Name
Abstract | ||
|---|---|---|
The scaling operation, i.e. the division by a constant factor followed by rounding, is a commonly used technique for reducing the dynamic range in Digital Signal Processing (DSP) systems. Usually, the constant is a power of two, and the implementation of the scaling is reduced to a right shift. This basic operation is not easily implementable in the Residue Number System (RNS) due to its non positional nature. A number of different algorithms have been presented in the literature for the RNS scaling. In this paper, several RNS dynamic reduction techniques have been analyzed and the selected one is applied to a polyphase filter bank. A comparison of the filter bank scaled with RNS to binary and binary to RNS conversions, and the RNS scaled implementation is presented. A reduction of area and power consumption of about 30% for the scaling block is obtained. In this paper, starting from the analysis of different RNS scaling algorithms proposed in the literature, an optimized method for power of two scaling is proposed and the results of the comparison with other techniques are given. Moreover, the application of the proposed scaling algorithm to a polyphase filter bank is illustrated. Results shows a 30% reduction of area and power consumption in the scaling block. |
Year | DOI | Venue |
|---|---|---|
2005 | 10.1109/ISCAS.2005.1464785 | ISCAS (2) |
Keywords | Field | DocType |
channel bank filters,digital filters,residue number systems,scaling circuits,DSP system dynamic range reduction,QRNS polyphase filter bank,RNS/binary conversions,constant factor division,power-of-two RNS scaler,programmable RNS scaler,residue number system,rounding,scaling block implementation,scaling operation | Digital signal processing,Polyphase system,Digital filter,Computer science,Filter bank,Electronic engineering,Rounding,Residue number system,Power of two,Binary number | Conference |
ISSN | ISBN | Citations |
0271-4302 | 0-7803-8834-8 | 5 |
PageRank | References | Authors |
0.49 | 10 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Gian-Carlo Cardarilli | 1 | 57 | 14.97 |
| Del Re, A. | 2 | 7 | 1.37 |
| Alberto Nannarelli | 3 | 190 | 20.41 |
| Marco Re | 4 | 194 | 35.03 |