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báo cáo hóa học:" Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 719523 16 pages doi 10.1155 2010 719523 Research Article Design and Implementation of a Single-Frequency Mesh Network Using OpenAirInterface Florian Kaltenberger Rizwan Ghaffar Raymond Knopp Hicham Anouar and Christian Bonnet Eurecom 2229 Route des Cretes B.P. 193 06904 Sophia Antipolis France Correspondence should be addressed to Florian Kaltenberger florian.kaltenberger@eurecom.fr Received 1 June 2009 Revised 20 October 2009 Accepted 11 January 2010 Academic Editor Faouzi Bader Copyright 2010 Florian Kaltenberger et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. OpenAirInterface is an experimental open-source real-time hardware and software platform for experimentation in wireless communications and signal processing. With the help of OpenAirInterface researchers can demonstrate novel ideas quickly and verify them in a realistic environment. Its current implementation provides a full open-source software modem comprising physical and link layer functionalities for cellular and mesh network topologies. The physical PHY layer of the platform targets fourth generation wireless networks and thus uses orthogonal frequency division multiple access OFDMA together with multiple-input multiple-output MIMO techniques. The current hardware supports 5 MHz bandwidth and two transmit receive antennas. The media access MAC layer of the platform supports an abundant two-way signaling for enabling collaboration scheduling protocols as well as traffic and channel measurements. In this paper we focus on the mesh topology and show how to implement a single-frequency mesh network with OpenAirInterface. The key ingredients to enable such a network are a dualstream MIMO receiver structure and a distributed .