Outage Probability and Cell Coverage

What does outage probability represent in wireless communication?

a: The likelihood that a transmitter will fail Explanation

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b: The probability that the received signal falls below a minimum threshold Explanation

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c: The probability of achieving maximum signal quality Explanation

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d: The average power of the transmitted signal Explanation

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What is the coverage area in a wireless communication system?

a: The area where a signal can be received with acceptable quality Explanation

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b: The area within a transmitter’s physical boundary Explanation

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c: The area where all users have maximum signal strength Explanation

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d: The area beyond which the signal strength is zero Explanation

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Outage probability depends on which of the following?

a: Target minimum received power Explanation

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b: Distance between transmitter and receiver Explanation

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c: Both A and B Explanation

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d: None of the above Explanation

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If a cell has a low outage probability, which of the following is likely true?

a: The cell has poor signal coverage Explanation

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b: The cell provides consistent signal quality Explanation

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c: Users frequently experience dropped calls Explanation

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d: The cell requires additional transmitters Explanation

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Which of the following is a common method to improve coverage in a wireless network?

a: Increase transmit power Explanation

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b: Reduce antenna height Explanation

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c: Use higher frequency bands Explanation

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d: Increase outage probability Explanation

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In practical systems, outage probability is often reduced by:

a: Deploying more base stations Explanation

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b: Using smaller antennas Explanation

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c: Reducing the number of users Explanation

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d: Increasing system noise Explanation

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A higher target signal-to-noise ratio (SNR) threshold generally leads to:

a: Lower outage probability Explanation

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b: Higher outage probability Explanation

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c: No change in outage probability Explanation

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d: Improved coverage area Explanation

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Which environment is most likely to have smaller coverage for the same transmit power?

a: Open rural area Explanation

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b: Dense urban area Explanation

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c: Suburban area Explanation

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d: Indoor open hall Explanation

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A cellular provider decides to upgrade the minimum required signal strength (Coverage Threshold) for their network from -90 dBm to -75 dBm to support high-speed video streaming. Assuming the environment and transmitter power remain identical, how will this affect the network's Outage Probability?

a: It will decrease, because a higher threshold means a stronger network. Explanation

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b: It will increase, because fewer locations will be able to meet the stricter power requirement. Explanation

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c: It will remain exactly the same, as the obstacles haven't moved. Explanation

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d: Outage probability will drop to 0%. Explanation

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When transitioning a wireless setup from a 'Rural' (Line-of-Sight dominant) to an 'Urban' (High Interference/Blockage) environment, which mathematical parameters in the log-distance path loss model are primarily affected?

a: The transmitter's inherent operating frequency. Explanation

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b: The path loss exponent and the log-normal fading standard deviation. Explanation

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c: The thermal noise floor of the receiver. Explanation

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d: The speed of light in the medium. Explanation

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