I've been reading about spread spectrum and I don't see how spread
spectrum techniques could be used for continuous transmissions.

      Everyone seems to want to convert everything to spread spectrum
because of its greater efficiency. I don't see how it could be any more
efficient when used on continuous transmissions such as a TV video signal.
The following assumes that they would keep the signal in the analog form.
If you have four available channels with four TV stations and you implement
the freq hopping method, then all four channels will always be full because
the TV stations would never have a pause to allow a fifth channel to
transmit. If you where to use a method similar to TDMA, then you would see
little gaps in the picture.
It seems to me that the only way the "more efficient" spread spectrum
methods could be used would be to convert the signal to a digital form so
it could be buffered on the TV side while the transmission ceased for
whatever amount of time.

      Is there something I'm missing? Maybe the whole concept?




-Brandon Irwin






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