The Modeling and Equalization Technique of Nonlinear Wireless Channel

ABSTRACT

In this paper, we have considered a new method for modeling and equalizing of nonlinear wireless channel. The Volterra structure equalizer has high computation burden and slow convergence rate due to its large number of coefficients and the pre-distortion method is very difficult to realize in actual wireless communication systems. Here, we have taken another scheme instead of those mentioned above. First, it is assumed that the nonlinear channel under consideration has a Wiener model representation. After fully estimating the parameters of the channel, which consist of a linear filter with memory and a nonlinear filter without memory, we took Hammerstein model equalizer to equalize the channel. The simulation results show the feasibility of the program by applying it to 8PSK wireless communication channel.

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