Adaptive Peak-to-average Power Ratio Reduction Method for Prolate Spheroidal Wave Function Orthogonal Modulation Signal
WANG Hongxing LU Faping LIU Chuanhui LIU Xiao
(Department of Electrical and Information Engineering, Naval Aeronautical and Astronautical University, Yantai 264001, China)
(Key Laboratory on Signal & Information Processing of Shandong Provience, Yantai 264001, China)
A new companding transform based on μ-law companding schemes is proposed for the reduction of Peak-to-Average Power Ratio (PAPR) of Prolate Spheroidal Wave Function (PSWF) orthogonal modulation signal, which causes serious degradation in performance when a nonlinear Power Amplifier (PA) is used. According to the input signal, the method adjusts the compression parameters automatically, which can guarantee the average signal power constant before and after compression, compression signal peak. Both the mathematical deduction and simulation results show that the proposed method can effectively reduce PAPR of PSWF orthogonal modulation signal, and effectively improve the power spectrum density of the signal and the BER performance of system under AWGN channel. The PAPR of compressed modulation signal decrease about 2.1 dB in comparison to the original modulation signal, when the parameter μ=1 and Complementary Cumulative Distribution Function CCDF=10-4.
王红星，陆发平，刘传辉，刘晓. 一种椭圆球面波调制信号自适应峰均比抑制方法[J]. 电子与信息学报, 2017, 39(1): 75-81.
WANG Hongxing, LU Faping, LIU Chuanhui, LIU Xiao. Adaptive Peak-to-average Power Ratio Reduction Method for Prolate Spheroidal Wave Function Orthogonal Modulation Signal. JEIT, 2017, 39(1): 75-81.
ZHAO Z Y, WANG H X, LIU X G, et al. Orthogonal prolate spheroidal wave functions modulation method[J]. Journal of Electronics & Information Technology, 2012, 34(10): 2331-2335. doi: 10.3724/SP.J.1146.2012.00384.
[3]
OSIPOVE A and ROKHLIN V. On the evaluation of prolate spheroidal wave functions and associated quadrature rules[J]. Appliedand Computational Harmonic Analysis, 2014, 36(1): 108-142. doi:10.1016/j.acha.2013.04.002.
SHU G C and WANG H X. Method of reducing PAR of non-sinusoidal modulated signals based on PSWF[J]. Radio Communications Technology, 2011, 37(1): 22-24.
CHEN Z N, WANG H X, ZHONG P L, et al. The PAPR reduction method for PSWF based on givens rotation transformation[J]. Journal of Electronics & Information Technology, 2013, 35(6): 1406-1412. doi: 10.3724/SP.J. 1146.2012.01221.
[7]
WANG X B, TJHUNG T, and NG C S. Reduction of peak-to-average power ratio of OFDM system using a companding technique[J]. IEEE Transactions on Broadcasting, 1999, 45(3): 303-307. doi: 10.1109/11.796272.
[8]
HUANG X, LU J, ZHENG J L, et al. Reduction of peak-to-average power ratio of OFDM signals with using companding transform[J]. Electronics Letters, 2001, 37(8): 506-507. doi: 10.1049/el:20010345.
[9]
SAKRAN H, SHOKAIR M, and ELAXM A. A new peak-to-average power reduction technique in the OFDM system usingμ-law compander[C]. IEEE International Symposium on Wireless Communication Systems (ISWCS), Regkjavik, Iceland, 2008: 386-390. doi: 10.1109/ISWC.S, 2008.4726083.
[10]
HASHIM S J, ABAS A F, VARAHRAM P, et al. Reduction of peak to average power ratio in coherent optical orthogonal frequency division multiplexing using companding transform[C]. Region 10 Symposium, Kuala Lumpur, Malaysian, 2014: 177-180. doi: 10.1109/TENCONSpring.2014.6863020.
[11]
ANJAIAH C, PRASAD P, and KTISHNA H. Mu-law companded PTS for PAPR reduction in OFDM systems[C]. IEEE International Conference on Electrical, Computer and Communication Technologies (ICECCT), Coimbatore, India, 2015: 1-4. doi: 10.1109/ICECCT.2015.7226139.
[12]
CHANDRASEKHAR R, KAMARAJU M, SAIRAM M V S, et al. PAPR reduction using combination of precoding with Mu-law companding technique for MIMO-OFDM systems[C]. IEEE International Conference on Communications and Signal Processing, Melmaruvathur, India, 2015: 0479-0483. doi: 10.1109/ICCSP.2015.7322430.
[13]
SALEH A A M. Frequency-independent and frequency- dependent nonlinear models of TWT amplifiers[J]. IEEE Transactions on Communications, 1981, 29(11): 1715-1720. doi: 10.1109/TCOM.1981.1094911.
YANG C, WANG Y, and GE J H. Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals[J]. Journal on Communications, 2015, 36(4): 2515-2520. doi: 10.3724/SP.J.1146.2013.01820.
[15]
JIANG T and WU Y Y. An overview: peak-to-average power ratio reduction techniques for OFDM signals [J]. IEEE Transactions on Broadcasting, 2011, 54(2): 257-268. doi: 10.1109/TBC.2008.915770.
