摘要
大型网络通信系统中受到不同信道数据流的码间干扰,导致通信系统产生非线性失真,网络通信的误比特率较高,需要进行稳定性控制。传统方法采用负信号消波抑制方法进行稳定性控制,随着信号源发出的数据流的增长,对通信系统非线性失真抑制性能改善受限。提出一种基于子载波调制动态补偿的强干扰下大型网络通信系统稳定性控制方法,构建大型网络通信系统的信道模型,采用幅度均衡、相位均衡和时延均衡联合控制方法,进行信道均衡设计,采用子载波调制动态补偿进行抗干扰设计,选择适当的相位因子补偿系数,使得峰值平均功率比最优,通过子载波调制动态补偿最大程度抑制非线性失真,提高网络通信系统的稳定性。仿真结果表明,采用该算法进行网络通信信号采集和信道均衡设计,输出信号的冲击响应增益较高,提高了抗干扰能力,具有较好的信道均衡能力,提高了抗干扰能力,在进行网络通信中,较低误码率,比传统方法优越。
The large network communication system is interferenced by different channel data flow of inter-symbol, which leads to a nonlinear distortion and higher bit error rate （BER） of network communication system, so stability control is needed. In the traditional method, the negative signal suppression method is used to control the stability, and the nonlinear distortion of the communication system is limited by the data flow. A control method is proposed based on sub cartier modulation dynamic compensation under strong interference large network communication system stability, and the large-scale network communication system channel model is constructed, using amplitude equalization and phase equalization and delay equalization combined control method, the design of channel equalization, sub carrier modulation dynamic compensation adopts anti interference design, chooses the appropriate phase compensation factor coefficient, which make the peak to average power ratio optimal. The stability of the network communication system is improved by compensating the maximum degree of the sub carrier modulation dynamics. Simulation results show that the algorithm has higher gain of output signal response, better ability for channel estimation and equalization and lower BER in network communication, improves the anti-jamming ability, and is superior to the traditional method.
出处
《控制工程》
CSCD
北大核心
2015年第6期1161-1165,共5页
Control Engineering of China
基金
国家自然科学基金(61547854)
关键词
网络通信
信号
稳定性控制
干扰
Network communication
signal
stability control
interference
