Question

In which technique RF is amplified until it is hard-limited into a square wave?

a.

Super heterodyne receiver

b.

One-bit direct conversion digital receiver

c.

Two-bit direct conversion digital receiver

d.

Phase crossing counter receiver

Posted under Cognitive Radio

Answer: (b).One-bit direct conversion digital receiver Explanation:One-bit direct conversion digital receiver amplifies RF until it is hard limited into a square wave. An advantage of this architecture is that the channel states are stored in lookup tables.

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Q. In which technique RF is amplified until it is hard-limited into a square wave?

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