25 Mar
2019
25 Mar
'19
3:30 a.m.
Although my understanding of such things far from
complete, I have
heard that one of the biggest problems with high data rate radio
is "smearing" of the symbols by multipath, and that if you can
achieve little or no multipath (akin to analog TV "ghosting"), you
can use much less robust modulation schemes to achieve higher symbol
rates.
No doubt Guillaume can correct me on this.
- Brian
Brian,
Yes, I understand that. But he shows an omni at the central site. And a
directional antenna doesn't eliminate multi-path (although it can help
reduce it, depending on the source of the multi-path). So, I didn't want to
assume what he meant by " In order to achieve links with omnidirectional
antennas, you have to lower the datarate drastically".
Michael