Method for superimposing data on amplitude-modulated signals

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Method for superimposing data on amplitude-modulated signals

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© The Institution of Electrical Engineers
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The principles of a new modulation scheme are described which permit an additional data channel to be superimposed on conventional DSBAM signals without increasing band-width or envelope distortion. This scheme, named zero synchronous frequency modulation (ZSFM), requires additional signal processing and provision for combined AM/FM at the transmitter. At the receiver, the data signal is detected by a simple frequency demodulator, while envelope detection of the AM signal is performed in the usual way.

Inspec keywords: signal detection; frequency modulation; amplitude modulation; signal processing

Other keywords: ZSFM; envelope detection; zero synchronous frequency modulation; data superimposition method; DSBAM signals; frequency demodulator; amplitude-modulated signals; double sideband amplitude modulation; AM/FM; signal processing

Subjects: Modulation and coding methods; Signal processing and detection

References

    1. 1)
      • T.H. Crystal , L. Ehrman . The design and application of digital filter with complex coefficients. IEEE Trans. , 315 - 320
    2. 2)
      • H.B. Voelcker . Toward a unified theory of modulation, part II: zero manipulation. Proc. IEEE , 735 - 755
    3. 3)
      • G.B. Lockhart . A spectral theory for hybrid modulation. IEEE Trans. , 790 - 800
    4. 4)
      • Whythe, D.J., Ely, S.R.: `Data and identification signalling for future radio receivers', 166, IEE Conf. Publ., 1978, p. 324–326.
    5. 5)
      • Ely, S.R.: `The impact of radio-data on broadcast receiver', IERE conference on ratio receivers and associated systems, 7–9 July 1981, Leeds, p. 349–362.
    6. 6)
      • A.A.G. Requicha . The zeros of entire function: theory and engineering applications. Proc. IEEE , 308 - 328
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