What is the definition of point to point ? does the "point" mean single device or single antenna? I mean,can one transmitter with multiple antennas and one receiver with multiple antennas be called point to point ?or we should only call it MIMO?
If there are 2 transmitters,t1 & t2,and 2 receivers,r1 & r2,and t1 will send the message to r1,but r2 will also receive the RF of t1 ;t2 will send the message to r2,but r1 will also receive the RF of t2.So in this situation,is this system also point to point? or point to multi-point
If a receiver with multiple antennas ,and there are K energy harvesters, 4 antenna for each energy harvester,and 1 receiver with single antennas.What system can we call it?MISO?or MIMO?