PAR Reduction via constellation shaping

H. Kwok, D. Jones

Research output: Contribution to journalConference articlepeer-review

Abstract

In this paper, we introduce a novel scheme using a constellation shaping approach to reduce the peak-to-average ratio (PAR) in orthogonal frequency-division multiplexing (OFDM) systems. In the time domain, the peak power bound traces out a hypercube boundary. We map this square time-domain boundary back to the frequency domain via the DFT and construct a method for indexing the OFDM constellation points. The encoding and decoding of the constellation use generators and relations from group theory. The end result is a coding scheme with nearly 20 dB of PAR reduction with no reduction in data rate or performance.

Original languageEnglish (US)
Number of pages1
JournalIEEE International Symposium on Information Theory - Proceedings
StatePublished - Dec 1 2000
Event2000 IEEE International Symposium on Information Theory - Serrento, Italy
Duration: Jun 25 2000Jun 30 2000

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Information Systems
  • Modeling and Simulation
  • Applied Mathematics

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