volume | PIER Journals

Abstract

In this paper, a novel behavioral model for the receiver front-end is presented. This model allows the accurate prediction of the nonlinear effects of the receiver front-end including the in-band distortion, intermodulation and harmonic generation. The behavioral model is a block-oriented model that consists of three blocks, the frequency conversion block, nonlinear block， and memory linear block. The nonlinear block and memory linear block are represented by the polynomials in time domain respectively, which can characterize the high-order nonlinearities and the strong memory effects by the appropriate adjustment of the polynomial order. An original model parameter identification procedure that can efficiently estimate the model parameters by using the specific input-output data is also proposed. Moreover, the presented behavioral model and identification procedure are assessed by the experiment with the excitation of single-tone signals, multitone signals and WCDMA signals, respectively. The comparison between the measurement and model simulation suggests that the behavioral model has good accuracy of the prediction of the nonlinear effects of the receiver front-end.

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Dr. Chongchong Chen

Dr. Hongmin Lu

Dr. Yu Zhang

Dr. Guangshuo Zhang