Re: [Discuss-gnuradio] Modulation order of FSK

Hello, Marcus.

First of all, I'm very grateful for your answer. But how I can make a connection between the bits and the "baseband frequency values" that you mentioned in the mail? 

For example, I have a 000110 bit series for 4FSK. And then, I think I need to pack into 2 bits like 00-01-10. But then how can I turn the bits to appropriate form for implement the frequency modulation block? After that, am I going to apply to the frequency modulation block for each group of symbols? Can you share a flow chart for understand better? like file txt ---> packed --->frequency mod ----> sink.

 Yours sincerely.

-Batuhan Kaplan

Batu Kaplan <mozbeth01@gmail.com>, 5 Mar 2019 Sal, 12:09 tarihinde şunu yazdı:

Hello, Marcus.

First of all, I'm very grateful for your answer. But how I can make a connection between the bits and the "baseband frequency values" that you mentioned in the mail? 

For example, I have 000110 bit series for 4FSK. And then, I think I need to pack into 2 bits like 00-01-10. But then how can I turn the bits to appropriate form for implement the frequency modulation block? After that, am I going to apply to the frequency modulation block for each group of symbols? Can you share a flow chart for us to understand better? like file txt ---> packed ---> frequency mod ----> sink.

 Yours sincerely.

-Batuhan Kaplan

Müller, Marcus (CEL) <mueller@kit.edu>, 1 Mar 2019 Cum, 21:42 tarihinde şunu yazdı:

Hi Batu,

a really intuitive way of implementing FSKs is to convert your bit
groups to baseband frequency values (e.g. -1.5, -0.5, 0.5, 1.5) and use
them with the frequency mod block.

Best regards,
Marcus

Marcus

On Fri, 2019-03-01 at 16:59 +0300, Batu Kaplan wrote:
> I am implementing the binary FSK with GFSK block and I think it is working correctly. For the next step I want to increase my modulation order of FSK modulation, like 4-FSK and 8-FSK, however, I could not move forward from the file source block. How can I implement the 4-FSK and 8-FSK on GNURadio?