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Peak power reduction for OFDM systems with orthogonal pilot sequences

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Author

Summary, in English

In this paper, a novel peak-to-average power reduction approach for orthogonal frequency division multiplexing (OFDM) has been addressed. Two-dimensional pilot-symbol assisted modulation (2D-PSAM) is employed in coherent OFDM for channel estimation, and it is based on inserting known symbols spread throughout the 2D time-frequency grid. These pilot symbols are employed to simultaneously perform distortionless peak power reduction with a suboptimum technique named orthogonal pilot sequences (OPS), which reduces additional system complexity and side information compared to optimum pilot values. This proposal attains a further step over other previous works, since this set of sequences allows blind detection at the receiver without prior knowledge of any side information.

Publishing year

2006

Language

English

Pages

47-51

Publication/Series

IEEE Transactions on Wireless Communications

Volume

5

Issue

1

Document type

Journal article

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • peak-to-average power
  • OFDM
  • pilot symbols

Status

Published

ISBN/ISSN/Other

  • ISSN: 1536-1276