Title :
Performance Analysis of Clipping in OFDM Predistortion
Author :
Wang Jingyi ; Li Bo
Author_Institution :
State Key Lab. .of Integrated Service Networks, Xidian Univ., Xi´an, China
Abstract :
The predistortion is described firstly, then a summary of clipping technology is followed, the analysis of clipping´s influence on predistortion is provided lastly in this paper. Through analysis and simulation, following ideas are pointed out: As for TWTA power amplifier model, clipping cannot improve the predistortion performance, while too large clipping will influence predistortion effect. In view of memory polynomial model, clipping could not improve predistortion performance at large, but proper clipping can get little improvement of predistortion performance.
Keywords :
OFDM modulation; channel estimation; limiters; nonlinear distortion; power amplifiers; travelling wave amplifiers; OFDM predistortion; TWTA power amplifier model; clipping; memory polynomial model; Bandwidth; Baseband; Broadband amplifiers; Feedback; OFDM; Performance analysis; Polynomials; Power system modeling; Predistortion; Radio frequency;
Conference_Titel :
Information Science and Engineering (ICISE), 2009 1st International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-4909-5
DOI :
10.1109/ICISE.2009.826
