Design Of Digital Filters Using Incremental Changes In Processing

ABSTRACT

 

Procedures are developed for designing high-speed, modular digital filters. The techniques presented  here are based on the use of differences in the data signal in processing. The use of one-bit word, and the use of mapping of differentials in processing to produce a multiplication free, fast, and modular structured digital filters is considered in details in this thesis. A new algorithm for the digital filter is also proposed in the thesis which leads to the possibility of using, for the first time, the carry-save arrays in implementing a multiplication free digital filter. The importance of these techniques "use of differences" arises from the 'wide-spread use of differential pulse code modulated (DPCM) signals, as well as the use of delta modulated (DM) signals in communication networks. The principles of operations as well as the possible hardware realizations of such digital filters are considered in details.