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— The Viterbi algorithm (VA) is characterized by a graph, called a trellis, which defines the transitions between states. To define an area efficient architecture for the VA is equivalent to obtaining an efficient mapping of the trellis. In this paper, we present a methodology that permits the efficient hardware mapping of the VA onto a processor network of… (More)

—A new method for the high-speed computation of double-precision floating-point reciprocal, division, square root, and inverse square root operations is presented in this paper. This method employs a second-degree minimax polynomial approximation to obtain an accurate initial estimate of the reciprocal and the inverse square root values, and then performs a… (More)

ÐA very-high radix algorithm and implementation for circular CORDIC is presented. We first present in depth the algorithm for the vectoring mode in which the selection of the digits is performed by rounding of the control variable. To assure convergence with this kind of selection, the operands are prescaled. However, in the CORDIC algorithm, the coordinate… (More)

In this paper we propose an architecture for the computation of the double—precision floating—point multiply—add fused (MAF) operation A + (B × C) that permits to compute the floating—point addition with lower latency than floating—point multiplication and MAF. While previous MAF architectures compute the three operations with the same latency, the proposed… (More)