Math library

GNU Radio
#1

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

#2

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

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
mailing list [email protected]
https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iQEcBAEBAgAGBQJTKX2CAAoJEAFxB7BbsDrLU54IAIs3CyUPKb/qVKpKuhnxVLja
UievSFiExsjl64o5y5RfQ5L/nUgaLGNoxBzAzPqEkKBB2P0YA5NmQAr++6p48iJn
xhVTqET2IzcYbAu3LzG+oBF+sT4KC+fcjFxmW/xozLNjwXjSpyyXzI5cU0k+hrFE
zLpue+fWt3VPMEKs+5o00tN6nTtw9pVBVbGGsR1ECRiy6MjWAHGyGTn2t8S4n6Gz
rWuXDm0FvrvMn9wdEsbnQLFh/vnC0UddhJYPEwa8+fgwaTSsR1Gkq7BPov5WlEYT
87sUVL2pwcEs1N+kbqdlt5Um3ATW2Fmtw+aRZ4n8donf6Wq/HbU0cNM4gkVCOwE=
=SGox
-----END PGP SIGNATURE-----