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Survey Paper | Electronics & Communication Engineering | India | Volume 4 Issue 12, December 2015

Improved Architectures for Fused Floating Point Add-Subtract Unit

Pooja Potdar | S. S. Tamboli

Abstract: The fused floating point add-subtract unit is useful for digital signal processing (DSP) applications Such as fast Fourier transform (FFT) & discrete cosine transform (DCT) butterfly operations. To improve the performance of fused floating point add-subtract unit, a dual path algorithm & pipelining algorithms are useful. The designs are implemented for both single and double precision. The fused floating point add-subtract unit saves area and power consumption compared to discrete floating point add-subtract unit. The dual path design reduces latency compared to discrete design with area and power consumption between discrete and fused design. The fused dual path floating point add-subtract unit can be split into two pipeline stages, since latencies of two pipeline stages will be fairly well balanced.

Keywords: Digital signal processing DSP, Floating point arithmetic, Fused floating point operation, High speed computer arithmetic

Edition: Volume 4 Issue 12, December 2015,

Pages: 496 - 498