satellite assignment
SATELLITE, MOBILE AND PERSONAL COMMUNICATION ASSIGNMENT
=CONTENTS=
PROBLEM NUMBER PAGE NUMBER
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3.30 12
3.31 14
3.32 16
3.33 18
3.34 20
3.38 24
3.39 27
3.40 29
3.41 30
1. A total of 24MHz of BW is allocated to a particular FDD cellular telephone system that uses two 30KHz simplex channels to provide full duplex voice and control channels. Assume each cell phone user generates 0.1 Earlangs of traffic. Assume Earlang B is used.
a. Find the number of channels in each cell for a four-cell reuse system.
b. If each cell is to offer capacity that is 90% of perfect scheduling, find the maximum number of users that can be supported per cell where omnidirectional antennas are used at each base station.
c. What is the blocking probability of the systems in (b) when the maximum number of users are available in the users pool?
d. If each new cell now uses 120° sectoring instead of omnidirectional for each base station, what is the new total number of users that can be supported per cell for the same blocking probability as in (c)?
e. If each cell covers five square Km, then how many subscribers could be supported in an urban market that is 50Km * 50Km for the case of omnidirectional box station antennas?
f. If each cell covers five square Km, then how many subscribers could be supported in an urban market that is 50Km * 50Km for the case of
=CONTENTS=
PROBLEM NUMBER PAGE NUMBER
1 3
2 5
3 7
4 8
5 10
3.30 12
3.31 14
3.32 16
3.33 18
3.34 20
3.38 24
3.39 27
3.40 29
3.41 30
1. A total of 24MHz of BW is allocated to a particular FDD cellular telephone system that uses two 30KHz simplex channels to provide full duplex voice and control channels. Assume each cell phone user generates 0.1 Earlangs of traffic. Assume Earlang B is used.
a. Find the number of channels in each cell for a four-cell reuse system.
b. If each cell is to offer capacity that is 90% of perfect scheduling, find the maximum number of users that can be supported per cell where omnidirectional antennas are used at each base station.
c. What is the blocking probability of the systems in (b) when the maximum number of users are available in the users pool?
d. If each new cell now uses 120° sectoring instead of omnidirectional for each base station, what is the new total number of users that can be supported per cell for the same blocking probability as in (c)?
e. If each cell covers five square Km, then how many subscribers could be supported in an urban market that is 50Km * 50Km for the case of omnidirectional box station antennas?
f. If each cell covers five square Km, then how many subscribers could be supported in an urban market that is 50Km * 50Km for the case of