OPTIMIZATION OF RELIABILITY INDICATORS IN A COMMUNICATION CHANNEL WITH MULTI-POSITION MANIPULATION AT A FIXED ENERGY RESOURCE

Abstract

This paper investigates the strategic
selection of modulation types to enhance reliability performance under strict power constraints. The authors
propose a methodology for optimizing communication reliability through what is termed an energy
maneuver. The core idea is that under a fixed energy budget, transitioning to higher-order modulations
allows for converting spectral efficiency into significant reliability gains without increasing transmitter
power.
The study is based on the development of a graphical tool in the form of a nomogram, created within
a software environment using established theoretical models. By analyzing the distance between signal
constellation points, the research provides a precise estimation of bit error probability across various
scenarios. The work demonstrates that adaptively choosing the signal positionality provides a logarithmic
increase in the energy weight of each symbol. Specifically, it is proven that moving from basic binary
modulation to schemes with more states can reduce the error probability by a factor of ten. The findings are
practically significant for developing adaptive modulation algorithms in modern wireless networks, which
is crucial for extending the battery life of autonomous devices and ensuring efficient frequency resource
utilization.
Keywords: bit error rate, binary phase shift keying, quadrature phase shift keying, quadrature
amplitude modulation, energy resource, nomogram, noise immunity, energy maneuver.

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