基于眼图在自适应均衡信道中的研究  

Research on eye diagram based on adaptive equalization channel

作　　者：邓国辉[1] 李金武[1] 

机构地区：[1]郑州科技学院信息工程学院,河南郑州450064

出　　处：《河南工程学院学报（自然科学版）》2015年第4期54-58,共5页Journal of Henan University of Engineering：Natural Science Edition

摘　　要：在移动通信系统中,由于码间串扰的存在影响了通信质量,所以如何减少码间串扰是通信传输面临的重要问题.在信息的接收终端选取适宜的滤波器并设立合理的特征参数,能够不同程度地减少码间串扰.数字基带信号经过滤波器后形成眼图,研究眼图张开的情况可得到码间串扰的程度和噪声的情况.因此,需要设计一个特殊的滤波器进行信道补偿,使信道与该补偿滤波器的级联特性接近,其频谱特性为常数,这就是均衡信道,用来减少码间串扰的程度和噪声的干扰,以提高通信质量.In a mobile communication system, because the existence of inter symbol interference （ISI）, the quality of communication is affected thereby, how to reduce the ISI is an important issue that the communications transmission should face. The selection of a suitable filter in the receiving information terminal and the reasonable characteristic parameters established can reduce ISI somehow. Transmission signal of the digital base band signal after the filter can form eye diagram, and the study of the opening status of eye diagram can get the situation and noise level of ISI. Therefore, we need to design a special filter for channel compensation to make the compensation close to the channel eharaeteristies of the filter. The spectral characteristics should be constant, this is the equilibrium channel. The equilibrium can reduce the interference and noise level of ISI. So the communication quality is improved.

关 键 词：眼图 码间串扰 自适应均衡 误码率 

分 类 号：TN913[电子电信—通信与信息系统]