High-speed custom VLSI DSP systems
Jonathon D. Mellot, Michael P. Lewis · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 1996
In this paper we examine the use of a recent innovation, called the logarithmic residue number system or LRNS, as an alternative to conventional DSP processors for implementing multiply-accumulate operations. We have fabricated a custom VLSI processor based upon this technology that is capable of providing substantial acceleration of vector arithmetic operations, convolution, correlation, and Fourier transforms in a relatively small, fast processor core when compared with implementations based on conventional arithmetic. The constituent arithmetic elements can be used as standard cells to implement application specific DSP designs.