Question

____________ arises from the fact that the spreading sequences of different users are not orthogonal.

(a) Near-far problem

(b) Line of sight

(c) Windowing

(d) Self jamming

I got this question in an interview.

I'm obligated to ask this question of Spread Spectrum Multiple Access in portion Multiple Access Techniques for Wireless Communications of Wireless/Mobile

Answer 1

Right choice is (d) Self jamming

The best explanation: Self jamming arises from the fact that the spreading sequences of different users are not orthogonal. Hence, in the despreading of a particular PN code, non zero contributions to the receiver decision statistic for the desired user arise from the transmissions of other users in the system.