基于自适应比特调制的无线通信信道均衡算法  

Wireless communication channel equalization algorithm based on adaptive bit modulation

作　　者：李浩[1] LI Hao(College of Computer,Henan University of Engineering,Zhengzhou 451191,China)

机构地区：[1]河南工程学院计算机学院,河南郑州451191

出　　处：《河南工程学院学报（自然科学版）》2018年第3期64-69,共6页Journal of Henan University of Engineering：Natural Science Edition

摘　　要：5G无线通信信道受到空间介质多途效应的影响,容易产生码间干扰,导致无线通信信道的均衡性不好,误码较多.为了提高5G无线通信质量,提出了一种基于自适应比特调制的无线通信信道均衡算法.根据无线通信信道的多途时变衰落特性构造信道模型,采用被动时间镜翻转技术重组多径无线通信信号,利用各多径信号的能量聚焦特性抑制码间干扰,实现信道输出端无线通信信号在同时刻同相位叠加;采用自适应比特序列调制方法获得通信信道的聚焦增益,对接收信号以波特率进行采样,使得调制脉冲冲激响应在时域和频域上同时得到扩展,实现信道均衡.仿真结果表明,采用该算法进行5G无线通信信道均衡设计,能有效抑制码间干扰,提高信号输出增益,降低通信的误码率,改善了通信质量.5G wireless communication channel is affected by muhi-path effect in space medium it is easy to produce the intersymbol interference, and causes that the equalization of wireless communication channel is not good, resuhing in high error rate. In order to improve the quality of 5G wireless communication, a wireless communication channel equalization algorithm is proposed based on the adaptive bit modulation. According to the time-varying fading property of multi-path wireless communication channel, the channel model is constructed using the passive time reversal mirror reorganization of muhipath wireless communication signals, and using the energy focusing properties suppress each multipath signal interference. The channel output signal in wireless communication at the same time with the same phase superposition is achieved. Focusing on gain communication channel using adaptive bit sequence modulation method, the received signal sampling was performed at the baud rate. The modulated pulse impulse response has been extended at the same time in the time domain and frequency domain, and the channel equalization is realized. Simulation results show that this 5G wireless communication channel equalization design can effectively suppress inter symbol interferenee, improve the signal output gain, reduce the bit error rate of communication, and improve the quality of communication.

关 键 词：自适应比特调制 5G无线通信 信道均衡 被动时间镜反转 

分 类 号：TN911[电子电信—通信与信息系统]