How to calculate number of frames successfully reached in aloha and slotted aloha?
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Consider a system generating 20 bit frames and connected through a shared 20kbps channel. Find throughput in percent if slotted ALOHA is used and frame rate is 1000 fps.
Frame size = L = 20 bits
Rate = R = 20kbps
Transmission time,T = L/R = 1 * 10-3 s
Throughput, S = G e-G, where G= Number of frames per T
So, G = 1000 * 10-3 = 1
Therefore, S = e-1 = 0.368 = 36.8%
Frame size = L = 20 bits
Rate = R = 20kbps
Transmission time,T = L/R = 1 * 10-3 s
Throughput, S = G e-G, where G= Number of frames per T
So, G = 1000 * 10-3 = 1
Therefore, S = e-1 = 0.368 = 36.8%
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