An efficient implementation architecture for wide-band digital downconversion

TN; The wide-band digital receiving systems require digital downconversion(DDC) with high data rate and short tuning time in order to intercept the narrow-band signals within broad tuning bandwidth. But these requirements can not be met by the commercial DDC. In this paper an efficient implementatio...

Full description

Saved in:
Bibliographic Details
Published inJournal of electronics (China) Vol. 18; no. 1; pp. 38 - 45
Main Authors Gao, Zhicheng, Xiao, Xianci
Format Journal Article
LanguageEnglish
Published University of Electronic Science and Technology of China, Chengdu 610054 01.01.2001
Subjects
Digital downconversion
Polyphase filter
Wide-band digital receiving
Online AccessGet full text

Cover

More Information
Summary:TN; The wide-band digital receiving systems require digital downconversion(DDC) with high data rate and short tuning time in order to intercept the narrow-band signals within broad tuning bandwidth. But these requirements can not be met by the commercial DDC. In this paper an efficient implementation architecture is presented. It combines the flexibility of DFT tuning with the efficiency of the polyphase filter bank decomposition. By first decimating the data prior to filtering and mixing, this architecture gives a better solution to the mismatch between the lower hardware speed and high data rate. The computer simulations show the feasibility of this processing architecture.
ISSN:0217-9822
1993-0615
DOI:10.1007/s11767-001-0006-7