ANALYTIC DESIGN OF CONVOLUTIONAL ENCODERS.
Document Type
Conference Proceeding
Date of Original Version
12-1-1986
Abstract
Summary form only given. Binary convolutional encoders are classified by their constraint length L, the number of input bits k, and the number of output bits n with the coder's details contained in an L multiplied by n binary interconnection matrix H (with rows h//i ). Performance is typically measured through free distance. An analytuc approach is presented to the maximization of free distance which a priori fixes only L and k. The technique first computes the free distance as a function of the L unknown rows of H and then selects the h//i to maximize this function. It involves specifying the encoder's state diagram (with branch weights being functions of the //i ) and computing the encoders transfer function through Mason's gain formula, keeping only those terms relevant to the free distance. An example is given.
Citation/Publisher Attribution
Swaszek, Peter F.. "ANALYTIC DESIGN OF CONVOLUTIONAL ENCODERS.." (1986): 82. https://digitalcommons.uri.edu/ele_facpubs/1115