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PAPR reduction of OFDM signals by novel global harmony search in PTS scheme

Salehinejad, H ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1155/2012/940849
  3. Publisher: 2012
  4. Abstract:
  5. The orthogonal frequency division multiplexing (OFDM) modulation technique is one of the key strategies for multiuser signal transmission especially in smart grids and wind farms. This paper introduces an approach for peak-to-average power ratio (PAPR) reduction of such signals based on novel global harmony search (NGHS) and partial transmit sequence (PTS) schemes. In PTS technique, the data block to be transmitted is partitioned into disjoint subblocks, which are combined using phase factors to minimize PAPR. The PTS requires an exhaustive search over all combinations of allowed phase factors. Therefore, with respect to the fast implementation and simplicity of NGHS technique, we could achieve significant reduction of PAPR
  6. Keywords:
  7. Data blocks ; Exhaustive search ; Fast implementation ; Harmony search ; Modulation techniques ; Multiuser signals ; OFDM signal ; PAPR reduction ; Partial transmit sequence ; Peak-to-average power ratio reductions ; Phase factor ; Smart grid ; Sub-blocks ; Wind farm ; Orthogonal frequency division multiplexing ; Wind power ; Electric utilities
  8. Source: International Journal of Digital Multimedia Broadcasting ; Volume 2012 , November , 2012 ; 16877578 (ISSN)
  9. URL: http://www.hindawi.com/journals/ijdmb/2012/940849