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| Content Provider | ACM Digital Library |
|---|---|
| Author | Zhang, Pengyu Ganesan, Deepak Hu, Pan |
| Abstract | Backscatter provides dual-benefits of energy harvesting and low-power communication, making it attractive to a broad class of wireless sensors. But the design of a protocol that enables extremely power-efficient radios for harvesting-based sensors as well as high-rate data transfer for data-rich sensors presents a conundrum. In this paper, we present a new {\em fully asymmetric} backscatter communication protocol where nodes blindly transmit data as and when they sense. This model enables fully flexible node designs, from extraordinarily power-efficient backscatter radios that consume barely a few micro-watts to high-throughput radios that can stream at hundreds of Kbps while consuming a paltry tens of micro-watts. The challenge, however, lies in decoding concurrent streams at the reader, which we achieve using a novel combination of time-domain separation of interleaved signal edges, and phase-domain separation of colliding transmissions. We provide an implementation of our protocol, LF-Backscatter, and show that it can achieve an order of magnitude or more improvement in throughput, latency and power over state-of-art alternatives. |
| Ending Page | 267 |
| Page Count | 13 |
| Starting Page | 255 |
| File Format | WebM PDF WAV |
| ISBN | 9781450335423 |
| DOI | 10.1145/2785956.2787477 |
| Language | English |
| Publisher | Association for Computing Machinery (ACM) |
| Publisher Date | 2015-08-17 |
| Publisher Place | New York |
| Access Restriction | Subscribed |
| Subject Keyword | Wireless Architecture Backscatter |
| Content Type | Audio Text |
| Resource Type | Article |
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