Title :
Multi-Carrier TD-SCDMA Power Amplifier Linearization with a Memory Polynomial Predistorter
Author :
Hui, Ming ; Liu, Taijun ; Ye, Yan ; Zhang, Juan ; Shen, Dongya
Author_Institution :
Coll. of Inf. Sci. & Eng., Ningbo Univ., Ningbo, China
Abstract :
In this paper, digital pre-distorter based on the memory polynomial model is utilized to compensate the nonlinearity of the Multi-Carrier TD-SCDMA RF power amplifiers (RFPA). Three-carrier TD-SCDMA signals with three different sub-frame configurations are used as test signals, a 47-dBm peak-envelope-power LDMOS power amplifier is designed to validate the performance of the pre-distorter. The digital pre-distorter is built in Advanced Design System (ADS) and applied to the test signal. It was found that the training data sequences may seriously affect the linearization performance of a digital pre-distorter for a TD-SCDMA system.
Keywords :
MOS analogue integrated circuits; code division multiple access; power amplifiers; radiofrequency amplifiers; ADS; advanced design system; memory polynomial digital pre-distorter; multicarrier TD-SCDMA RF power amplifier linearization; multicarrier TD-SCDMA RFPA linearization; peak-envelope-power LDMOS power amplifier; subframe configuration; three-carrier TD-SCDMA signal; training data sequence; Computational modeling; Mathematical model; Polynomials; Power amplifiers; Radio frequency; Time division synchronous code division multiple access; Training;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6036664
