Radio Link


I'm looking at possible ways to design a radio link system.

The basic idea is for a lasertag environment. Each pack will carry a
radio tranceiver, and there will be communication points around the
arena.

I've looked at a few options, but i'm not sure what the best option
would be. I've seen the EasyRadio products which look good, they
provided a serial interface and seem suited to the application. I've
not done any testing, but it worries me that they sit on the same
frequency all the time - a perfect candidate for something giving off
interference on that frequency and killing the system.

I then looked at WiFi which offers spread-spectrum transmission. This
looks good but its complex to implement and appears to consume more
power. I'm also concerned that the frequency can be heavily used and
as a result quality of service could suffer. This has the plus that
cheap common WiFi access points can be used and linked to an ethernet
hub to allow for all the communication.

The main things I'm looking for are, cheap to implement, very reliable
(can't afford to have a centre with packs dropping on/off line), low
power usage (its a mobile app.). Its also a development time thing, I
can't afford to spend months writing TCP/IP layers etc! Any
suggestions?

Thanks in advance.

Mike

.

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