A Suboptimal PTS Algorithm Based on Particle Swarm Optimization Technique for PAPR Reduction in OFDM Systems

A suboptimal partial transmit sequence (PTS) based on particle swarm optimization (PSO) algorithm is presented for the low computation complexity and the reduction of the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In general, PTS technique can...

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Bibliographic Details
Published inEURASIP journal on wireless communications and networking Vol. 2008; no. 1; p. 601346
Main Authors Wen, Jyh-Horng, Shu-Hong, Lee, Huang, Yung-Fa, Ho-Lung, Hung
Format Journal Article
LanguageEnglish
Published New York Springer Nature B.V 01.01.2008
BioMed Central Ltd
SpringerOpen
Subjects
Expected values
Methods
Optimization algorithms
Studies
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Summary:A suboptimal partial transmit sequence (PTS) based on particle swarm optimization (PSO) algorithm is presented for the low computation complexity and the reduction of the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing (OFDM) system. In general, PTS technique can improve the PAPR statistics of an OFDM system. However, it will come with an exhaustive search over all combinations of allowed phase weighting factors and the search complexity increasing exponentially with the number of subblocks. In this paper, we work around potentially computational intractability; the proposed PSO scheme exploits heuristics to search the optimal combination of phase factors with low complexity. Simulation results show that the new technique can effectively reduce the computation complexity and PAPR reduction.
ISSN:1687-1472
1687-1499
1687-1499
DOI:10.1186/1687-1499-2008-601346