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This work uses continuous-tome (CT) structure to make the sigma-delta modulator faster and consuming less power. A third-order 3-bit CT-IDC with OSR=64 fabricated in TSMC T18 1P6M technology is proposed in the paper. The modulator is operated at 100MHz sampling clock. It achieves dynamic range of 84.7 dB, peak SNDR of 73.82 dB within the 737-kHz bandwidth. This chip dissipates 6.6mA from a 3.3V supply...
This paper introduces a scheme of client device identification by clock skew in cloud environments. Clock skew of a remote device is considered an effective physical characteristic and is suitable for device identification purposes. As the temperature is always steady inside data center, we utilize this advantage to verify that two arithmetic relations hold with negligible measurement error between...
Along with the growth of cloud computing and mobile devices, the importance of client device identity concern over cloud environment is emerging. To provide a lightweight yet reliable method for device identification, an application layer approach based on clock skew fingerprint is proposed. The developed experimental platform adapts AJAX technology to collect the timestamps of client devices in the...
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