單項(xiàng)選擇題Which of the following will not increase system capacity? （）

A.Increasing the number of available frequencies.
B.Introducing double BA-lists
C.Implementing half-rate vocoders.
D.Going from a 4/12 to a 3/9 reuse pattern.
E.Splitting cells.


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1.單項(xiàng)選擇題What is used to prevent ‘ping-pong effects’, that is, rapid, successive handovers? （）

A. Discontinuous Transmission
B. Hysteresis
C. Dynamic Power Control
D. Frequency Hopping
E. Cell Load Sharing

3.單項(xiàng)選擇題What is the point of using a combiner? （）

A. Up to four sites can share one PCM link.
B. Several TRXs can share one antenna system.
C. The mobile can listen to two base stations at the same time.
D. Only one base station is needed per site.
E. Sending and transmitting can be performed from the same antenna.

4.單項(xiàng)選擇題Which of the following is not necessary to consider when surveying a potential site? （）

A. Space for antennas
B. Frequency allocation
C. Electrical power availability
D. Permission/Contract with owner
E. Availability of PCM link to the BSC

5.單項(xiàng)選擇題A subscriber makes a two-minute call and a four-minute call during the busy hour. How much traffic does he generate for that hour? （）

A.33 millierlangs
B.66 millierlangs
C.100 millierlangs
D.10 millierlangs
E.25millierlangs