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Vector radix FFT error analysis

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2 Author(s)
Prakash, S. ; Indian Institute of Technology, Madras, India. ; Rao, V.V.

In this correspondence expressions are derived for the multiplication roundoff and scaling error variances in a multidimensional vector radix FFT algorithm, for fixed-point one's complement/ sign-magnitude arithmetic. Results are given for base-2 and base-4 algorithms for both decimation-in-time and decimation-in-frequency methods. Comparisons of the erior performance are made with the conventional methods.

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Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:30 ,  Issue: 5 )