High performance DIF-FFT using dissimilar partitioned LUT based Distributed Arithmetic

Bhaskara Rao Jammu, Charan Muntha, Kusma Kumari Cheepurupalli, Noor Mahammad S

Abstract


Real-time data processing systems utilize Digital Signal Processing (DSP) functions as the base modules. Most of the DSP functions involve the implementation of Fast Fourier Transform (FFT) to convert the signals from one domain to another domain. The major bottleneck of Decimation in frequency-Fast Fourier Transform (DIF-FFT) implementation lies in using a number of Multipliers. Distributed arithmetic (DA) is considered as one of the efficient techniques to implement DIF-FFT. In this approach, the multipliers are not used. The proposed technique exploits the very advantage of the look-up table by storing the Twiddle factors, thereby avoiding the multipliers required in the butterfly structure. DIF-FFT using Distributed Arithmetic (DIF-FFT DA) models, with different adders such as Ripple carry adder (RCA), Carry-lookahead adder (CLA), and Sklansky prefix graph adder, are proposed in this paper. The three proposed models are synthesized using Cadence 6.1 EDA tools with a 45nm CMOS technology. Compared to the traditional method, it is observed that the area is improved by 53.11%, 53.35%, and 50.15%, power is improved by 42.31%, 42.52%, and 40.39%, and delay is improved by 45.26%, 45.42%, 41.80%, respectively.

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References


H. Kim and S. Lekcharoen, “A cooley-tukey modified algorithm

in fast fourier transform,” The Korean Journal of Mathematics,

vol. 19, no. 3, 2011.

J. Watson, “Digital signal processing: Principles, devices and

applications.” Institution of Electrical Engineers, 1990.

B. Mohindroo, A. Paliwal, and K. Suneja, “Fpga based faster

implementation of mac unit in residual number system,” in 2020

International Conference for Emerging Technology (INCET).

IEEE, 2020, pp. 1–4.

R. Gonzalez-Toral, P. Reviriego, J. A. Maestro, and Z. Gao, “A

scheme to design concurrent error detection techniques for the

fast fourier transform implemented in sram-based fpgas,” IEEE

Transactions on Computers, vol. 67, no. 7, pp. 1039–1045, 2018.

K. K. Parhi, VLSI digital signal processing systems: design and

implementation. John Wiley & Sons, 2007.

D. Deepak and R. D. Kiran, “Hardware implementation of

discrete cosine transform,” 2002.

R. Guo and L. S. DeBrunner, “A novel adaptive filter implementation

scheme using distributed arithmetic,” in 2011 Conference

Record of the Forty Fifth Asilomar Conference on Signals,

Systems and Computers (ASILOMAR). IEEE, 2011, pp. 160–

S. Patel, “Design and implementation of 31-order fir low-pass

filter using modified distributed arithmetic based on fpga,”

International Journal of Advanced Research in Electrical, Electronics

and Instrumentation Engineering, vol. 2, no. 10, pp.

–656, 2013.

S. Venkatachalam and S.-B. Ko, “Approximate sum-of-products

designs based on distributed arithmetic,” IEEE Transactions on

very large scale integration (VLSI) systems, vol. 26, no. 8, pp.

–1608, 2018.

K. N. Bowlyn and N. M. Botros, “A novel distributed arithmetic

multiplierless approach for computing complex inner products,”

in Proceedings of the International Conference on Parallel and

Distributed Processing Techniques and Applications (PDPTA).

The Steering Committee of The World Congress in Computer

Science, Computer , 2015, p. 606.

E. E. Swartzlander and C. E. Lemonds, Computer Arithmetic:

Volume III. World Scientific, 2015.

K. Vitoroulis and A. J. Al-Khalili, “Performance of parallel

prefix adders implemented with fpga technology,” in 2007 IEEE

Northeast Workshop on Circuits and Systems. IEEE, 2007, pp.

–501.

A. K. Y. Reddy and S. P. Kumar, “Performance analysis

of 8-point fft using approximate radix-8 booth multiplier,”

in 2018 3rd International Conference on Communication and

Electronics Systems (ICCES). IEEE, 2018, pp. 42–45.

A. Ajay and R. M. Lourde, “Vlsi implementation of an improved

multiplier for fft computation in biomedical applications,” in

IEEE Computer Society Annual Symposium on VLSI.

IEEE, 2015, pp. 68–73.

N. M. Sk et al., “Multi-mode parallel and folded vlsi architectures

for 1d-fast fourier transform,” Integration, vol. 55, pp.

–56, 2016.


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