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Re: [Discuss-gnuradio] Simple band pass filter
From: |
umer.rabbani |
Subject: |
Re: [Discuss-gnuradio] Simple band pass filter |
Date: |
Mon, 2 Jul 2012 16:01:46 +0100 |
Hello Nick,
Thanks for your reply, I want to know about the parameters for my bandpass
filter block?
So what parameters should give to my band_pass_filter as follows
high_cut_off=?
low_cut_off=?
sampling_rate should be less than 6.25MHz
transition band=?
Yes I want to use usrp2 source how do I update that ?
Umer
________________________________________
From: Nick Foster address@hidden
Sent: Monday, July 02, 2012 2:42 PM
To: Rabbani,U,Umer,DUB8 R
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] Simple band pass filter
Umer,
You have a filter with a sample rate of 1.7GHz. This is obviously incorrect.
Your filter must operate at the baseband rate; in the case of USRP2 with
decimation 16, as you have it set up, the filter will operate at
100Msps/16=6.25Msps. The filter cutoff frequencies must be similarly relative
to the baseband frequency, not absolute -- if you are tuned to 850MHz and want
a cutoff at 850.4MHz, you would specify a cutoff frequency of 400kHz.
Additionally, did you really mean to use the USRP2 source? The old USRP2 source
has been deprecated in favor of UHD for a very long time.
--n
On Mon, Jul 2, 2012 at 6:19 AM, <address@hidden<mailto:address@hidden>> wrote:
I have attached my GRC file with this email. I am getting the following error?
gr_buffer::allocate_buffer: failed to allocate buffer of size 43852 KB
Umer
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