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| Wideband Adaptive Predistortion Algorithm Based on LUT and Memory-effect Compensation Techniques |
| Hu Xin①③ Wang Gang② Wang Zi-cheng② Luo Ji-run① |
①(Key Laboratory of High Power Microwave sources and Technologies, Institute of Electronics, Chinese Academy of Siences, Beijing 100190, China)
②(Space Traveling Wave Tube Research and Development Center, Institute of Electronics, Chinese Academy of Sciences, Beijing 100190, China)
③(Graduate University of Chinese Academy of Sciences, Beijing 100039, China) |
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Abstract To obtain the good performance for linearization, a digital predistortion algorithm is presented. Look-Up-Table (LUT) and memory-effect compensation techniques is combed, and the linear interpolation method is applied to the LUT. Compared to memory polynomial methods, this predistortion technique can reduce the complexity of calculation and obtain the good performance for linearization. Under power amplifier’s memory polynomial model, the simulation results for Orthogonal Frequency Division Multiplexing (OFDM) wideband signal show the excellent linearization purpose for memory nonlinear power amplifier.
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Received: 29 June 2011
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Corresponding Authors:
Hu Xin
E-mail: huxinhust@126.com
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2012, Vol. 34 
