Title :
A variable-rate filtering system for digital communications
Author :
Wasserman, L. ; Willson, Alan N., Jr.
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
We propose an efficient programmable transmit-receive digital filter structure consisting of a pulse shaping filter (PSF) and a cascaded integrator-comb (CIC) filter which is applicable to variable-rate digital communication systems. The CIC structure is a hardware-efficient means of constructing programmable interpolation and decimation filters, but it introduces a large amount of intersymbol interference (ISI). We solve this problem by proposing a filter design method that determines the PSF coefficients such that the cascade of the PSF and CIC filter exhibits the desired frequency response
Keywords :
digital communication; digital filters; frequency response; interpolation; intersymbol interference; network synthesis; programmable filters; pulse shaping; receivers; transmitters; ISI; PSF coefficients; cascaded integrator-comb filter; filter design method; frequency response; hardware-efficient structure; intersymbol interference; programmable decimation filter; programmable interpolation filter; programmable transmit-receive digital filter; pulse shaping filter; variable-rate digital communication systems; variable-rate filtering system; Attenuation; Band pass filters; Chirp modulation; Demodulation; Digital communication; Digital filters; Filtering; Frequency response; Passband; Transfer functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.756267
