[INAUDIBLE]
DPC was invented in the early' 90s' 92, 93 ish by several groups including one in
[UNKNOWN].
This is an algorithm, it is a distributive algorithm, it is an iterative algorithm.
Now what is an algorithm?
Roughly speaking it is a sequence of computational steps.
That is finite and when I stop it accomplishes
certain task, in this case solving this power control problem.
it is distributed, this actually is a very fuzzy
word, it is hard to exactly pin down its definition.
We are going to see a very distributed solution today and later
in the course, we'll see many
other variants of, sort-of distributed solutions.
But roughly speaking, distributed means that the
network elements, in this case, the transmitter and
receivers, do not need to talk to
each other too much, with explicit message passing.
This is also iterative algorithm. So the
[UNKNOWN]
solution, for example, is not iterative.
You just estimate a channel and then you tell
the receiver what to do, it's a one shot