Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/5400
Title: Performance evaluation of virtual MIMO schemes for the UL OFDMA based systems
Author: Moço, Andreia
Teodoro, Sara
Silva, Adão
Gameiro, Atílio
Keywords: Cooperative schemes
OFDMA
Relay
Uplink
Virtual MIMO
Antenna accessories
Antenna arrays
Antennas
Bit error rate
Error analysis
Frequency division multiple access
MIM devices
Mobile telecommunication systems
Multiplexing
Photoelectric relays
Receiving antennas
Amplify-and-forward
Base stations
Broad band wireless systems
Cooperative schemes
Decode-and-Forward
International conferences
MIMO channels
MIMO schemes
Mobile communications
Mobile terminal
OFDMA
Performance evaluation
Receive antennas
Relay
SIMO systems
Single antenna
System-capacity
Two types
Uplink
Virtual MIMO
Mobile antennas
Issue Date: 2008
Publisher: IEEE
Abstract: In this paper we propose and assess the performance of virtual MIMO or relay-assisted cooperative schemes designed for the UL OFDMA based systems. We consider the use of an antenna array at the base station and a single antenna at both the mobile terminal and relay. The proposed cooperative schemes emulate a MIMO channel with 2 transmit and M receive antennas. Two types of relays are considered: amplify-and-forward and selective decode-and-forward. We derive the instantaneous normalized capacities and both the outage capacities and bit error rate are compared against the noncooperative SISO and SIMO systems, considering different scenarios. The proposed relay-assisted schemes are suited for existing and for the future broadband wireless systems to increase the system capacity and coverage. © 2008 IEEE.
Peer review: yes
URI: http://hdl.handle.net/10773/5400
DOI: 10.1109/ICWMC.2008.61
ISBN: 978-0-7695-3274-5
Appears in Collections:DETI - Comunicações

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