Author:
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Rodríguez Fonollosa, Javier; Heikkilä, Markku; Kermoal, Jean Philippe; Mestre Pons, Francesc X.; Pagès Zamora, Alba Maria; Pollard, Adam; Schumacher, Laurent; Ylitalo, Juha; Gaspa Maynou, Roger
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Abstract:
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This article summarizes the main achievements
of the Multi-Element Transmit and
Receive Antennas (METRA) Project, an IST
research and technological development project carried out between January 2000 and June 2001 by Universitat Politècnica de Catalunya, the Center for Personkommunikation of Aalborg University, Nokia Networks, Nokia Mobile Phones, and Vodafone Group Research and Development.
The main objective of METRA was the performance
evaluation of multi-antenna terminals in
combination with adaptive antennas at the base
station in UMTS communication systems. 1 A
MIMO channel sounder was developed that provided
realistic multi-antenna channel measurements.
Using these measured data, stochastic
channel models were developed and properly validated.
These models were also evaluated in
order to estimate their corresponding channel
capacity. Different MIMO configurations and
processing schemes were developed for both the
FDD and TDD modes of UTRA, and their link
performance was assessed. Performance evaluation
was completed by system simulations that
illustrated the benefits of MIMO configurations
to the network operator. Implementation cost vs.
performance improvement was also covered by
the project, including the base station and terminal
manufacturer and network operator viewpoints.
Finally, significant standards contributions
were generated by the project and presented to the pertinent 3GPP working groups. |