Banca de DEFESA: YURI PEDRO DOS SANTOS

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
STUDENT : YURI PEDRO DOS SANTOS
DATE: 19/10/2023
TIME: 14:00
LOCAL: Sala de video conferência do PoP-RN
TITLE:

Adaptive clustering of NOMA users in the power domain

KEY WORDS:

Non-orthogonal multiple access, User clustering, Evolutionary algorithms

PAGES: 91
BIG AREA: Engenharias
AREA: Engenharia Elétrica
SUMMARY:

The technique of Non-Orthogonal Multiple Access (NOMA, Non-Orthogonal Multiple Access) is intended to enable the transmission of two or more users sharing the same resources of time, frequency, and code, and thus significantly improve the spectral efficiency of wireless communication networks in future generations. Signal multiplexing can be achieved in the Power Domain NOMA (PD-NOMA), where superposed signals are transmitted with sufficiently different power levels. The efficiency of this method fundamentally depends on two previous processing steps: an adequate clustering of users (transmission candidates) with different channel gains and the choice of power levels that will be used to transmit each signal. The solutions presented in the literature to solve the user clustering problem do not consider the dynamics of the communication systems, that is, the temporal variation of the number of users and the channel conditions. To consider these dynamic characteristics when grouping users in NOMA systems, this work proposes a new clustering technique based on a modification of the evolutionary algorithm DenStream, chosen for its evolutionary capacity, robustness to noise, and online processing. Results show that the proposed clustering technique follows the system's dynamics, clustering all users and favoring the uniformity of the transmission rate between the clusters.

COMMITTEE MEMBERS:
Presidente - 1543191 - LUIZ FELIPE DE QUEIROZ SILVEIRA
Interno - 1412682 - VICENTE ANGELO DE SOUSA JUNIOR
Externo ao Programa - 3216921 - TIAGO TAVARES LEITE BARROS - UFRNExterno à Instituição - FABRÍCIO BRAGA SOARES DE CARVALHO - UFPB
Externo à Instituição - PEDRO THIAGO VALERIO DE SOUZA - UFERSA