单项选择题
Which of the following will not increase system capacity? （）
A. Increasing the number of available frequencies.
B. Changing the modulation scheme.
C. Implementing half rate vocoders
D. Going from a 4/12 to a 3/9 reuse pattern.
E. Splitting cells
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相关考题
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单项选择题
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. Contract with owner
E. Availability of transmission to the BSC -
单项选择题
Which cell pattern is recommended for use with frequency hopping?（）
A. 4/12
B. 3/9
C. 7/21
D. 7/7
E. None of these -
单项选择题
What does Grade of Service (GoS) mean? （）
A. Number of available subscriber services
B. Number of unsuccessful call set-ups due to congestion
C. Channel utilization
D. Number of successful call set-ups
E. Number of dropped calls
