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| Content Provider | ACM Digital Library |
|---|---|
| Author | Bahl, Paramvir Chandra, Ranveer Murty, Rohan Welsh, Matt Moscibroda, Thomas |
| Abstract | Networking over UHF white spaces is fundamentally different from conventional Wi-Fi along three axes: spatial variation, temporal variation, and fragmentation of the UHF spectrum. Each of these differences gives rise to new challenges for implementing a wireless network in this band. We present the design and implementation of Net7, the first Wi-Fi like system constructed on top of UHF white spaces. Net7 incorporates a new adaptive spectrum assignment algorithm to handle spectrum variation and fragmentation, and proposes a low overhead protocol to handle temporal variation. builds on a simple technique, called SIFT, that reduces the time to detect transmissions in variable channel width systems by analyzing raw signals in the time domain. We provide an extensive evaluation of the system in terms of a prototype implementation and detailed experimental and simulation results. |
| Starting Page | 27 |
| Ending Page | 38 |
| Page Count | 12 |
| File Format | |
| ISBN | 9781605585949 |
| DOI | 10.1145/1592568.1592573 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2009-08-16 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Cognitive radios Wi-fi Dynamic spectrum access White spaces Channel width |
| Content Type | Text |
| Resource Type | Article |
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