Overspread Digital Transmission Over Wireless Linear Time-Varying MIMO Systems

• Type: Article in International Scientific Journal
• Date: 2010

Authors

marques, pm (Author) Other; abrantes, sa (Author) Other

Journal

Title: IEEE Transactions on Vehicular Technology

Vol. 59 No. 3

Pages: 1269-1281

ISSN: 0018-9545

Publisher: IEEE

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: 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.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13