Co-Channel Interference Quiz B

What is co-channel interference?

• Interference caused by physical obstacles

• Interference from multiple channels in the same frequency band

• Interference from different cell sites

• Interference from adjacent channels

What is the typical cell reuse pattern mentioned for reducing co-channel interference?

• K=6

• K=5

• K=4

• K=7

What happens when K is increased beyond 7?

• Eliminates co-channel interference

• Increases spectrum efficiency

• Reduces the number of channels per cell

• Increases the number of channels per cell

What is the minimum C/I ratio for a properly designed system?

• 20 dB

• 18 dB

• 15 dB

• 10 dB

What does the term 'carrier to interference ratio' (C/I) refer to?

• The ratio of carrier signal to interference signal

• The ratio of noise to interference

• The ratio of signal strength to noise

• The ratio of total power to received power

What is the effect of using directional antennas in a cellular system?

• Increases the number of interferers

• Reduces co-channel interference

• Decreases the signal strength

• Increases the coverage area

What is the co-channel interference reduction factor for K=7?

• 8.1

• 6.0

• 4.6

• 2.5

What is the primary advantage of using a six-sector directional antenna system?

• Increases the cell size

• Simplifies channel assignment

• Reduces co-channel interference

• Increases the number of channels

What is the impact of lowering antenna height on co-channel interference?

• Increases interference

• Reduces interference

• Increases signal strength

• Has no effect

What is the effect of traffic increase on the number of frequency channels assigned in a cell?

• Increases the efficiency of frequency reuse

• Has no effect

• Decreases the number of channels

• Increases the number of channels