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Unread 30-04-2012, 11:33
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Re: Intermittent connection on field only

Quote:
Originally Posted by mjcoss View Post
I originally believed that each robot was going to be assigned a separate channel and that they were using 802.11n @ 5 Ghz. The network at the MAR championship was indeed using 802.11n @ 5Ghz, and they are using a wide channel, however all robots were sharing the same channel and as such were sharing a total theoretically bandwidth of 300 Mbits.
I don't know of any wireless product that comes close to it's theoretical rating.

This year, I was running throughput testing for a demo board. At 10-30 feet in a quiet environment (as shown on a spectrum analyzer), we were achieving about 120 Mb/s out of a theoretical 300 Mb/s using IXChariot software.

If all robots are sharing one channel, that is pretty unnerving, especially given the throughput requirements for a single video feed.
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