Performance of an M-QAM full-duplex wireless system with a nonlinear amplifier

被引：2
作者：
He, Zhaojun [1 ]
Ma, Wanzhi [1 ]
Shao, Shihai [1 ]
Wu, Fei [1 ]
Qing, Chaojin [2 ]
Tang, Youxi [1 ]
机构：
[1] Univ Elect Sci & Technol China, Natl Key Lab & Technol Commun, Chengdu 611731, Peoples R China
[2] Xihua Univ, Sch Elect & Informat Engn, Chengdu 6110039, Peoples R China
来源：
SCIENCE CHINA-INFORMATION SCIENCES | 2016年 / 59卷 / 10期
基金：
中国国家自然科学基金;
关键词：
full-duplex; amplifier nonlinear distortion; bit error ratio; amplitude error; phase error; CANCELLATION; SPECTRUM; DESIGN;
D O I：
10.1007/s11432-015-5370-2
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The effect of amplifier nonlinearity is analyzed for M-QAM full-duplex communications in additive white Gaussian noise channels. Two classical memoryless nonlinear amplifier models, i.e., a traveling-wave tube amplifier and a solid-state power amplifier, are considered. An analytical expression for the bit error ratio is derived using a characteristic function and numerical integration. Theoretical results show perfect agreement with those obtained by simulation. The analytical results could be used to evaluate the degradation in performance of an M-QAM full-duplex system caused by amplifier nonlinearity, and will be helpful in finding the optimal static operating point of an amplifier.
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页数：9
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