Title :
Joint Adaptive Compensation for Amplifier Nonlinearity and Quadrature Modulation Errors
Author :
Kim, Young-Doo ; Jeong, Eui-Rim ; Noh, Taegyun ; Lee, Yong H.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon
Abstract :
This paper proposes a technique that jointly compensates the amplifier nonlinearity and quadrature modulation (QM) errors. The proposed method is derived based on the indirect learning architecture, which has been originally developed for the predistortion (PD). The proposed compensator updates the parameter vector based on the recursive least squares (RLS) criterion. The advantage of the proposed adaptive technique is demonstrated through computer simulation
Keywords :
least squares approximations; mobile radio; modulation; power amplifiers; recursive estimation; amplifier nonlinearity; indirect learning architecture; joint adaptive compensation; predistortion; quadrature modulation errors; recursive least squares criterion; Baseband; Computer architecture; Computer errors; Feedback loop; Frequency; Least squares methods; Polynomials; Predistortion; Resonance light scattering; Telecommunications;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683265
