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Communication Systems pp 157–180Cite as

Quadrature Amplitude Modulation

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Abstract

The Quadrature Modulation Scheme (QUAM) uses sine and cosine orthogonality properties to allow the transmission of two different signals in the same carrier, which occupies a bandwidth that is equivalent to the AM signal. The QUAM modulator can be assembled using two DSB-SC modulators. The information is transmitted by both the carrier amplitude and phase.

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References

  • Carlson, B. A. (1975). Communication Systems. Tokyo, Japan: McGraw-Hill.

    MATH  Google Scholar 

  • Gagliardi, R. (1978). Introduction to Communication Engineering. New York: Wiley.

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  • Haykin, S. (1988). Digital Communications. New York: Wiley.

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Authors and Affiliations

  1. Institute of Advanced Studies in Communications, Federal University of Bahia, Salvador, Paraíba, Brazil

    Marcelo S. Alencar

  2. Institute of Advanced Studies in Communications, Federal University of Pernambuco, Recife, Pernambuco, Brazil

    Valdemar C. da Rocha Jr.

Authors
  1. Marcelo S. Alencar
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  2. Valdemar C. da Rocha Jr.
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Corresponding author

Correspondence to Marcelo S. Alencar .

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Cite this chapter

Alencar, M.S., da Rocha Jr., V.C. (2020). Quadrature Amplitude Modulation. In: Communication Systems. Springer, Cham. https://doi.org/10.1007/978-3-030-25462-9_5

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  • DOI: https://doi.org/10.1007/978-3-030-25462-9_5

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-25461-2

  • Online ISBN: 978-3-030-25462-9

  • eBook Packages: EngineeringEngineering (R0)

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