摘要
非线性移动通信系统的准确调制可以提高信道盲均衡性能,改善通信质量。传统的信道调制算法采用非线性滚动预测方法,对非线性移动通信系统的谐波平衡效果不好。提出一种基于PSK控制盲分离技术的非线性移动通信系统的信道调制算法。构建非线性移动通信系统的信道模型,设计键控移相PSK控制盲分离算法,计算PSK控制盲调制解析信号的包络和相位,消除多径干扰,实现信道均衡。仿真结果表明,采用该算法进行信道调制,信道模型多径时延差小于一个码元宽度的情况下,移动通信信号的信道均衡起伏较为平稳,有效降低了通信系统的误码率,提高通信质量。
Accurate nonlinear modulation of the mobile communication system can improve the performance of channel blind equalization, improve communication quality. The traditional channel modulation algorithm using nonlinear rolling prediction method, harmonic balance nonlinear effect is not good for mobile communication system. We propose a nonlin-ear mobile communication system PSK control blind source separation algorithm based on channel modulation. Construc-tion of the nonlinear channel model of mobile communication system, the design of phase shift keying PSK control blind separation algorithm, calculation of PSK amplitude and phase modulation control blind analytic signal, eliminate multipath interference, realize channel equalization. The simulation results show that, by using the algorithm of channel modulation, channel model of multipath delay difference is smaller than a symbol width, channel equalization and mobile communica-tion signal is relatively stable, effectively reduces the error rate of the communication system, improve the quality of commu-nication.
出处
《科技通报》
北大核心
2015年第12期141-143,共3页
Bulletin of Science and Technology
关键词
非线性
移动通信系统
信道调制
nonlinear system
mobile communication
channel modulation
