PAPR Reduction of OFDM Signals by Novel Global Harmony Search in PTS Scheme

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.

[1]  M. Lixia,et al.  Peak-to-average power ratio reduction in multi-carrier system using genetic algorithms , 2011 .

[2]  Yajun Wang,et al.  A PAPR Reduction Method Based on Artificial Bee Colony Algorithm for OFDM Signals , 2010, IEEE Transactions on Wireless Communications.

[3]  Jianhua Ge,et al.  Peak-to-Average Power Ratio Reduction of OFDM Signals Using PTS Scheme With Low Computational Complexity , 2011, IEEE Transactions on Broadcasting.

[4]  Yung-Fa Huang,et al.  A Suboptimal PTS Algorithm Based on Particle Swarm Optimization Technique for PAPR Reduction in OFDM Systems , 2008, EURASIP J. Wirel. Commun. Netw..

[5]  Tao Jiang,et al.  A Novel Constellation Reshaping Method for PAPR Reduction of OFDM Signals , 2011, IEEE Transactions on Signal Processing.

[6]  Ju Liu,et al.  PAPR Reduction of OFDM Signals by PTS With Grouping and Recursive Phase Weighting Methods , 2011, IEEE Transactions on Broadcasting.

[7]  Miin-Jong Hao,et al.  Precoding for PAPR Reduction of OFDM Signals With Minimum Error Probability , 2010, IEEE Transactions on Broadcasting.

[8]  Dexuan Zou,et al.  A novel global harmony search algorithm for reliability problems , 2010, Comput. Ind. Eng..

[9]  Hojjat Salehinejad,et al.  PAPR reduction of OFDM signals using harmony search algorithm , 2011, 2011 18th International Conference on Telecommunications.

[10]  Nelson Sollenberger,et al.  Peak-to-average power ratio reduction of an OFDM signal using partial transmit sequences , 2000, IEEE Communications Letters.

[11]  Suvepon Sittichivapak,et al.  Application of power line communication with OFDM to smart grid system , 2011, 2011 Eighth International Conference on Fuzzy Systems and Knowledge Discovery (FSKD).

[12]  M. Fesanghary,et al.  An improved harmony search algorithm for solving optimization problems , 2007, Appl. Math. Comput..

[13]  Jae Hong Lee,et al.  An overview of peak-to-average power ratio reduction techniques for multicarrier transmission , 2005, IEEE Wireless Communications.

[14]  J. Huber,et al.  OFDM with reduced peak-to-average power ratio by optimum combination of partial transmit sequences , 1997 .

[15]  Chintha Tellambura,et al.  Cross-Entropy-Based Sign-Selection Algorithms for Peak-to-Average Power Ratio Reduction of OFDM Systems , 2008, IEEE Transactions on Signal Processing.

[16]  Mahamed G. H. Omran,et al.  Global-best harmony search , 2008, Appl. Math. Comput..

[17]  Jae Hong Lee,et al.  PAPR reduction of OFDM signals using a reduced complexity PTS technique , 2004, IEEE Signal Processing Letters.