Question

Spatial nulling subsystem replaces three element sectors of conventional base station with ____ disposed antenna elements.

a.

four spherically

b.

eight spherically

c.

four circularly

d.

eight circularly

Posted under Cognitive Radio

Answer: (d).eight circularly Explanation:Spatial nulling subsystem replaces three element sectors of conventional base station with eight circularly disposed antenna elements. The signal is then preamplified and converted to digital form using eight wideband ADCs.

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Q. Spatial nulling subsystem replaces three element sectors of conventional base station with ____ disposed antenna elements.

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