From storm bringers post, where he explains how high capacity digital signals are transmitted.

Though on second glance, tdm and fdm are almost certainly the same thing I would think..

Actual definitions of the two, since my explanation was apparently not clear enough. I can see how I might be confused though since my explanation comes from actually working with these different technologies over the years.

Frequency-division multiplexing (FDM) is a scheme in which numerous signals are combined for transmission on a single communications line or channel. Each signal is assigned a different frequency (subchannel) within the main channel.

Time-division multiplexing (TDM) is a method of putting multiple data streams in a single signal by separating the signal into many segments, each having a very short duration. Each individual data stream is reassembled at the receiving end based on the timing.


Also, doesn't really matter what the man on the street thinks, misinformation is still false, end users think a lot of things, and lots of these things are accepted as truth, sadly most are still very false. The industry does nothing to correct this misinformation and if anything, makes it worse. No harm done, right? Wrong, in the long run, both the end user and those who have to support and manage the end user's equipment end up paying for these false truths.

I for one get very sick of seeing marketing strategies which tout speed, range, and other specs which have little or nothing to do with what they actually do. A very good example here, while somewhat off topic is Centrino. Intel markets it as gods gift to wi-fi, though it has very little to do with wireless networking and everything to do with battery life.

So, could you tell me StormBringer, at least in terms of the jist of it, would I be correct in saying that the two are almost identical technologies, where FDM is an application splitting the frequency for the purpose of carryinglarger amounts of data (in parralell if you like) accross the same datastream, IE, Broadband for example.

TDM by contarst, is roughtly the same, but instead of the above, a frequency is divided not only to carry large amounts of data, but also to carry multiple datastreams (such as a Sky sattelite transmition, here in the UK).?

... Or do I need to do some research to understand it a little better?