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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Xing Xu Ji Luo Qian Zhang |
| Copyright Year | 2010 |
| Abstract | A critical issue in wireless sensor networks (WSNs) is represented by the network throughput. To meet the throughput requirement, researchers propose multi-channel design in 802.15.4 networks to better utilize the wireless medium and avoid the co-channel interference. However, traditional orthogonal channel design restricts the number of channels and limits the throughput performance. We argue that the orthogonality is not necessary for multi-channel design in WSNs. In this paper, we investigate the feasibility of non-orthogonal channel design. In our experiment, we observe that with nonorthogonal transmission, the effect of interference comes from co-channel and inter-channel is different. More specifically, the inter-channel interference is tolerable with certain channel center frequency distance (CFD). According to that, we propose a novel scheme DCN (Dynamic CCA-threshold for Non-orthogonal transmission) which adjusts the CCA-threshold to enable the concurrent transmissions on adjacent non-orthogonal channels and thus improve the overall network throughput performance. Through comprehensive experiments on our testbed, we verify that our DCN achieves about 38.4% ∼ 55.7% throughput improvement in general network configurations comparing to the default ZigBee design. |
| Starting Page | 358 |
| Ending Page | 367 |
| File Size | 746229 |
| Page Count | 10 |
| File Format | |
| ISBN | 9781424472611 |
| ISSN | 10636927 |
| e-ISBN | 9781424472628 |
| DOI | 10.1109/ICDCS.2010.37 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2010-06-21 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Wireless sensor networks Throughput Computational fluid dynamics Interchannel interference Frequency ZigBee Bandwidth Decoding Protocols Distributed computing wireless sensor networks Multi-channel orthogonal channel interference CCA-threshold |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Networks and Communications Hardware and Architecture Software |
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