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Hierarchical Circular θ-QAM

Seongjin Ahn,D. Yoon

Published 2021 in IEEE transactions on broadcasting

ABSTRACT

Hierarchical modulation provides unequal error protection to transmitted data according to their relative importance. In this article, hierarchical modulation constellation based on circular <inline-formula> <tex-math notation="LaTeX">$\theta $ </tex-math></inline-formula>-quadrature amplitude modulation (CTQAM), 4/<inline-formula> <tex-math notation="LaTeX">${M}$ </tex-math></inline-formula>-CTQAM, <inline-formula> <tex-math notation="LaTeX">$M = 2^{k}$ </tex-math></inline-formula>, <inline-formula> <tex-math notation="LaTeX">$k \geq 4$ </tex-math></inline-formula>, is proposed. We provide a construction method and bit-to-symbol mapping for the proposed hierarchical modulation constellation. We then examine the bit error rate performance of 4/<inline-formula> <tex-math notation="LaTeX">${M}$ </tex-math></inline-formula>-CTQAM and validate the theoretical results through computer simulations in additive white Gaussian noise (AWGN) and Rayleigh fading channels.

PUBLICATION RECORD

  • Publication year

    2021

  • Venue

    IEEE transactions on broadcasting

  • Publication date

    2021-03-01

  • Fields of study

    Mathematics, Computer Science, Engineering

  • Identifiers
    DOI 10.1109/TBC.2020.3031736
  • External record

    Open on Semantic Scholar

  • Source metadata

    Semantic Scholar

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