MAC sublayer protocol
- To: email@example.com
- Subject: MAC sublayer protocol
- From: firstname.lastname@example.org (Barry McLarnon DGBT/DIP)
- Date: Tue, 15 Jan 91 09:42:32 EST
Steve Johnson writes:
>Are there other reasons besides spectrum usage that split frequency
>full duplex systems aren't used on packet? It does seem the simpler
>approach if enough spectrum is available.
Ah, but they *are* used - we've had a 56kb split frequency (220/433 MHz)
full duplex repeater running in Ottawa for more than a year now.
I think the major reason they aren't more common is simply inertia, and
perhaps some apprehension that they are difficult to build (they aren't).
I don't believe spectrum usage is a major factor. With various commercial
interests encroaching on our bands in the next few years, heavy spectrum
occupancy should have priority over maximum efficiency (within reason, of