007). Peak power reduction method based on structure of parity-check matrix for LDPC coded OFDM transmission. In 2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring (pp. 2841-2845). [4213011] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECS.2007.583