Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/5579
Title: Channel estimation schemes for OFDM relay-assisted systems
Author: Neves, Darlene
Ribeiro, Carlos
Silva, Adão
Gameiro, Atílio
Keywords: Cooperative systems
OFDM systems
Pilot-aided channel estimation
Relay based scenarios
Amplify-and-forward
Cooperative systems
Least Square
Minimum mean square errors
OFDM systems
Pilot-aided channel estimation
Relay based scenarios
Relay node
Single antenna
User terminals
Wireless communications
Estimation
Mobile telecommunication systems
Orthogonal frequency division multiplexing
Wireless networks
Wireless telecommunication systems
Channel estimation
Issue Date: 2009
Publisher: IEEE
Abstract: The aim of this paper is to adapt and evaluate the performance of two classical pilot-aided channel estimation schemes designed for OFDM systems: least square and minimum mean square error, in a relay-assisted scenario. We consider the Amplify-and-Forward, which is the simplest relay protocol for cooperative systems. Also, we consider the use of a single antenna at all the terminals: base station, user terminal and relay node. In our scenario, it is assumed that some of the user terminals deployed in a certain area could act as relaying-able terminals for the communications of other users. In this communication we show that the classical channel estimation techniques designed for conventional wireless communications can be extended for relay-assisted based systems under some modifications. © 2009 IEEE.
Peer review: yes
URI: http://hdl.handle.net/10773/5579
ISBN: 978-1-4244-2517-4
ISSN: 1550-2252
Appears in Collections:DETI - Comunicações

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