Exemplo n.º 1
0
// reset frame synchronizer object
void gmskframesync_reset(gmskframesync _q)
{
    // reset state and counters
    _q->state = STATE_DETECTFRAME;
    _q->preamble_counter = 0;
    _q->header_counter   = 0;
    _q->payload_counter  = 0;
    
    // clear pre-demod buffer
    windowcf_clear(_q->buffer);

    // reset internal objects
    detector_cccf_reset(_q->frame_detector);
    
    // reset carrier recovery objects
    nco_crcf_reset(_q->nco_coarse);

    // reset sample state
    _q->x_prime = 0.0f;
    _q->fi_hat  = 0.0f;
    
    // reset symbol timing recovery state
    firpfb_rrrf_reset(_q->mf);
    firpfb_rrrf_reset(_q->dmf);
    _q->pfb_q = 0.0f;   // filtered error signal
        
}
Exemplo n.º 2
0
// reset frame synchronizer object
void flexframesync_reset(flexframesync _q)
{
    // reset binary pre-demod synchronizer
    detector_cccf_reset(_q->frame_detector);

    // clear pre-demod buffer
    windowcf_clear(_q->buffer);

    // reset carrier recovery objects
    nco_crcf_reset(_q->nco_coarse);
    nco_crcf_reset(_q->nco_fine);

    // reset symbol timing recovery state
    firpfb_crcf_reset(_q->mf);
    firpfb_crcf_reset(_q->dmf);
    _q->pfb_q = 0.0f;   // filtered error signal
        
    // reset state
    _q->state           = STATE_DETECTFRAME;
    _q->pn_counter      = 0;
    _q->header_counter  = 0;
    _q->payload_counter = 0;
    
    // reset frame statistics
    _q->framestats.evm = 0.0f;
}