Hi,

As I said in my previous mail, read the RSSI value from CC2420ControlC. 
As this value is the signal strength your radio receives while not 
actually receiving a message, this is the background noise.

Cheers,
Urs

On 12/6/10 7:26 AM, SHIVASANKAR GANESAN wrote:
>
> How to sample background Noise.
>
> **
> *With regards*
> *Sivasankar*
>
>
> --- On *Fri, 3/12/10, Urs Hunkeler /<urs.hunke...@epfl.ch>/* wrote:
>
>
>     From: Urs Hunkeler <urs.hunke...@epfl.ch>
>     Subject: Re: [Tinyos-help] Reg:Std Deviation of Gaussian Noise
>     To: "SHIVASANKAR GANESAN" <tata...@yahoo.co.in>
>     Cc: "tinyos-help@Millennium.Berkeley.EDU"
>     <tinyos-help@Millennium.Berkeley.EDU>
>     Date: Friday, 3 December, 2010, 2:06 PM
>
>     Hi,
>
>     The CC2420ControlC has a ReadRssi interface, which allows you to
>     read the RSSI while not actively receiving any message. You could
>     sample the background noise for a while, and then use standard
>     statistical methods to determine the noise level and the standard
>     deviation.
>
>     Cheers,
>     Urs
>
>     On 12/03/2010 07:54 AM, SHIVASANKAR GANESAN wrote:
>     > Hi
>     > How to measure Std Deviation of the Gaussian Noise,I need that
>     value for
>     > my experiment(I am using Micaz mote).
>     > **
>     > *With regards*
>     > *Sivasankar*
>
>

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