Title :
2D orthogonal polynomials for concurrent dual-band digital predistortion
Author :
Guang Yang ; Falin Liu ; Lingli Li ; Haoyu Wang ; Caihong Zhao ; Zhenyang Wang
Author_Institution :
Dept. of Electron. Eng. & Inf. Sci., Univ. of Sci. & Technol. of China, Hefei, China
Abstract :
In order to alleviate the ill-conditioning problem when using the 2D memory polynomial (MP) model for concurrent dual-band digital predistortion (DPD), 2D orthogonal polynomials are proposed in this paper. Closed form expressions for 2D orthogonal polynomials are derived for uniform amplitude distribution. Experimental results show that 2D orthogonal polynomials yield better linearization performance than conventional polynomials in finite precision processing.
Keywords :
distortion; linearisation techniques; polynomials; power amplifiers; 2D memory polynomial model; 2D orthogonal polynomials; DPD; MP model; closed form expressions; concurrent dual-band digital predistortion; finite precision processing; linearization performance; power amplifiers; uniform amplitude distribution; Accuracy; Computational modeling; Distortion; Dual band; Mathematical model; Polynomials; Predistortion; Dual-band; orthogonal polynomial; power amplifiers; predistortion;
Conference_Titel :
Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International
Conference_Location :
Seattle, WA
Print_ISBN :
978-1-4673-6177-4
DOI :
10.1109/MWSYM.2013.6697474
