Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/5383
Title: | Virtual MIMO schemes for downlink space-frequency coding OFDM systems |
Author: | Teodoro, S. Silva, A. Gil, J.M. Gameiro, A. |
Keywords: | Cooperative diversity OFDM Relaying protocols Space-frequency coding Virtual MIMO Amplify-and-forward Channel model Co-located Co-operative diversity Cooperative schemes Correlated antennas Decode-and-forward Decode-and-forward relaying Non-cooperative OFDM based system OFDM systems Power constraints Realistic scenario Single antenna Space-frequency block coding Space-frequency coding Turbo coding Virtual MIMO Antenna arrays Doppler effect Frequency modulation Orthogonal frequency division multiplexing Orthogonal functions Radio communication Telecommunication systems Ad hoc networks |
Issue Date: | 2009 |
Publisher: | IEEE |
Abstract: | In this paper we investigate the performance of single-relay cooperative scheme, where the source is equipped with a 2-antenna array and both the relay and destination with a single antenna. We consider Amplify-and-Forward, Decode-and-Forward and Selective Decode-and-Forward relaying protocols and a space-frequency block coding designed for DL OFDM based systems is employed. Signals expressions are derived for each relay protocol under various scenarios, considering power constraint imposed on cooperating nodes. The aim of this work is to evaluate this Virtual MIMO scheme in realistic scenarios (e.g. correlated antennas, precise channel models, Doppler effects) for implementation purposes in a system with LTE based parameters and considering channel turbo coding. The coded performance of the proposed Virtual MIMO scheme is evaluated, and compared against non-cooperative OFDM based systems, for typical pedestrian scenarios based on LTE specifications. The proposed cooperative scheme outperforms the co-located MISO and MIMO for some scenarios. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/5383 |
ISBN: | 978-1-4244-5123-4 |
Appears in Collections: | DETI - Comunicações |
Files in This Item:
File | Description | Size | Format | |
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Sara_PIMRC_2009.pdf | 412.14 kB | Adobe PDF |
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