Re: [Discuss-gnuradio] "Error rate" block with USRP

[Tom Rondeau]

On Wed, Apr 16, 2014 at 2:06 PM, Azza <address@hidden> wrote:

Tom Rondeau-2 wrote
> On Wed, Apr 16, 2014 at 10:57 AM, Azza &lt;

> azza.ben.mosbah@

> &gt; wrote:
>
>> Thank you.
>> I have taken out the throttle block and add an AGC block at the receiver.
>> To proceed with the synchronization, should I use a Constellation
>> Receiver
>> block or a Polyphase Clock Sync block ?
>>
>> Kind regards,
>> Azza
>>
>
>
> You'll actually need both. AGC -> clock sync -> constellation receiver
> (phase/freq recovery and decoding).
>
> Also, please reply in-line with the rest of the message. By cutting off
> the
> other part of our conversation makes it difficult for others to follow the
> thread.
>
> Tom

Thank you.
I have added modifications to my flowgraph:
<http://gnuradio.4.n7.nabble.com/file/n47630/gnu-ber-modified.png>
But, I am still confused about minimum/maximum frequency deviation in the
Constellation Receiver block. How should it be set?

Regards,
Azza

 Those are settings to keep the frequency sync from walking away, in normalized frequency. +1 and -1 should work fine.

Tom