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Cluster on Adaptive Antennas
Context
The adaptive antenna concept has now long been proved to bring a capacity increase of cellular networks. This was the goal of the TSUNAMI project (RACE), the TSUNAMI II project and to a lesser extent the SUNBEAM project, in ACTS. Adaptive antennas were considered as a means to steer a beam towards the user, increasing the capacity by decreasing the interference level at the network level. The underlying property that was used is the CORRELATION between the various sensors of the array.
A much older concept is that of diversity : two sensors receiving DECORRELATED signals. Space and/or polarization diversity at the base station RECEIVER is widely deployed in present cellular networks, as a means to balance the link budget between a low power terminal, and a strong power base station.
However, the concept of diversity has recently received renewed attention in two ways:
- TRANSMIT diversity at the base station has been standardized as an option for UMTS
- Bell Laboratories have promoted a new concept coined BLAST (Bell Laboratories Spatio-Temporal Layered Structure), which increases the capacity of a link by using multiple sensors both on the transmit and receive side, provided these sensors are DECORRELATED.
Objectives
A forum to consolidate the results of projects dealing with
- Adaptive antennas at the base station
- Beamsteering (with or without interference rejection)
- Space/Polarization Diversity (Transmit/Receive)
- MIMO (Multiple Inputs Multiple Outputs) techniques :Diversity both at transmitter and receiver side, with possibly more than 2 sensors in the following fields,
- Propagation: Methodology of measurements for MIMO, Modelling approaches
- Algorithms
- Tests scenarios
- Performance results
- Cost/benefit analysis
- Inputs to standards
List of projects
| OBANET | SATURN | ASILUM | FITNESS | ESCORT | I-METRA |
- Contact person of the cluster
- sylvie.mayrargue@rd.francetelecom.fr
- Contact person in the European Commission
- fabrizio.sestini@ec.europa.eu
- Start date
- March 2000
Cluster presentations
- Year 2000 presentation. (Zipped pps, 126 KB.)
Cluster Report
- Year 2000 report (pdf 511 KB)
Cluster meetings
Agenda and presentations during the 8th Concertation meeting of 11 septembre 2002 - Minutes of the Adaptative Antennas cluster meeting and presentations (Romantik, Antium) held during the IST Summit in Thessaloniki, Greece, 16-19/06/02
- 4th cluster meeting agenda and presentations during the 7th Concertation meeting of 9-10 April 2002
- Minutes of 4th cluster meeting (Brussels, April 10, 2002)
- Meeting agenda and presentations during the 6th Concertation meeting of 11-12 December 2001
- 2nd cluster meeting Brussels, June 20th 2001 Minutes