Title
Characterization of RNS multiply-add units for power efficient DSP
Abstract
In the past decades, the Residue Number System (RNS) has been adopted in DSP as an alternative to the traditional two's complement number system (TCS) because of the savings in area, higher speed and reduced power dissipation. In this work, we perform a comprehensive Design Space Exploration (DSE) for a fused multiply-add unit by taking into account four metrics: area, delay, power consumption, and switching activity. The results of the DSE are verified against the TCS and RNS implementation of parallel FIR filters of different characteristics. In both the DSE and the filter implementation, we consider two design corners: maximum speed and minimum area. The experimental results demonstrate that for high data rates and high order filters, the RNS implementation is more power efficient than the TCS because of the reduced switching activity and the larger amount of low-power cells placed in the unit.
Year
DOI
Venue
2015
10.1109/MWSCAS.2015.7282052
Circuits and Systems
Keywords
Field
DocType
FIR filters,digital signal processing chips,residue number systems,DSE,RNS multiply-add units,TCS,complement number system,design space exploration,parallel FIR filters,power efficient DSP,switching activity
Digital signal processing,Dynamic range,Power efficient,Dissipation,Computer science,Electronic engineering,Residue number system,Finite impulse response,Design space exploration,Power consumption
Conference
ISSN
Citations 
PageRank 
1548-3746
1
0.35
References 
Authors
3
4
Name
Order
Citations
PageRank
Gian-Carlo Cardarilli15714.97
Nannarelli, A.2225.71
massimo petricca310.35
Marco Re419435.03