Overspread Digital Transmission Over Wireless Linear Time-Varying MIMO Systems

• Tipo: Artigo em Revista Científica Internacional
• Data: 2010

Autores

marques, pm (Autor) Outra; abrantes, sa (Autor) Outra

Revista

Título: IEEE Transactions on Vehicular Technology

Vol. 59 Nº 3

Páginas: 1269-1281

ISSN: 0018-9545

Editora: IEEE

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Outras Informações

ID Authenticus: P-003-8P2

DOI: 10.1109/TVT.2009.2037640

Abstract (EN): Accompanying the journey for higher spectral efficiency in mobile wireless communications, this paper studies multiple-input-multiple-output (MIMO) transmission in a unified framework that consolidates the phenomena responsible for frequency selectivity and time selectivity, i.e., delay overspreading and Doppler overspreading, respectively. Starting with a baseband description of the linear time-varying MIMO system, a novel approach using continuous, discrete, and hybrid linear operators leverages the process of channel orthonormalization and model discretization. Notably, this process leads to an optimal time-varying semiorthonormal matrix matched filter (the ORTHO-TS-MMF). Monte Carlo simulations test the error performance for typical wireless MIMO realizations. In particular, they unveil that combining the ORTHO-TS-MMF with optimal linear detection takes advantage of both delay and Doppler diversities, significantly reducing the symbol error probability.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 13