Re: [Discuss-gnuradio] RSSI (was: Re: Math library)

[Marcus Müller]

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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|²), 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:
> 
> 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
> 
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________ Discuss-gnuradio
> mailing list address@hidden 
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> 
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