Joe - Re CDMA - low energy, shorter wave amplitude, shorter distances, requires more towers, weaker handoffs between cells (???), more overall potential capacity, higher cost buildout.
The person who wrote that post says it himself - he isn't a technical expert, and in fact as Walt points out much of the above sentence makes no sense (I don't mean just that it is wrong, but that it is gibberish). In general Walt's post, the cdg website and previous posts cover this pretty well.
However, an interesting aside on his comment on cost of build-out. From a certain perspective it is true that CDMA is more expensive than TDMA. CDMA is significantly more complex than TDMA and thus connection per connection it involves more hardware and thus more cost. BUT:
1) Much of the hardware (and other capital costs) in a system is shared, and thus that cost gets split between more users. (Same thing is true of TDMA vs Analog).
2) The cell layout process for CDMA is, in theory, a much simpler process. This is a reasonably large percentage of the initial cost, and an even larger percentage of the cost to expand a system. (The only reason I say 'in theory' is that I know they were have problems initially, but I think that they have been overcome - I just don't know it.)
Clark |
