Name
Abstract | ||
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We specify and evaluate a new software-defined clock network architecture, Stitch. We use Stitch to derive all subsystem clocks from a single local oscillator (LO) on an embedded platform, and enable efficient radio frequency synchronization (RFS) between two nodes' LOs. RFS uses the complex baseband samples from a low-power low-cost narrowband transceiver to drive the frequency difference between the two devices to less than 3 parts per billion (ppb). Recognizing that the use of a wideband channel to measure clock frequency offset for synchronization purposes is inefficient, we propose to use a separate narrowband radio to provide these measurements. However, existing platforms do not provide the ability to unify the local oscillator across multiple subsystems. We demonstrate Stitch with a reference hardware implementation on a research platform. We show that, with Stitch and RFS, we are able to achieve dramatic efficiency gains in ultra-wideband (UWB) time synchronization and ranging. We demonstrate the same UWB ranging accuracy in state-of-the-art systems but with 59% less utilization of the UWB channel.
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Year | DOI | Venue |
|---|---|---|
2018 | 10.1109/IPSN.2018.00016 | IPSN |
Keywords | Field | DocType |
syntonization, ultra-wideband, software-defined platform, sensor networks | Clock network,Synchronization,Baseband,Narrowband,Computer science,Real-time computing,Ultra-wideband,Bandwidth (signal processing),Computer hardware,Local oscillator,Clock rate | Conference |
ISBN | Citations | PageRank |
978-1-5386-5298-5 | 2 | 0.51 |
References | Authors | |
17 | 7 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Anh Luong | 1 | 24 | 6.05 |
| Peter Hillyard | 2 | 8 | 4.01 |
| Alemayehu Solomon Abrar | 3 | 11 | 3.02 |
| Charissa Che | 4 | 2 | 0.51 |
| Anthony Rowe | 5 | 878 | 77.76 |
| Thomas Schmid | 6 | 32 | 4.62 |
| Neal Patwari | 7 | 3805 | 241.58 |