Short distance high speed wired communication options?

Hello,

Just looking at options available for two wired 30-40m distance communication upto data rates of 15MBps? Can we have a detailed discussion on the available options.

Thanks.

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wolfgangfriedrich over 2 years ago +3

The only solution that comes to mind is single pair ethernet.
colporteur over 2 years ago +3

/learn/publications/ebooks/w/documents/27790/fundamentals-of-single-pair-ethernet---ebook There is an ebook available on SPE that might provide some insight. /technologies/connector/w/documents/23123…
BigG over 2 years ago +2

Similar to Ethernet based solution but using power lines... www.tp-link.com/.../

wolfgangfriedrich over 2 years ago

The only solution that comes to mind is single pair ethernet.
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BigG over 2 years ago

Similar to Ethernet based solution but using power lines... www.tp-link.com/.../
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dougw over 2 years ago

It isn't exactly wire but a fiber optic ethernet link might also work.

If you need a simpler protocol, you could run RS-485 over fiber. (because the wired version of RS-485 can't go that far at that speed)
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shabaz over 2 years ago

It would also help to know precisely what the use-case is. It sounds odd to want such a data rate for this type of distance. It's not clear if the communication needs to support both directions, and whether what you're transmitting can support error-handling, or if you expect that to be supported by a lower-layer.

What is the use-case?
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michaelkellett over 2 years ago

Strange, I replied to this yesterday but the reply has vanished.

I suggested that you need to provide a good deal more information about the context because that will drive the solution.

For PC - PC communciations (or SBC to SBC) then standard Gbit Ethernet is the obvious answer.

If it's FPGA - FPGA then LVDS would be possible.

Several of the answers you have had already seem to have missed that you want 120 Mbps, but untill you define other things a good answer is not possible.

MK
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colporteur over 2 years ago

/learn/publications/ebooks/w/documents/27790/fundamentals-of-single-pair-ethernet---ebook

There is an ebook available on SPE that might provide some insight.

/technologies/connector/w/documents/23123/single-pair-ethernet-quiz?ICID=connector

this was a SPE quiz offered a while ago.

/technologies/connector/w/documents/23242/single-pair-ethernet-quiz-resource

and the resources for it.
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beacon_dave over 2 years ago in reply to dougw

Or if you can't decide between fiber and wire...

https://youtu.be/rQKx2nwiVyQ?t=159
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wolfgangfriedrich over 2 years ago in reply to colporteur

Thanks for posting the links. I had those in mind when suggesting SPE.
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