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Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information
From: |
Johnathan Corgan |
Subject: |
Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information |
Date: |
Fri, 9 May 2008 07:18:05 -0700 |
On Fri, May 9, 2008 at 2:22 AM, Bastian Preindl <address@hidden> wrote:
> As we're not the operator of the satellites, it is impossible to know
> the data we'll receive beforehand and make a comparison afterwards to
> calculate the bit error rate. So I have to count on information I can
> gain from the received signal characteristics.
If you use the USRP, you will obtain a complex baseband representation
of your satellite signal. From this, you will need to implement a
demodulator for the particular signal involved. From the output of
the demodulator, there are several ways to estimate signal-to-noise
ratio that do not require prior knowledge of the bit pattern. From
the signal-to-noise ratio, you can estimate the theoretical bit error
rate for the type of modulation in use. See:
http://www.comsoc.org/comm/private/2000/oct/1681_48comm10-pauluzzi.html
GNU Radio is very suitable for this sort of thing.
--
Johnathan Corgan
Corgan Enterprises LLC
http://corganenterprises.com/
- [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information, Bastian Preindl, 2008/05/09
- Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information,
Johnathan Corgan <=
- Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information, Bastian Preindl, 2008/05/09
- Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information, Johnathan Corgan, 2008/05/09
- Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information, Bastian Preindl, 2008/05/09
- Re: [Discuss-gnuradio] Gaining RSSI, SNR, CNR or BER information, Johnathan Corgan, 2008/05/09