IIR filter design using CSA for DSP applications
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2015, Vol 3, Issue 6
Abstract
In this paper, a design methodology to implement low-power and high-speed 2nd order recursive digital Infinite Impulse Response filter has been proposed. Existing IIR digital filters have a large number of constant multiplications. The proposed method replaces constant multiplications by using addition/subtraction and shift operations. The proposed new adder cell is used as the Carry-Save Adder to implement addition/subtraction operations in the design of recursive section IIR filter to reduce the delay. Furthermore, high level algorithms designed for the optimization of the number of CSA blocks are used to reduce the complexity of the IIR filter. The microwind tool is used to generate the schematic of the proposed CSA based shift-adds architecture design and it will be analyzed by using Micro wind CAD tool to synthesize low-complexity and high speed IIR filters. The proposed design reduces power, propagation delay, area and increase throughput when compared with the existing technology.
Authors and Affiliations
Sagara. K. S, Ravi L. S
Keywords
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