Detector Multiusuário Híbrido Baseado na Expansão Polinomial Seguida de Algoritmo de Busca Local (Hybrid 1-opt Local Search Polynomial-Expanded Linear Multiuser Detectors)

Reinaldo Gotz (reinaldogotz@hotmail.com), Taufik Abrão (taufik@uel.br)


University of Londrina
This paper appears in: Revista IEEE América Latina

Publication Date: Sept. 2013
Volume: 11,   Issue: 5 
ISSN: 1548-0992


Abstract:
This work proposes hybrid multiuser detector based on poly- nomial expansion (PE-MuD) as a way to reduce computational complexity inherent to correlation matrix inversion, followed by the low complexity local search procedure, aiming to obtain a near-optimum multiuser performance, however with redu- ced computational complexity. The proposed hybrid PE-MuD receiver topology which incorporate local search procedure, is analyzed under realistic wireless mobile channels, as well as useful system operation scenarios. Simulation results indicate a suitable improvement in the performance-complexity trade-off regarding the classical linear multiuser detectors, particularly the Decorrelator.

Index Terms:
Suboptimum search algorithms, polynomial expanded multiuser detection, Gershgorin cycles, DS-CDMA.   


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