Viterbi decoder for decoding convolution code has smaller number of processor elements in each of a number of cascades than bits used for binary representation of range of values of path metrics

摘要

The Viterbi decoder decodes a convolution code on the basis of a radix-2x trellis with 2z states where x and z are positive integers greater than or equal to 1. The number of processor elements (PE) in each of a number of cascades is smaller than the number of bits used for binary number representation of the range of values of the path metrics (PMM).