Title :
A novel iterative digital down converter
Author :
MalmirChegini, M. ; Haghshenas, Hamed ; Marvasti, F.
Author_Institution :
Sharif Univ. of Technol., Tehran
Abstract :
The digital radio receivers often have fast analog to digital converters delivering vast amount of data. However, in many cases, the signal of interest represents a small proportion of that bandwidth. A digital down converter (DDC) is a filter that extracts the signal of interest from the incoming data stream. In this paper we first introduce an algorithm based on FFT which can be applied for simultaneous frequency shifting and decimating of intermediate frequency (IF) band signals, then a simplified iterative algorithm is suggested to improve the quality of reconstructed baseband signal.
Keywords :
digital-analogue conversion; fast Fourier transforms; iterative methods; radio receivers; FFT; analog to digital converters; digital radio receivers; intermediate frequency band signals; iterative algorithm; iterative digital down converter; reconstructed baseband signal; Algorithm design and analysis; Band pass filters; Bandwidth; Baseband; Finite impulse response filter; Frequency conversion; Iterative algorithms; Passband; Sampling methods; Signal processing; Digital down converter; iterative algorithm; multi channel receiver;
Conference_Titel :
Telecommunications and Malaysia International Conference on Communications, 2007. ICT-MICC 2007. IEEE International Conference on
Conference_Location :
Penang
Print_ISBN :
978-1-4244-1094-1
Electronic_ISBN :
978-1-4244-1094-1
DOI :
10.1109/ICTMICC.2007.4448677
