A Parallelizable Adaptive Method to Update Close-Loop Digital Predistorter for RF Power Amplifiers
This paper presents a parallelizable adaptive method to estimate and update close-loop digital predistorter for RF power amplifiers. The proposed scheme can be realized with multiple processors which can save computational time and be used in real-time implementation. By using a three-carrier wideband code-division multiple access (WCDMA) signal, the scheme is tested in the way of 3 branches in Nios II. Results show that the performance is approximate to that based on RLS algorithm and the time the scheme expensed is much less than that RLS needed.
J. Z. Li et al., "A Parallelizable Adaptive Method to Update Close-Loop Digital Predistorter for RF Power Amplifiers", Applied Mechanics and Materials, Vols. 130-134, pp. 4252-4255, 2012