Re: [Discuss-gnuradio] Continous PSK/ FSK transmitter with discrete data

Sure, but it is an example of doing it in software with minimal latency. You could do the same with HDLC Flags for idle symbols. That's quite common.

On Tue, Mar 13, 2018, 3:07 AM Mehmet Ozcelebi <mehmetozcelebi@gmail.com> wrote:

I am aware of your example, you use ccsds idle frame insert as a mechanism to achieve continous modulation. However, that is a pretty specific implementation.

2018-03-13 6:22 GMT+03:00 Dan CaJacob <dan.cajacob@gmail.com>:

I've got a pretty complicated example at https://github.com/dcajacob/gr-ccsds However, it could be simplified by removing the convolutional encoding.

On Mon, Mar 12, 2018 at 10:15 AM Mehmet Ozcelebi <mehmetozcelebi@gmail.com> wrote:

Dear All,

 I have been playing with the blocks shown in " Guided Tutorial PSK Demodulation" and want to 

implement my own Transmitter/ Receiver pair.

 First I tried to replace the "Random Source" or "File Source" blocks with a "Socket PDU-TCP Server". I observed that modulation happens only when I sent some characters and of course the demodulator could not lock properly and the data sent is not received correctly.

 What I want is a continous transmission (no burst solutions please). Maybe something where the flowgraph generates "0" s if there is no data from the "Socket PDU" and enters a scrambler.

 Which blocks should I use.

 Thank you in advance.

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Very Respectfully,

Dan CaJacob

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Very Respectfully,

Dan CaJacob