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Re: [Discuss-gnuradio] gmsk error
From: |
Matt Ettus |
Subject: |
Re: [Discuss-gnuradio] gmsk error |
Date: |
Tue, 06 Dec 2005 16:11:31 -0800 |
User-agent: |
Mozilla Thunderbird 1.0.7-1.1.fc4 (X11/20050929) |
> What should the data going in and out of the gr.clock_recovery_mm_ff look
> like?
Your data looks good except for the DC offset.
> I see that in gmsk2.py you remove DC offset, should the signal be varying
> +/-Vpeak equally?
Yes, the data should be symmetric about zero.
> Any requirements that the signal should be over sampled?
You have plenty of oversampling there
> Is the output basically resampled at the data clock rate so that each
> output point represent a bit?
Yes.
Also, keep in mind that the M&M synchronizer gain is proportional to
sample amplitude. This will affect your loop bandwidth.
Matt
- Re: [Discuss-gnuradio] gmsk error, (continued)
- Re: [Discuss-gnuradio] gmsk error, address@hidden, 2005/12/05
- Re: [Discuss-gnuradio] gmsk error, address@hidden, 2005/12/05
- Re: [Discuss-gnuradio] gmsk error, address@hidden, 2005/12/06
- Re: [Discuss-gnuradio] gmsk error, address@hidden, 2005/12/06
- Re: [Discuss-gnuradio] gmsk error, address@hidden, 2005/12/06