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 Performance assessment of single and multiple antenna relays for the uplink OFDM systems
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5374

title: Performance assessment of single and multiple antenna relays for the uplink OFDM systems
authors: Lima, H.
Moço, A.
Silva, A.
Gameiro, A.
keywords: Cooperative schemes and uplink
Multiple antennas
OFDM
Relay
Cooperative schemes
Cooperative systems
Decode-and-forward
Mobile relays
Multiple antennas
Multiple-antenna relay
Non-cooperative
Numerical results
OFDM based system
OFDM systems
Performance assessment
Realistic scenario
Single antenna
User terminals
Antenna arrays
Local area networks
Mobile telecommunication systems
Orthogonal frequency division multiplexing
Wimax
Wireless networks
Mobile antennas
issue date: 2009
publisher: IEEE
abstract: The aim of this paper is to propose and assess the performance of cooperative schemes designed for the uplink OFDM based systems with mobile relays with an antenna array. We consider the use of an antenna array at the base station and a single antenna at the user terminal. We compare the situations at which the relay is equipped with one or two antennas. We assume that some of the user terminals deployed in a certain area could act as relaying-able terminals for the communication of other users. Two types of relay assisted protocols are considered: equalize-and-forward and decode-and-forward. The performance of the proposed relay-assisted schemes is evaluated under realistic scenarios, considering typical pedestrian scenarios based on WiMAX specifications. The proposed schemes are also compared against the OFDM based non-cooperative systems. Numerical results show that the availability of antenna arrays at the relays significantly improves the cooperative systems performance, which outperform the non-cooperative ones in all studied scenarios
URI: http://hdl.handle.net/10773/5374
ISBN: 978-0-7695-3775-7
source: ICSNC 09: 4th International Conference on Systems and Networks Communications
appears in collectionsDETI - Comunicações

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