METHOD AND APPARATUS OF COMPENSATION FOR MAGNITUDE AND PHASE DELAY USING SUB-BAND POLYPHASE FILTER BANK IN BROADBAND WIRELESS COMMUNICATION SYSTEM

摘要

invention is a wireless communication system in the baseband signal is an intermediate frequency band (Immediate Frequency; IF) , and radio frequency band (Radio Frequency; RF) methods and apparatus for improving the phenomenon that in-band gain flatness and phase characteristic is deteriorated when the change in the signal is disclosed. Specifically, dividing the wideband signal using the sub-band of a plurality of sub-band signal extractor , and the baseband gain and phase delay compensation line of the respective sub- yeokbyeol signal over the course of the IF, RF signal back into a wideband signal by combining in-band gain flatness can be improved also caused delays and phase flatness degradation .