A Novel Digital Predistortion Identification Algorithm Based on Variable Forgetting Factor Recursive Least Square Method

Table 2

Comparison of ACPR under three input signals.

Input signal		RLS/VFFRLS (1)/VFFRLS (2)/NVFFRLS (, )
64-QAM	Low	-40.54	-42.34	-42.42	-43.00
	Up	-40.46	-42.13	-42.17	-42.83