Math library

Hi,
This is the first time I send email to GNURadio Mailing List. Very glad
to exchange ideas to all members.

Recently, I want to extract RSSI from USRP N210. Is there any system to
extract RSSI,or I have to build system by myself?

In GRC, is there any library that has math module to calculate square
and square root

best,
wishes

owenzhang

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Hi Owenzhang,

welcome to the mailing list!

GRC is a tool to construct flow graphs of GNU Radio blocks; there is
no “math library” in GRC, but there are blocks that perform
mathematical operations. Since you are probably looking for
sqrt(|x|), try using the “Complex to Mag” Block.

As a side node, since this topic appears about every two months on
this mailing list: RSSI doesn’t “specify” anything particular. You
will have to have a model for your signal to explain what a received
signal strength is – this is something totally different for
different transmission methods. Therefore, there can never be a single
system to extract RSSI!

Greetings,
Marcus

On 19.03.2014 10:14, ?? wrote:

_______________________________________________ Discuss-gnuradio
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