Low-Complexity Distortionless Techniques for Peak Power Reduction in OFDM Communication Systems

Date

Jun-12

Authors

Ghassemi, A.
Gulliver, Thomas Aaron

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Journal ISSN

Volume Title

Publisher

Journal of Computer Networks and Communications

Abstract

A high peak-to-average power ratio (PAPR) is one of the major drawbacks to using orthogonal frequency division multiplexing (OFDM) modulation. The three most effective distortionless techniques for PAPR reduction are partial transmit sequence (PTS), selective mapping (SLM), and tone reservation (TR). However, the high computational complexity due to the inverse discrete Fourier transform (IDFT) is a problem with these approaches. Implementation of these techniques typically employ direct computation of the IDFT, which is not the most efficient solution. In this paper, we consider the development and performance analysis of these distortionless techniques in conjunction with low-complexity IFFT algorithms to reduce the PAPR of the OFDM signal. Recently, proposed IFFT-based techniques are shown to substantially reduce the computational complexity and improve PAPR performance.

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Citation

Ahmed, A., Pang, Y., Hajisalem, G. & Gordon, R. (2012). Antenna Design for Directivity-Enhanced Raman Spectroscopy. International Journal of Computer Networks and Communications, 2012, 13 pages. http://dx.doi.org/0.1155/2012/929763