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Two's complement computation sharing multiplier and its applications to high performance DFE

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3 Author(s)
Hunsoo Choo ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Muhammad, K. ; Roy, K.

We present a novel computation sharing multiplier architecture for two's complement numbers that leads to high performance digital signal processing systems with low power consumption. The computation sharing multiplier targets the reduction of power consumption by removing redundant computations within system by computation reuse. Use of computation sharing multiplier leads to high-performance finite impulse response (FIR) filtering operation by reusing optimal precomputations. The proposed computation sharing multiplier can be applicable to adaptive and nonadaptive FIR filter implementation. A decision feedback equalizer (DFE) was implemented based on the computation sharing multiplier in a 0.25-μ technology as an example of an adaptive filter. The performance and power consumption of the DFE using a computation sharing multiplier is compared with that of DFEs using a Wallace-tree and a Booth-encoded multiplier. The DFE implemented with the computation sharing multiplier shows improvement in performance over the DFE using a Wallace-tree multiplier, reducing the power consumption significantly.

Published in:

Signal Processing, IEEE Transactions on  (Volume:51 ,  Issue: 2 )

Date of Publication:

Feb 2003

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