Draw a phasor diagram for an angle-modulated signal for (SNR) T >> 1 illustrating the relationship between
Question:
Draw a phasor diagram for an angle-modulated signal for (SNR)T >> 1 illustrating the relationship between R(t), Ac, and rn(t). Show on this phasor diagram the relationship between ψ(t), ϕ(t) and ϕn(t). Using the phasor diagram, justify that for (SNR)T >> 1, the approximation
ψ(t) ≈ ϕ(t) + rn(t) / Ac sin[ϕn(t) - ϕ(t)]
is valid. Draw a second phasor diagram for the case in which (SNR)T << 1 and show that
ψ(t) ≈ ϕn(t) + Ac / rn(t) sin[ϕn(t) - ϕ(t)]
What do you conclude?
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Step by Step Answer:
The phasor diagram for SNR 1 is illustrated in Figure 84 The phasor diagram ...View the full answer
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Related Book For 
Principles of Communications Systems, Modulation and Noise
ISBN: 978-8126556793
7th edition
Authors: Rodger E. Ziemer, William H. Tranter
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