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A 1.9 Gb/s 358 mW 16–256 State Reconfigurable Viterbi Accelerator in 90 nm CMOS

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5 Author(s)

A 16-256 state coarse-grain reconfigurable Viterbi accelerator fabricated in 1.3 Vt 90 nm dual-CMOS technology is described for 3.8 GHz operation, with 1.9 Gb/s data rate in 32-state mode. Radix-4 ripple-carry ACS circuits, reconfigurable path metric read/write control, and tree-bitline traceback memory circuits with programmable ring-buffer decoders enable 358 mW total power, measured at 1.3 V, 50degC, with performance scalable to 2.35 Gb/s at 1.7 V, 50degC.

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Solid-State Circuits, IEEE Journal of  (Volume:43 ,  Issue: 1 )