Digital compensation scheme for coefficient errors of complex filter bank parallel A/D converter in low-IF receivers
نویسندگان
چکیده
In this paper, a digital compensation scheme for coefficient errors of a complex filter bank parallel A/D converter in low-IF receivers is presented. The complex filter bank is employed to suppress DC offset and image signals in the lowIF receivers and relax the requirements on the conversion rate and resolution of A/D converters. The proposed compensation scheme regenerates interference due to coefficient errors and subtracts it from the digital signal converted by an A/D converter. The proposed scheme also improves the effective resolution of A/D converters. key words: low-IF receiver, filter bank, A/D converter, software radio
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