On p.27 of The Audio Expert, it talks about delayed radio signals from the person moving around. However, I'm under the impression that for a problem to occur, the delayed signal has to be combined with the direct signal. How is that happening in a non-diversity system as opposed to a diversity one?
Post by Michael Lawrence on Jun 4, 2020 23:50:02 GMT
Radio waves reflect off things, just like sound waves. If you get a direct + a reflection arriving at the mic, they can combine in an unhelpful way and you can get a dropout. It's called multipath fading and is why the radio sometimes fades in and out as you drive through a city. A diversity configuration reduces the problem because the odds are low that you will experience dropouts at both antennae simultaneously. With a non-diversity system, you only have a single Rx antenna so you get what you get, in a manner of speaking.
Post by Michael Lawrence on Jun 5, 2020 2:38:39 GMT
Don't know much about 5G but in general, yes, a transmitter with a higher directivity should be more successful at keeping the energy from bouncing off off-axis surfaces. Same idea with designing PA systems. "Point loud side towards audience."