function uwb_init;

sys = bdroot;

% Generate channel impulse responses if required.
currentFolder = pwd;
uwbFolder = fileparts(which('uwb_init'));
cd(uwbFolder);
if ~exist('cm1_imr.mat', 'file')
    disp(sprintf('\n'));
    disp('*** Generating UWB channel impulse responses ***');
    for cm_num = 1:4
        disp(sprintf('\n'));
        disp(['*** Channel model ' num2str(cm_num) ' ***']);
        uwb_sv_eval_ct;
    end
    disp(sprintf('\n'));
    disp('*** Completed generating UWB impulse responses ***');
    disp(['*** MAT files created in ' uwbFolder ' ***']);
end
cd(currentFolder);

% Initialize uwb workspace structure.
assignin('base', 'uwb', uwb_settings(30,16));

% Initialize design tutorial.
% uwb_step(0);