Re: two questions about the general communication system

GNU Radio
1

Thank you George!

I am just wondering when we calculate BER, how can we determine the
value of bit energy? Thank u!

Bill

----- Original Message ----
From: George N. [email protected]
To: Bill S. [email protected]
Sent: Sunday, April 13, 2008 1:01:21 PM
Subject: Re: [Discuss-gnuradio] two questions about the general
communication system

I mean that GNU Radio is not a programming language. It’s simply not.

Google “python random number generator”

  • George
2

On Sun, Apr 13, 2008 at 2:38 PM, Bill S.
[email protected] wrote:

Thank you George!

I am just wondering when we calculate BER, how can we determine the value of
bit energy? Thank u!

There’s a good article (with commentary from Phil Karn as well) located
here:

http://www.sss-mag.com/ebn0.html

Enjoy.

Brian

3

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On Apr 13, 2008, at 1:28 PM, Brian P. wrote:

On Sun, Apr 13, 2008 at 2:38 PM, Bill S.
[email protected] wrote:

Thank you George!

I am just wondering when we calculate BER, how can we determine the
value of
bit energy? Thank u!

If you look through the relevant emails on the list, it seems no one
really understands the translation between the short values from the
USRP and absolute energy — ADC and processing behavior complicate
the issue. However, it is much easier to estimate the ratio of Signal
to Noise — this is a relative quantity. Just figure out receiver
power in the absence of a signal and in the presence of one…

  • -Dan
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