Rob Maunder’s research pages

This Matlab code lets you draw EXIT chart, iterative decoding trajectories and BER plots for a half-rate repeat accumulate code.

main_EXIT.m draws an EXIT chart for a half-rate repeat accumulate code.
main_traj.m draws iterative decoding trajectories for a half-rate repeat accumulate code.
main_ber.m draws a BER plot for a half-rate repeat accumulate code.
conv_encoder.m provides an encoder function for a unity-rate convolutional code.
bcjr_decoder.m provides a soft-in soft-out decoder function for a unity-rate convolutional code.
ra_encoder.m provides an encoder function for a half-rate repeat accumulate code.
ra_decoder.m provides an iterative decoder function for a half-rate repeat accumulate code.
jac.m provides a function for performing the exact, lookup-table-aided and approximate Jacobian logarithms.
generate_llrs.m provides a function for generating Gaussian distributed a priori LLRs.
measure_mutual_information_histogram.m measures the mutual information of some LLRs using the histogram method.
measure_mutual_information_averaging.m measures the mutual information of some LLRs using the averaging method.

You can download the Matlab code here.

Copyright © 2009 Robert G. Maunder. This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.