Higher-order modulation

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Higher-order modulation [1] is a type of digital modulation usually with an order of 4 or higher. Examples: quadrature phase-shift keying (QPSK), and m-ary quadrature amplitude modulation (m-QAM).

See also

References

  1. Wang, Lan; Dai, Jun Yan; Ding, Ke Seng; Zeng, Hong Xin; Cheng, Qiang; Yang, Zi Qiang; Zhang, Ya Xin; Cui, Tie Jun (22 November 2024). "High-order direct modulation terahertz communications with a wideband time-coding metachip modulator". science.org. Science Advances. pp. eadq8693. doi:10.1126/sciadv.adq8693 . Retrieved 25 July 2025.