NDLI: Design of low complexity digital FIR filters

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Design of low complexity digital FIR filters

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Design of low complexity digital FIR filters

Content Provider	ACM Digital Library
Author	Costa, Eduardo Aksoy, Levent Jaccottet, Diego
Abstract	The multiplication of a variable by multiple constants, i.e., the multiple constant multiplications (MCM), has been a central operation and performance bottleneck in many applications, such as finite impulse response (FIR) filters and linear transforms. Although low-complexity high-performance multiplier architectures have been proposed for the constant multiplications, the area and delay optimization of the MCM operation has often been accomplished by synthesizing the constant multiplications using only addition/subtraction and shifting operations in the shift-adds architecture. To obtain further reductions in area, delay, and power consumption in the shift-adds design of the MCM operation, efficient high-level algorithms have also been proposed. In this paper, we introduce a computer-aided design tool for the synthesis of low-complexity digital FIR filters that includes both high and low level synthesis phases. In the high-level synthesis phase, the MCM operation is optimized in terms of high-level area and delay parameters and the digital FIR filter with the optimized MCM operation is implemented at gate-level in the low-level synthesis phase. It is observed from the experimental results that the design of the MCM operation in shifts-add architecture with the use of high-level algorithms achieves significant area improvements on filter implementations with respect to designs whose MCM operations are implemented in array multiplier architecture.
Starting Page	1
Ending Page	6
Page Count	6
File Format	PDF
ISBN	9781605587059
DOI	10.1145/1601896.1601951
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2009-08-31
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Multiplierless filter design Multiple constant multiplications Array multipliers High-level synthesis Low-level synthesis
Content Type	Text
Resource Type	Article

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