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Newbie needs wireless help

mattmunee

I'm beginning a new sensing system development, and this will be the first time that my company's done anything with wireless.  I have absolutely no experience, so please excuse my utter ignorance, and please talk to me like a 3 year old.  The problem is, we want to transmit at least 120kB/s and possibly up to 100MB/s from our system to a host computer at least one mile away.  It also has to be small (preferably the size of  a zigbee board or similar) and low-power (let's say 500mW max).  There is the possibility that we could stream data from our system to a beefy middle-man nearby that could then transmit the data on to the host computer.  In that case, the constraints on my system are still there, but the middle-man could be as bulky and hungry as necessary.  Can anyone please help me get started?  Typical devices, protocols, manufacturers, development kits, etc.  Anything will help.  Thank you!!!

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  • Hi Matt, 100Mbyte/sec is very high throughput (and 120kbyte/sec is high too). I think the only convenient way could be an

    optical link or some microwave link maybe. These won't be the size of a zigbee board. If your application is sensing, you may not need this throughput (unless you're transmitting multiple high-def video streams).

  • in reply to shabaz

    Unfortunately, that is in fact our data rate.  We have two different options: dumping raw data or processing on-board and streaming down-sampled data.  Our raw data is far higher resolution than anyone (except us) really needs, and it amounts to about 85MB/s.  We MIGHT be able to process on-board and still meet our desired update rate requirements.  If so, at that point we can down-sample our data significantly.  I threw out 120kB/s, but we could probably get away with 20kB/s or so.  If so, does that open up more options?

  • in reply to mattmunee

    Hi Matt,

     

    A 100mW wifi module (i.e. 20dBm) with a directional antenna could work, see this link where Cian was able to see networks 2.5km away. Another alternative would be to use a mobile network, e.g. a 3G module.

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