Liu. Sheng

Work place: College of Management, Shanghai University of Engineering Science, Shanghai, 201620 China



Research Interests:


Liu. Sheng was born in 1966. he received her M.S. degree in computer science from Huazhong University of Science and Technology in 1999, and his Ph.D. degree in computer science from East China University of Science and Technology in 2008.

Her research interests include intelligent information processing and evolutionary computing. He now works in Shanghai University of Engineering Science as a professor.

Author Articles
The Simulation Analysis of Nonlinear for a Power Amplifier with Memory Effects

By Lv. Jinqiu You. Xiaoming Liu. Sheng

DOI:, Pub. Date: 8 Sep. 2014

For the nonlinear distortion problem of current power amplifiers (PAs) with memory effects, we use goal programming to present a memoryless predistorter matrix model based on limiting baseband predistortion technique, and the normalized mean squared error (NMSE) is limited in a satisfactory range while the output power is maximum. Then we propose a nonlinear power amplifier with memory effects based on back propagation neural network (BPNN) with three tapped delay nodes and six single hidden layer nodes, which is single input - dual output. Simulation results show that the method proposed in this paper makes the experimental precision higher. Further, the linearization effect of power amplifiers becomes better.

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