Hello everyone.
In CC2420 data sheet. it specifies the high sensitivity (-95dBm).
Received power in cc2420 can be drived from RSSI value. (P = RSSI + Offset
(-45dB))
The minimum RSSI value was -49dBm in my experiment. Therefore received power
-94dBm was the minimum power in Tmote Sky.
Can i co
Yes, you can compare these powers directly. The sensitivity threshold
is -95 dBm, and consequently CC2420 will not report RSSI below that
threshold. The RSSI reported is the absolute measure of the energy
in the incoming signal; you can access RSSI when there is no packet
being received, and the
Thanks you for your advices.
We want to derive a accurate SINR of incoming packet.
Then, can i understand that received signal power in cc2420 data sheet means
the SINR of incoming packet?
It seems after we consider the offset value (-45dB) it provides the
SINR from RSSI value.
Moreover, if we st
On Wed, 2007-02-07 at 13:09, Robert Szewczyk wrote:
> Yes, you can compare these powers directly. The sensitivity threshold
> is -95 dBm, and consequently CC2420 will not report RSSI below that
> threshold. The RSSI reported is the absolute measure of the energy
> in the incoming signal; you can
In 5.1, which manufacturer(s) provided the nodes in the testbed?
Mixing nodes from different manufacturers (ie, Berkeley Telos, Moteiv
Tmote Sky, and/or TelosB clones from others) can be the cause of the
"stray" node.
On 2/7/07, Philip Levis <[EMAIL PROTECTED]> wrote:
On Wed, 2007-02-07 at 13:09
On Feb 8, 2007, at 2:09 PM, Joe Polastre wrote:
In 5.1, which manufacturer(s) provided the nodes in the testbed?
Mixing nodes from different manufacturers (ie, Berkeley Telos, Moteiv
Tmote Sky, and/or TelosB clones from others) can be the cause of the
"stray" node.
Those are all Berkeley Telos
We have a question on monitoring of environment by reading RSSI values
continuously from RSSI register. We ran an experiment, where two nodes
exchange messages between them and continuously read the RSSI values from
both the received packet and RSSI register. We could not observe any change
in RSS
On Feb 10, 2007, at 3:43 PM, Madhu Mudigonda wrote:
We have a question on monitoring of environment by reading RSSI
values continuously from RSSI register. We ran an experiment, where
two nodes exchange messages between them and continuously read the
RSSI values from both the received packe
Hi Madhu, Trisul,
RSSI is not the same as the signal to noise ratio. Having a high RSSI
value can also mean that in addition to the desired signal there is a
high noise level, which could then actually lead to the packet being
dropped (too much interference). So if you have a static link and
On Fri, 2007-02-09 at 09:37, Philip Levis wrote:
>
> Those are all Berkeley TelosB nodes; they are the Omega testbed.
>
> Section 6.1 reports the variations across the mirage testbed of micaz
> nodes.
>
> We have data for telosb's from a variety of manufacturers (moteiv,
> crossbow, berkele
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