A study on digital compensation scheme for coefficient errors of complex filterbank for low-IF receivers

摘要

In this report, a degital compensation scheme for coefficient errors of complex filterbank for Low-IF receivers is presented. The complex filterbank is employed to supress DC offset and image signals in the Low-IF receivers and relax the requirements on conversion rate and resolution of A/D converters. The proposed compensation scheme reduces the influence of coefficient errors and improves the effective resolution of AD converters.