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International Journal of Scientific and Engineering Research
ISSN Online 2229-5518
ISSN Print: 2229-5518 9    
Website: http://www.ijser.org
scirp IJSER >> Volume 3,Issue 9,September 2012
Advanced Approach To Look-up Table Design For Memory Based Realization of FIR Digital Filter
Full Text(PDF, )  PP.737‐741  
Author(s)
K. Srikarsh Vardhan Reddy
KEYWORDS
DSP,FIR filter, LUT based multiplier,Xilinx synthesis tool.
ABSTRACT
In look-up-table(LUT)-multiplier-based approaches for an efficient memory-based implementation of finite impulse response (FIR) filter is present where the memory elements store all the possible values of products of the filter coefficients. But in this paper, memory locations in look-up table where reduced to 4 from 8 could be also an areaefficient alternative to DA-based design of FIR filter with the same throughput of implementation. We present a modified transposed form FIR filter, where a single segmented memory-core with only one pair of decoders are used to minimize the combinational area. The proposed LUT-based FIR filter is found to involve nearly half the memory-space and (1/N)times the complexity of decoders and input-registers, at the cost of marginal increase in the width of the adders, and additional ~(4N x W) AND-OR-INVERT gates and ~(2N x W) NOR gates.
References
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[4] P.K.Meher,”New approach to LUT implementation and accumulation for memory based multiplication,” in proc. 2009 IEEE Int.Symp.Circuits Syst., ISCAS’09, May 2009, pp. 453-456.

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