Re: [Discuss-gnuradio] question about the receiver sensitivity

[Matt Ettus]

Bill Stevenson wrote:
> Hello, all
>
> I am using USRP1 board with RFX Transceivers and I want to know the 
> receiver sensitivity of the daugterboards. For example, for BER less 
> than 1e-5 and data rate 54Mbps, the 802.11a standard specifies the 
> receiver sensitivity to be at least -65dbm. Once the receiver 
> sensitivity is known, the transmission range will be determined, so i 
> want to know the sensitivity for the RFX boards. Could anyone tell me? 
> Thank you!

Sensitivity is a very hard parameter to define, since it depends on many 
factors including the modulation system in use.  The best way to spec a 
general radio is with the noise figure.  The RFX boards all have a noise 
figure in the 6-10 dB range.  If you need one lower than that you can 
use an LNA in front of it.

Matt