Iterative decoding of iterative clipped and filtered OFDM signal

Igor Gutman, Ilia Iofedov, Dov Wulich

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

A communication system with non-linear power amplifier (PA) is considered. We introduce three major performance criteria of the system: (i) power efficiency of the PA, (ii) spectral purity of the transmitted signal expressed by adjacent channel interference, and (iii) transmission performance expressed by mutual information or symbol error rate. In order to fulfill the first two criteria it is proposed to use iterative clipping and filtering (ICF) at the transmitter together with low input back-off, while the third criterion is obtained by modified iterative receiver (MIR). The proposed MIR is based on the well-known iterative receiver, but with ICF in the feedback path. The obtained results show that the proposed system is better than its competitors when considering the three performance criteria together. The analysis and results are focused on OFDM; however, the proposed approach may be applied to single carrier.

Original languageEnglish
Article number6600708
Pages (from-to)4284-4293
Number of pages10
JournalIEEE Transactions on Communications
Volume61
Issue number10
DOIs
StatePublished - 1 Oct 2013

Keywords

  • Multicarrier systems
  • non-linear channel
  • performance
  • power amplifier

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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