That's probably a good option to add. When I use OFDM on FM
(experimentally), I move the frequency center left, to narrow the bandwidth.
Look at ofdm_mod.c and add:
if ((arg = opt_exists(argv, argc, "--fcentre"))) {
ofdm_config->fcentre = atof(argv[arg+1]); /* Centre Frequency */
} else {
ofdm_config->fcentre = 1500.0;
}
probably the same in ofdm_demod.c
On Thu, Sep 13, 2018 at 11:02 PM Đích Kiều <[email protected]> wrote:
> Hi everyone, Hi David, Hi Bruce,
>
> I'm working in FreeDV on the old telephone network. I'm run into a problem
> that I can't work with full-duplex because I think, due to the hybrid
> circuit in the PSTN network. My solution is to adjust the center frequency
> of the FreeDV 700D with different for TX (1000Hz) and RX (2200Hz). I hope
> this help, I'm trying.
>
> I need some advice from all of you about that. If it's OK. How can I
> adjust the center frequency of the FreeDV?
>
> P/ S: I can't use dial modem because I need fast sync.
> Thanks very much.
>
> Email : [email protected]
> SĐT : 0904736189
> _______________________________________________
> Freetel-codec2 mailing list
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>
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