Title :
A new baseband digital predistortion system
Author :
Shi, Ming ; Chen, Ming ; Zhang, Lei ; Zhou, Jianyi
Author_Institution :
State Key Lab. of Millimeter Wave, Southeast Univ., Nanjing, China
Abstract :
Digital predistortion technique has become more and more important in the modern mobile communications due to its excellent IMD suppression. In this paper, a new baseband digital predistortion system based on a complex gain look-up table and a simplified linear convergence algorithm is developed, simulated and tested using a hardware-EDA software combined testing solution. Trustful result got from a real test PA shows as much as 15dB reduction in the ACPR can be achieved with our system.
Keywords :
computerised instrumentation; convergence; distortion; table lookup; baseband digital predistortion system; complex gain LUT; hardware-EDA software; linear convergence algorithm; look-up table; Baseband; Delay; Digital modulation; Feedback; Frequency synchronization; Mobile communication; Predistortion; Software testing; System testing; Table lookup; baseband digital predistortion; complex gain LUT;
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606477
