Question

In ____ antenna, the interface boundary between radio and antenna is blurred.

(a) multiple input multiple output

(b) single input single output

(c) single input multiple output

(d) multiple input single output

This question was addressed to me at a job interview.

I need to ask this question from Hardware Architecture in portion Software Defined Radio Architecture of Cognitive Radio

Answer 1

The correct choice is (a) multiple input multiple output

Easy explanation: Wide bandwidth, large number of parallel receivers, and modem signal processing blur the interface boundary between radio and antenna in multiple input multiple output antennas.