25 Mar
2019
25 Mar
'19
7:30 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