Modulation scheme

Description

A sphere packing mapped into a time-dependent electromagnetic signal [1][2]. There is a close relation between abstract real-space encodings and modulation schemes, and certain simple sphere packings are often synonymous with their corresponding modulation schemes.

Linear modulation schemes encode points into amplitudes of electromagnetic waveforms. Pulse-amplitude modulation (PAM) associates each point with a real-valued amplitude of one quadrature of an electromagnetic waveform [2; Sec. 10.5]. Quadrature amplitude modulation (QAM) associates each pair of points with a complex-valued two-quadrature amplitude of band-limited signal [2; Ch. 16].

Parent

Children

References

[1]
J. K. Wolf et al., editors , Coded Modulation Systems (Kluwer Academic Publishers, 2002) DOI
[2]
A. Lapidoth, A Foundation in Digital Communication (Cambridge University Press, 2017) DOI
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Zoo Code ID: modulation

Cite as:
“Modulation scheme”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2023. https://errorcorrectionzoo.org/c/modulation
BibTeX:
@incollection{eczoo_modulation, title={Modulation scheme}, booktitle={The Error Correction Zoo}, year={2023}, editor={Albert, Victor V. and Faist, Philippe}, url={https://errorcorrectionzoo.org/c/modulation} }
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Cite as:

“Modulation scheme”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2023. https://errorcorrectionzoo.org/c/modulation

Github: https://github.com/errorcorrectionzoo/eczoo_data/tree/main/codes/classical/analog/modulation/modulation.yml.