基于压缩感知的欠采样预失真研究

doi:10.11959/j.issn.1000-436x.2016221

摘要/Abstract

摘要：

为解决欠采样行波管功率放大器（TWTA）预失真问题，一般工程上采用查找表结合间接学习结构数字预失真方法，但是系统复杂度在一定程度上会增加。针对这种工程问题，提出了一种基于压缩感知技术的欠采样预失真技术，在简化系统实现、提高工作稳定性的同时，可以获得较好的非线性失真优化效果。

关键词: 压缩感知, 非线性失真, 欠采样, 基带预失真

Abstract:

In order to improve the TWTA digital predistortion linearizer with relatively low sampling frequency, the LUT and indirect learning architecture were used, which was cumbersome. A digital predistortion linearizer with compressed sensing technology was presented, which can provide good linearity improvement with simple and stable way.

Key words: compressed sensing, nonlinear distortion, low sampling frequency, base-band predistortion

胡欣,王健康,刘飞,欧连军,梁君,王刚,罗积润. 基于压缩感知的欠采样预失真研究[J]. 通信学报, 2016, 37(11): 74-79.

Xin HU,Jian-kang WANG,Fei LIU,Lian-jun OU,Jun LIANG,Gang WANG,Ji-run LUO. Research of compressed sensing for predistortion with relatively low sampling frequency[J]. Journal on Communications, 2016, 37(11): 74-79.

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参考文献 16

[1]	GRAY R , KATS A , DORVAL R . Advances in millimeter-wave lin-earization[C]// 13th Ka Broadband Communication Conference. Torino, Italy, 2007:76-79.
[2]	ABDUSSALAM N B . Performance evaluation of APK modulation for nonlinear satellite communication channel[C]// 2009 Second Interna-tional Conference on Computer and Electrical Engineering. Dubai, United Arab Emirates, 2009:524-528.
[3]	QIN C , CHANG T H , LIU L T . A modified adaptive pre-distorter for power amplifier in OFDM system[C]// 2010 International Conference on Communications and Mobile Computing. Shenzhen, China, 2010:393-397.
[4]	DING L , ZHOU G T , MORGAN D R , et al. A robust digital baseband predistorter constructed using memory polynomials[J]. IEEE Transac-tions on Communication, 2014,52(3):159-164.
[5]	BEIKMIRZA M , MIRZAVAND R , MOHAMMADI A . Power am-plifier linearization using digital predistortion and multi-port tech-niques[J]. IET Science Measurement Technology, 2016,21(3):131-136.
[6]	ALBERTO M , BHAVANI S M , BJORN O . Joint predistortion and PAPR reduction in multibeam satellite systems[C]// IEEE International Conference on Communications. Kuala Lumpur, Malaysia, 2016:255-261
[7]	PIAZZA R , MYSORE R R B S , OTTERSTEN B . Multi-gateway data predistortion for non-linear satellite channels[J]. IEEE Transactions on Communications, 2015,63(10):1-2.
[8]	KIM J , KONSTANTINOU K . Digital predistortion of wideband sig-nals based on power amplifier model with memory[J]. Electron Letters, 2012,37(23):1417-1418.
[9]	ZHU F , ANTTILA L , ABDELAZIZ M , et al. Frequency-selective digital predistortion for unwanted emission reduction[J]. IEEE Trans-actions on Communications, 2015,1(1):254-267.
[10]	TANG Y , QUAN X , SHAO S , et al. Digital predistortion architecture with reduced ADC dynamic range[J]. Electronics Letters, 2016,2(1):20-22.
[11]	HU X , WANG G , WANG Z C , et al. Research and application of combining LUT and memory compensation for TWTA lin-earization[J]. Progress In Electromagnetics Research C, 2012,29(1):177-190.
[12]	HELAOUI M , BOUMAIZA S , GHAZEL A . Power and efficiency enhancement of 3G multicarrier amplifiers using digital signal proc-essing with experiment validation[J]. IEEE Transactions on Micro-wave Theory and Techniques, 2013,54(4):1396-1404.
[13]	胡欣，王刚，王自成，等．射频预失真器与基带预失真算法结合对行波管功率放大器线性化改善的影响[J]. 通信学报, 2012,33(7):158-163. HU X , WANG G , WANG Z C , et al. Effect on the linearity im-provement of TWTA by combining RF predistortion linearizer and digital predistortion algorithm[J]. Journal on Communications, 2012,33(7):158-163.
[14]	胡欣，王刚，王自成，等．查找表联合记忆效应补偿技术的宽带自适应预失真算法[J]. 电子与信息学报, 2012,34(3):733-738. HU X , WANG G , WANG Z C , et al. Wideband adaptive predistortion algorithm based on LUT and memory-effect compensation tech-niques[J]. Journal of Electronics ＆ Information Technology, 2012,34(3):733-738.
[15]	ZHANG F , WANG Y , AI B . Variable step-size MLMS algorithm for digital predistortion in wideband OFDM systems[J]. IEEE Transac-tions on Consumer Electronics, 2015,61(1):10-15.
[16]	BEIDAS B F , SESHADRI R I , BECKER N . Multicarrier successive predistortion for nonlinear satellite systems[J]. IEEE Transactions on Communications, 2015,63(4):1373-1382.