Question

Which among the following is a requirement of observe phase?

(a) Large memory

(b) Large bus

(c) Precise clock

(d) Accurate timer

This question was addressed to me in an international level competition.

I'm obligated to ask this question of Architecture topic in division Cognitive Radio Architecture of Cognitive Radio

Answer 1

The correct answer is:

(c) Precise clock

Explanation: In the observe phase of cognitive radio or similar systems, a precise clock is essential to accurately monitor and track the changes in the radio environment or the system. A precise clock ensures that the observations made are synchronized in time, allowing for accurate data collection and analysis.

Here’s why the other options are less suitable for the observe phase:

• Large memory: While memory is important for storing data, the main requirement during the observe phase is the ability to monitor and track the environment accurately in real-time, which is more related to time synchronization.

• Large bus: A bus would be important for communication between components, but it's not specifically required for the observation phase.

• Accurate timer: While a timer is related to timekeeping, the term "precise clock" refers to synchronization and time measurement, which is more critical than a simple timer.

Thus, a precise clock is a key requirement for the observe phase in systems such as cognitive radio.