A new baseband digital predistortion system
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.