Signal Demodulation Method in the PD-NOMA System Using a Nonlinear Algorithm with Successive Cancellation of Demodulated Components

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Abstract

A method for signal demodulation in a system with power-domain non-orthogonal multiple access is proposed. The method implements the principle of successive cancellation of demodulated components taking into account the variance of the estimation error and using a nonlinear function. The results of simulation of the proposed method in a cellular communication system are presented: the use of the proposed method allows an improvement by 1–3.5 dB compared to known algorithms, depending on the power ratio of signals transmitted by three user terminals.

About the authors

V. B. Kreindelin

Moscow Technical University of Communications and Informatics

Email: vitkrend@gmail.com
Moscow, 111024 Russia

L. A. Varukina

Moscow Technical University of Communications and Informatics

Author for correspondence.
Email: vitkrend@gmail.com
Moscow, 111024 Russia

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