Summary
2020
Session Number:A06
Session:
Number:A06-4
Simplification of the Calculation of the Channel Matrix for AMPM Coherent-state Signals
Ryusuke Miyazaki, Mana Yoshida, Tiancheng Wang, Tsuyoshi Usuda,
pp.121-125
Publication Date:2020/10/18
Online ISSN:2188-5079
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Summary:
The square-root measurement (SRM) is regarded as the optimum quantum measurement for symmetric signals and quasi-optimum measurements for any quantum signals. Therefore, deriving formulae for the channel matrix by using SRM is crucial in developing a theory of quantum communications. To date, formulae for these matrices are known for symmetric and group-covariant signals.
However, there are important non-symmetric signals such as ASK, AMPM, and QAM signals, etc.
In this paper, we demonstrate that the calculation of the channel matrix for 4$m$-ary AMPM signals can be simplified by using their partial symmetry.