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Harmony Search Algorithm Based Nearly Optimal Peak Reduction Tone Set Selection for PAPR Reduction in OFDM System

  • Jong-Shin Chen
  • Ho-Lung Hung
  • Yung-Fa Huang
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8398)

Abstract

This paper considers the use of the tone reservation (TR) technique to reduce the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) signal. In the TR scheme, a small number of unused subcarriers called peak reduction carriers (PRCs) are reserved to reduce the PAPR and the goal of the TR scheme is to find the optimal values of the PRCs that minimize the PAPR of the transmitted OFDM signal. The conventional TR technique can provide good PAPR reduction performance for OFDM signals; however, it requires an exhaustive search over all combinations of allowed PRC set, resulting in high complexity. In this paper, the harmony research (HS) algorithm is applied to search the optimal combination of PRC, which can significantly reduce the computational complexity and offers lower PAPR at the same time. Simulation results show that the TR based on HS algorithm can achieve the good tradeoff between PAPR reduction performance and computational complexity.

Keywords

Orthogonal frequency division multiplexing Harmony search algorithm Peak-to-average power ratio reduction Tone reservation 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Jong-Shin Chen
    • 1
  • Ho-Lung Hung
    • 2
  • Yung-Fa Huang
    • 3
  1. 1.Department of Information and Communication EngineeringChaoyang University of TechnologyTaichungTaiwan
  2. 2.Department of Electrical EngineeringChien-Kuo Technology UniversityChanghuaTaiwan
  3. 3.Department of Information and Communication EngineeringChaoyang University of TechnologyTaichungTaiwan, R.O.C.

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