Hello to all of you.
Im working on a project about cooperative spectrum sensing(cognitive radio)
and i have a problem.
I want to calculate the SNR (received power/power of noise) at each Cognitive Radio,but i dont know jow to calculate the received signal power(it must be dependent to the distance bettween the cognitive radio and the primary transmitter).
Thanks in advance,
M.Iatrou
please some help on this.
Assuming the distance between transmitter and recfceiver is d
and the transmitted signal is y
then the received power in the receiver using matlab is rec_pow=mean(y.^2)./(d.^4).
Is this correct?
We assume that the channel model is AWGN.Thank you very much.
Hi,
U can use Friis transmission equation to find the received power.This eqn gives received power in terms of transmitter power, gains of transmitting and receiving antennas , frequency of operation and path loss (which ofcourse includes distance)