Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications
To utilize the benefits of cellular systems, wireless machine-to-machine (M2M) communications over cellular systems are being widely considered. In order to support efficient spectrum sharing between M2M devices and normal mobile users, in the paper, we propose a multilayer orthogonal beamforming (M...
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| Format: | Article |
| Language: | English |
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Wiley
2012-08-01
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| Series: | International Journal of Distributed Sensor Networks |
| Online Access: | https://doi.org/10.1155/2012/307467 |
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| _version_ | 1832559176853749760 |
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| author | Jindong Xie Jun Zhang Lin Bai |
| author_facet | Jindong Xie Jun Zhang Lin Bai |
| author_sort | Jindong Xie |
| collection | DOAJ |
| description | To utilize the benefits of cellular systems, wireless machine-to-machine (M2M) communications over cellular systems are being widely considered. In order to support efficient spectrum sharing between M2M devices and normal mobile users, in the paper, we propose a multilayer orthogonal beamforming (MOBF) scheme for M2M communications over orthogonal frequency division multiple access (OFDMA-) based cellular systems. Using MOBF, each subcarrier in OFDMA systems could be efficiently reused by both normal mobile users and machine-type devices which are organized into multiple virtual layers. The users located in higher layers (e.g., mobile users) are not to be interfered by those in lower layers (e.g., machine devices). To improve the performance, the orthogonal deficiency (OD-) based user selection is carried out, where the intralayer fairness and quasimaximal performance can be guaranteed, simultaneously. Moreover, the signal-to-interference plus noise ratio (SINR) is investigated to measure the performance lower bound of different layers. It is demonstrated by both theoretical and numerical results that the proposed approach provides a stable SINR performance for each layer, that is, the interference free ability from lower level layers. |
| format | Article |
| id | doaj-art-e496ac8c18c24d0fb3e984e0579c3ec4 |
| institution | Kabale University |
| issn | 1550-1477 |
| language | English |
| publishDate | 2012-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Distributed Sensor Networks |
| spelling | doaj-art-e496ac8c18c24d0fb3e984e0579c3ec42025-02-03T01:30:42ZengWileyInternational Journal of Distributed Sensor Networks1550-14772012-08-01810.1155/2012/307467Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless CommunicationsJindong XieJun ZhangLin BaiTo utilize the benefits of cellular systems, wireless machine-to-machine (M2M) communications over cellular systems are being widely considered. In order to support efficient spectrum sharing between M2M devices and normal mobile users, in the paper, we propose a multilayer orthogonal beamforming (MOBF) scheme for M2M communications over orthogonal frequency division multiple access (OFDMA-) based cellular systems. Using MOBF, each subcarrier in OFDMA systems could be efficiently reused by both normal mobile users and machine-type devices which are organized into multiple virtual layers. The users located in higher layers (e.g., mobile users) are not to be interfered by those in lower layers (e.g., machine devices). To improve the performance, the orthogonal deficiency (OD-) based user selection is carried out, where the intralayer fairness and quasimaximal performance can be guaranteed, simultaneously. Moreover, the signal-to-interference plus noise ratio (SINR) is investigated to measure the performance lower bound of different layers. It is demonstrated by both theoretical and numerical results that the proposed approach provides a stable SINR performance for each layer, that is, the interference free ability from lower level layers.https://doi.org/10.1155/2012/307467 |
| spellingShingle | Jindong Xie Jun Zhang Lin Bai Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications International Journal of Distributed Sensor Networks |
| title | Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications |
| title_full | Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications |
| title_fullStr | Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications |
| title_full_unstemmed | Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications |
| title_short | Multilayer Orthogonal Beamforming for Priority-Guaranteed Wireless Communications |
| title_sort | multilayer orthogonal beamforming for priority guaranteed wireless communications |
| url | https://doi.org/10.1155/2012/307467 |
| work_keys_str_mv | AT jindongxie multilayerorthogonalbeamformingforpriorityguaranteedwirelesscommunications AT junzhang multilayerorthogonalbeamformingforpriorityguaranteedwirelesscommunications AT linbai multilayerorthogonalbeamformingforpriorityguaranteedwirelesscommunications |