26 October 2015

MIL 188-110C App.D: BW18KHz, SR14400 Bd, PSK-8

 Waveform Number 7: PSK-8, 18 KHz bandwidth

This waveform (WID7-18Khz) occupies a bandwidth of 18 kHz, providing 28800 bps user data rate. Modulation used is PSK-8 at 14400 symbols/sec. Reading the MIL 188-110C App.D documentation, a frame for this waveform consists of 1536 unkown symbols (data) + 192 known symbols (mini probe), so 1728 symbols. Since the 14400 baudrate , the mini-probes should generate a 120 ms ACF: in this sample I used the CCF function but the obtained 240 ms result is the same as in WID7-15Khz.