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 language | English (US) |
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Pages (from-to) | 166 |
Number of pages | 1 |
Journal | IEEE International Symposium on Information Theory - Proceedings |
State | Published - 2000 |
Event | 2000 IEEE International Symposium on Information Theory - Serrento, Italy Duration: Jun 25 2000 → Jun 30 2000 |
ASJC Scopus subject areas
- Theoretical Computer Science
- Information Systems
- Modeling and Simulation
- Applied Mathematics