KEYWORDS: Backscatter, Design and modelling, Data transmission, Multiple input multiple output, Internet of things, Signal detection, Wireless communications, Antennas, Modulation, Simulations
Wireless backscatter is a novel passive communication technology, which enables battery-free devices to harvest energy from environmental RF signals and communicate with other devices via backscattering environmental signals. Wireless backscatter is ideal for the IoT. However, the existing wireless backscatter has several drawbacks, including a high bit error rate, expensive deployment costs, and high signal-noise ratio requirements. We proposed a distributed wireless backscatter system to address the aforementioned issues. Our design introduces multiple input multiple output (MIMO) system into wireless backscatter. With MIMO, backscatter communication can work at the same frequency as Wi-Fi. Moreover, the proposed distributed protocol increases the opportunity for backscatter. Extensive simulations show that our design significantly increases system throughput.
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