Loch, Adrian ; Hollick, Matthias ; Kühne, Alexander ; Klein, Anja (2015)
OFDMA for Wireless Multihop Networks: From Theory to Practice.
In: Pervasive and Mobile Computing, 23
doi: 10.1016/j.pmcj.2015.07.003
Article, Bibliographie
Abstract
Orthogonal Frequency-Division Multiple Access (OFDMA) enables nodes to exploit spatial diversity in Wireless Mesh Networks (WMNs). As a result, throughput improves significantly. While existing work often considers the physical layer only, using OFDMA in a WMN also affects the link and network layers. In particular, multi-hop forwarding may result in severe bottlenecks since OFDMA resource allocations are typically based on local information only. In this paper, we design a practical system that mitigates such bottlenecks. To this end, we allow for resource allocation based on channel and traffic conditions at the physical layer, per-subcarrier coding at the link layer, and per-subcarrier packet segmentation at the network layer. We implement our approach on software-defined radios and show that it provides significant throughput gains compared to traditional schemes.
| Item Type: | Article |
|---|---|
| Erschienen: | 2015 |
| Creators: | Loch, Adrian ; Hollick, Matthias ; Kühne, Alexander ; Klein, Anja |
| Type of entry: | Bibliographie |
| Title: | OFDMA for Wireless Multihop Networks: From Theory to Practice |
| Language: | English |
| Date: | October 2015 |
| Publisher: | Elsevier |
| Journal or Publication Title: | Pervasive and Mobile Computing |
| Volume of the journal: | 23 |
| DOI: | 10.1016/j.pmcj.2015.07.003 |
| Abstract: | Orthogonal Frequency-Division Multiple Access (OFDMA) enables nodes to exploit spatial diversity in Wireless Mesh Networks (WMNs). As a result, throughput improves significantly. While existing work often considers the physical layer only, using OFDMA in a WMN also affects the link and network layers. In particular, multi-hop forwarding may result in severe bottlenecks since OFDMA resource allocations are typically based on local information only. In this paper, we design a practical system that mitigates such bottlenecks. To this end, we allow for resource allocation based on channel and traffic conditions at the physical layer, per-subcarrier coding at the link layer, and per-subcarrier packet segmentation at the network layer. We implement our approach on software-defined radios and show that it provides significant throughput gains compared to traditional schemes. |
| Uncontrolled Keywords: | C1E |
| Identification Number: | TUD-CS-2015-12055 |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications 18 Department of Electrical Engineering and Information Technology > Institute for Telecommunications > Communications Engineering 20 Department of Computer Science 20 Department of Computer Science > Sichere Mobile Netze DFG-Collaborative Research Centres (incl. Transregio) DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres LOEWE LOEWE > LOEWE-Schwerpunkte LOEWE > LOEWE-Schwerpunkte > NiCER – Networked infrastructureless Cooperation for Emergency Response DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1053: MAKI – Multi-Mechanisms Adaptation for the Future Internet DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1053: MAKI – Multi-Mechanisms Adaptation for the Future Internet > C: Communication Mechanisms DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 1053: MAKI – Multi-Mechanisms Adaptation for the Future Internet > C: Communication Mechanisms > Subproject C1: Network-centred perspective |
| Date Deposited: | 05 Apr 2016 11:09 |
| Last Modified: | 16 Aug 2021 11:30 |
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