Title :
On Computational Complexity in Digital Transmultiplexer Filters
Author :
Bellanger, Maurice G.
Author_Institution :
TRT, France
fDate :
7/1/1982 12:00:00 AM
Abstract :
The quality standards recommended by the CCITT are the reference for the design of digital transmultiplexer filters. Their impact on filter specifications is analyzed, and expressions are given for the filter order, coefficient, and data word lengths in FIR and IIR approaches. Improvements on the polyphase filter bank design are pointed out, and the method is presented as a hybrid FIR-IIR technique. Finally, it turns out that the multiplication rate is the crucial parameter for complexity comparison between the approaches considered.
Keywords :
computational complexity; digital filters; multiplexing equipment; transmultiplexing; CCITT; FDM; FIR; IIR; PCM; coefficient; complexity comparison; computational complexity; data word lengths; design; digital transmultiplexer filters; distortion; filter order; filter specifications; finite impulse response filter; hybrid FIR-IIR technique; multiplication rate; noise; parameter; polyphase filter bank design; quality standards; signal processing; telephone channels; voice channel; wide-band multichannel spectrum; Computational complexity; Crosstalk; Digital filters; Filter bank; Filtering; Finite impulse response filter; IIR filters; Phase change materials; Signal processing; Telephony;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOM.1982.1095651
