Abstract
For traditional mobile device selection, the source device needs to know the device ID of the target device in advance for interaction, which is not friendly for users. In this paper, a device selection scheme based on Doppler shift with high resolution is proposed. User who holds the source device makes a pointing action towards the target device, while the source device emits ultrasonic wave. According to Doppler Effect, the neighboring devices of the source device will return the device ID and Doppler frequency shifts, and the source device selects the device with the maximum frequency shift as the target device. When there are 2 or more devices with the same frequency shift, more accurate frequency differences between these devices are calculated by cross ambiguity function, in order to decide the target device with unique maximum Doppler frequency shift. Simulation results show that CAF-DS achieves higher device selection accuracy than Spartacus.
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