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Discussion :: Communication Systems

  1. An AM signal and a narrowband FM signal with identical carriers, modulating signals and modulation index of 0.1 are added together. The resultant signal can be closely approximated by

    2. A.
    Broadband FM
    B.
    SSB with carrier
    C.
    DSB-SC
    D.
    SSB without carrier

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    Answer : Option B

    Explanation :

    s(t)AM + s(t)NBFM = A1 sin ωct + A2 cos ωct + (A - B) m

    m(t) sin ωct

    it will not be NBFM because μ = 0.1, and SSB with carrier.

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