Hw6_solution

Hw6_solution - ELEC315HW6SOLUTION 1 a 600bits 5Mbps 5 10 s 1.2 10 1 5 e 1 b 82.75 2 M e 1 s 1 5 10 s 44.44 2 a ,theprobabilityofa .5. 2 10M

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ELEC315 HW6 SOLUTION 1 a) ܶ ୮୰୭୮ ଵ଴଴଴୫ ଶൈଵ଴ ୫/ୱ ൌ5ൈ10 ି଺ s ܶ ୲୰ୟ୬ୱ 600bits 5Mbps ൌ1 .2ൈ10 ିସ s eൌ 1 1൅ ୮୰୭୮ ܶ ୲୰ୟ୬ୱ ൎ 82.75% b) ܶ ୲୰ୟ୬ୱ ଺଴଴ୠ୧୲ୱ ଷ଴mୠ୮ୱ ൌ2ൈ10 ିହ s eൌ 1 1൅ ୮୰୭୮ ܶ ୲୰ୟ୬ୱ ൎ 44.44% 2 a) Because the number of stations at both sides of the bridge is equal, the probability of a transmission to pass the bridge is 0.5. The total capacity is given by: Cൌ 2 ൈ 10M ሺ1 ൈ 0.5 ൅ 2 ൈ 0.5ሻ ൌ13 .33Mbps b) Because the number of stations at both sides of the bridge is equal, the probability of a transmission not to pass the bridge is 0.2. The total capacity is given by: Cൌ 5 ൈ 10M ሺ1 ൈ 0.2 ൅ 2 ൈ 0.8ሻ ൌ27 .78Mbps
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This note was uploaded on 10/16/2011 for the course ELEC 308,315,10 taught by Professor Prof.shenghuisong during the Spring '11 term at CUHK.

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Hw6_solution - ELEC315HW6SOLUTION 1 a 600bits 5Mbps 5 10 s 1.2 10 1 5 e 1 b 82.75 2 M e 1 s 1 5 10 s 44.44 2 a ,theprobabilityofa .5. 2 10M

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