naa a22 4500 510791573 CHVBK 20180411083321.0 cr unu---uuuuu 180411e20130701xx s 000 0 eng 10.1007/s11277-012-0836-7 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0836-7 Novel Low-Complexity Partial Transmit Sequences Scheme for PAPR Reduction in OFDM Systems Using Adaptive Differential Evolution Algorithm [Elektronische Daten] [Chien-Erh Weng, Chuan-Wang Chang, Chuang-Hsien Chen, Ho-Lung Hung] A low-complexity partial transmit sequence (PTS) technique for reducing the peak-to-average power ratio (PAPR) of an orthogonal frequency division multiplexing signal is presented. However, the conventional PTS scheme requires an exhaustive searching over all combinations of allowed phase factors. Consequently, the computational complexity increases exponentially with the number of the subblocks. This paper presents a novel approach to the PAPR problem to reduce computational complexity based on the relationship between phase weighing factors and transmitted bit vectors. In this paper, we aim to obtain the desirable PAPR reduction with the low computational complexity. Since the process of searching the optimal phase factors can be categorized as combinatorial optimization with some variables and constraints, we propose a novel scheme, which is based on a stochastic optimization technique called modified differential evolution, to search the optimal combination of phase factors with low complexity. To validate the analytical results, extensive simulations have been conducted, showing that the proposed schemes can achieve significant reduction in computational complexity while keeping good PAPR reduction. Springer Science+Business Media, LLC., 2012 Orthogonal frequency division multiplexing (OFDM) nationallicence Peak-to-average power ratio (PAPR) reduction nationallicence Partial transmit sequence (PTS) nationallicence Differential evolution (DE) algorithm nationallicence Weng Chien-Erh Department of Electronic Communication Engineering, National Kaohsiung Marine University, No.142, Haijhuan Rd., Nanzih District, 81157, Kaohsiung City, Taiwan, ROC aut Chang Chuan-Wang Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan aut Chen Chuang-Hsien Metal Industries Research and Development Centre, Taichung City, Taiwan, ROC aut Hung Ho-Lung Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan aut Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 679-694 0929-6212 71:1<679 2013 71 11277 https://doi.org/10.1007/s11277-012-0836-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0836-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Weng Chien-Erh Department of Electronic Communication Engineering, National Kaohsiung Marine University, No.142, Haijhuan Rd., Nanzih District, 81157, Kaohsiung City, Taiwan, ROC aut NATIONALLICENCE 700 1- Chang Chuan-Wang Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan aut NATIONALLICENCE 700 1- Chen Chuang-Hsien Metal Industries Research and Development Centre, Taichung City, Taiwan, ROC aut NATIONALLICENCE 700 1- Hung Ho-Lung Department of Electrical Engineering, Chienkuo Technology University, Changhua City, Taiwan aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 71/1(2013-07-01), 679-694 0929-6212 71:1<679 2013 71 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer