>On Sep 4, 1:10 am, "m" <stuttbr...@hotmail.com> wrote:
>> Hi everybody,
>>
>> I am implementing a GMSK demodulator. To achieve coherent demodulation,
I
>> recovered the frequency with the power of 4 of the signal. How can I
>> recover then the phase? Can anybody give me any clue?
>>
>> Thanks
>> mj
>
>I am rusty on this but I think you need a power of 4 and then a phase-
>locked loop. You then divide down by 4 the  recovered frequency. Will
>be a bit noisy.
>

Thank you for your answer,

I tried what you suggest but the peak that should happen at 4 times the
frequency is very weak and, as there is doppler, maybe the PLL could lock
to a wrong frequency. Any other ideas?

Thansk a lot
mj

On Sep 4, 1:10 am, "m" <stuttbr...@hotmail.com> wrote:
> Hi everybody,
>
> I am implementing a GMSK demodulator. To achieve coherent demodulation, I
> recovered the frequency with the power of 4 of the signal. How can I
> recover then the phase? Can anybody give me any clue?
>
> Thanks
> mj

I am rusty on this but I think you need a power of 4 and then a phase-
locked loop. You then divide down by 4 the  recovered frequency. Will
be a bit noisy.

Hi everybody,

I am implementing a GMSK demodulator. To achieve coherent demodulation, I
recovered the frequency with the power of 4 of the signal. How can I
recover then the phase? Can anybody give me any clue?

Thanks
mj