Question about path loss exponent estimation from measurment

1. How do you find the path loss exponent?
2. What is the value of path loss exponent in free space path loss model?
3. How is the path loss related to the gain and power of the transmitting and receiving antenna?

How do you find the path loss exponent?

1. where P_R is the received signal power, P_T is the transmitted signal power, d₀ = 100 meters is a propagation constant, d is the propagation distance, and α is the path loss exponent.

What is the value of path loss exponent in free space path loss model?

In the study of wireless communications, path loss can be represented by the path loss exponent, whose value is normally in the range of 2 to 4 (where 2 is for propagation in free space, 4 is for relatively lossy environments and for the case of full specular reflection from the earth surface—the so-called flat earth ...

How is the path loss related to the gain and power of the transmitting and receiving antenna?

As a result of path loss, the received signal power level is several orders below the transmitted power level. The received power level is dependent on factors such as transmission power, antenna gains, frequency of operation and the distance between the transmitter and the receiver.