function modofdma(modparams)

% generate raw constellation data for one frame
switch modparams.permutation,
    case 'DL_PUSC', % cluster structure
        error('Unavailable!');
    case 'DL_FUSC', % Full used, Note: Not use Variable/Constant pilot set here!
        mod_4Tx_STBC_DFUSC(modparams);
    case 'UL_PUSC', % tile structure, Note: tile expand 3 symbols, must allocate data for 3 symbols one time
        error('Unavailable!');
    otherwise,
        error('Not supported permutation!');
end