Consider a TDMA system with K = 2 users in an AWGN channel. Suppose that the two transmitters are average-power-limited, with powers P1 and P2. User 1 transmits 100a percent of the time and user 2 transmits 100(1 − α) percent of the time. The channel bandwidth is W.
a. Determine the capacities C1, C2, and C = C1 + C2 as functions of α.
b. Plot the graph of the points (C2,C1) as α varies in the range 0 ≤ α ≤ 1.
c. What is the similarity between this solution and the FDMA system in Problem 16.3?
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