Explanation: Eb/N0 curve has waterfall shape. Shannon limit gives the threshold value below which reliable communication cannot be maintained. 2. M-ary signalling produces _______ error performance with orthogonal signalling and _______ error performance with multiple phase signalling.
A. Degraded, improved
B. Improved, degraded
C. Improved, improved
D. Degraded, degraded
Answer:A
Explanation: Eb/N0 curve has waterfall shape. Shannon limit gives the threshold value below which reliable communication cannot be maintained. 2. M-ary signalling produces _______ error performance with orthogonal signalling and _______ error performance with multiple phase signalling.
A. Degraded, improved B. Improved, degraded C. Improved, improved D. Degraded, degraded
Explanation: In M-ary signalling as k increases, the curve moves towards the degraded error performance. It produces improved error performance in case of orthogonal signalling and degraded error performance in case of multiple phase signalling.