Chapter Part of the book series (SECS, volume 316) Abstract Digital signal processing (DSP) is used in a wide range of applications such as speech, telephone, mobile radio, satellite communications, biomedical, image, video, radar and sonar. Different applications of signal processing impose different constraints on hardware architectures.
BIT-SERIAL ARITHMETIC Bit-Serial Addition and Subtraction X = x 0 ∑ x 1 x 2 x Wd –1 Y = y 0 ∑ y 1 y 2 y Wd –1 MSB LSB LSB first is commonly used The MSB first case is more difficult, but it is sometimes used D D X Y DC Reset Set X Sum DiffY D C FA DSP Integrated Circuits Department of Electrical Engineering [email protected]. Bit-serial arithmetic provides a way to minimize pin count, wire length, and floor space requirements in VLSI designs. However, performing bit-serial arithmetic simply and quickly, especially when all operands are entered serially, poses challenging design and implementation problems. Since bit-serial adders/subtractors are easily realized.
This book is concerned with design of real-time architectures where signal samples are processed as soon as these are received from the signal source. This is in contrast with batch-mode processing where signal samples are first stored in buffers and then processed in batch. Real-time DSP architectures are designed to match the hardware speed to the application sample speed. Since different real-time applications require different sample rates, a DSP algorithm needs to be implemented in different styles for various applications. Thus, design of real-time architectures for these applications requires study of families of architectures.
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