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Large dynamic range computations over small finite rings

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3 Author(s)
Wigley, N.M. ; VLSI Res. Group, Windsor Univ., Ont., Canada ; Jullien, G.A. ; Reaume, D.

Presents a new multivariate mapping strategy for the recently introduced Modulus Replication Residue Number System (MRRNS). This mapping allows computation over a large dynamic range using replications of extremely small rings. The technique maintains the useful features of the MRRNS, namely: ease of input coding; absence of a Chinese Remainder Theorem inverse mapping across the full dynamic range; replication of identical rings; and natural integration of complex data processing. The concepts are illustrated by a specific example of complex inner product processing associated with a radix-4 decimation in time fast Fourier transform algorithm. A complete quantization analysis is performed and an efficient scaling strategy chosen based on the analysis. The example processor uses replications of three rings: modulo-3, -5, and -7; the effective dynamic range is in excess of 32 b. The paper also includes very-large-scale-integration implementation strategies for the processor architecture that consists of arrays of massively parallel linear bit-level pipelines

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Computers, IEEE Transactions on  (Volume:43 ,  Issue: 1 )