Godard盲均衡算法研究

Research on Godard Blind Equalization Algorithm

信道均衡是克服码间干扰的重要措施。但是由于传统的均衡需要发送一训练序列来进行初始抽头系数的调节,这会降低通信中的有效数据传输率。盲均衡技术的提出就是为了解决这一难题。文中从盲均衡的信号模型入手,对Godard算法进行了研究与仿真,并讨论了其中的几个关键参数。

Channel equalization can be used to overcome the intersymbol interference. Conventional equalizers generally need the transmission of a training sequence known at the receiver to make equalizer learn the characteristic of the channel, ttowever, this method decreases transmission rate of useful symbols. The blind equalization can solve the problem. This paper presents the signal model of blind equalization, and then does some research and simulations on the Godard algorithm. Finally, the key parameters in Godard algorithm are discussed in the paper.