一种椭圆球面波调制信号自适应峰均比抑制方法

王红星; 陆发平; 刘传辉; 刘晓

doi:10.11999/JEIT160139

一种椭圆球面波调制信号自适应峰均比抑制方法

doi: 10.11999/JEIT160139

基金项目:

国家自然科学基金(60772056)，山东省泰山学者建设工程专项经费基金 (ts20081130)

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- 被引次数: 0
出版历程
- 收稿日期: 2016-01-29
- 修回日期: 2016-06-29
- 刊出日期: 2017-01-19

Adaptive Peak-to-average Power Ratio Reduction Method for ProlateSpheroidal Wave Function Orthogonal Modulation Signal

Funds:

The National Natural Science Foundation of China (60772056), The Taishan Scholar Special Construction Funds Funded Project of Shandong Province (ts20081130)

摘要

摘要: 该文针对椭圆球面波(Prolate Spheroidal Wave Function, PSWF)时域正交调制信号峰均功率比过高，易受功率放大器非线性影响，造成信号失真，导致系统解调性能下降的问题，提出一种基于律压缩的自适应峰均比抑制方法。该方法能够根据输入信号自适应调节压缩参数，有效压缩信号峰值，降低PSWF调制信号峰均功率比(Peak-to-Average Power Ratio, PAPR)，同时保证压缩前后信号平均功率不变。理论论证和仿真结果表明，该方法能够有效抑制PSWF调制信号PAPR，当压缩参数为1且互补累计分布函数CCDF为10-4时，压缩后调制信号与原调制信号相比PAPR降低约2.1 dB；有效改善经过功放后调制信号功率谱和系统在高斯白噪声信道下的误码性能。
- 椭圆球面波 /
- 峰均功率比 /
- 压扩算法 /
- 输入功率回退
Abstract: A new companding transform based on-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=1 and Complementary Cumulative Distribution Function CCDF=10-4.
- Prolate Spheroidal Wave Function (PSWF) /
- Peak-to-Average Power Ratio (PAPR) /
- Companding transform /
- Input back off

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参考文献(20)

FLAMMER C. Spheroidal Wave Functions[M]. California: Stanford University Press, 1956: 16-19.

赵志勇, 王红星, 刘锡国, 等. 正交椭圆球面波函数脉冲调制方法[J]. 电子与信息学报, 2012, 34(10): 2331-2335. doi: 10.3724/SP.J.1146.2012.00384.

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.

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.

王红星, 赵志勇, 刘锡国, 等. 非正弦时域正交调制方法[P]. 中国专利, ZL200810159238.3, 2011-02-02.

WANG H X, ZHAO Z Y, LIU X G, et al. The nonsinusoidal orthogonal modulation in time domain[P]. China Patent, ZL2008159238.3, 2011-02-02.

舒根春, 王红星. 降低基于PSWF的非正弦调制信号PAR方法[J]. 信息传输与接入技术, 2011, 37(1): 22-24.

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.

陈昭男, 王红星, 钟佩琳, 等. 基于Givens旋转变换的PSWF调制信号PAPR抑制方法[J]. 电子与信息学报, 2013, 35(6): 1406-1412. doi: 10.3724/SP.J.1146.2012.01221.

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.

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.

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.

SAKRAN H, SHOKAIR M, and ELAXM A. A new peak-to-average power reduction technique in the OFDM system using-law compander[C]. IEEE International Symposium on Wireless Communication Systems (ISWCS), Regkjavik, Iceland, 2008: 386-390. doi: 10.1109/ISWC.S, 2008.4726083.

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.

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.

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.

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.

杨超, 王勇, 葛建华. 联合迭代滤波与压扩参数优化的OFDM 信号峰平比抑制[J]. 通信学报, 2015, 36(4): 2515-2520. doi: 10.3724/SP.J.1146.2013.01820.

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.

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.

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