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In RFID systems, the privacy problem has attracted increasing attention as the tags have extremely limited on-chip resources and may blindly respond to unauthorized readers. To protect the privacy, one widely used solution is to deploy one or more blocker tags to collide the RF signal sent from protected tags all the time. In this paper, we investigate the problem of tag identification in privacy-sensitive...
Radio Frequency Identification (RFID) technology has been widely used in missing tag identification to reduce the economic loss caused by theft. Although many advanced works have been proposed, they cannot work properly in an open RFID system with unexpected tags. To solve the problem, this paper proposes an order-based missing tag identification protocol (OMTI) that efficiently identifies all missing...
H.264/AVC is the latest video coding standard from ITU-T and ISO/IEC. Not only the compression performance is enhanced but also the robustness of video bit streams to errors is better. FMO (Flexible Macro-block Ordering) is a new error resilient tool adopted by H.264/AVC and it has a good performance of error resilience. In this paper, a novel FMO algorithm is proposed, and an adaptive coding scheme...
Compressed video streams are sensitive to errors and losses when transmitted over wireless error-prone channels. In this paper, we propose an Error Resilient (ER) scheme based on Reversible Data Hiding (RDH) and Redundant Slice (RDH-RS). Reversible data hiding is quite effective in unequal protection and can provide satisfactory protection to vital information, while redundant slice works well in...
Dual-band and tri-band SIR bandpass filters with compact coupling and sizes reduction are proposed, and two paths coupling is introduced. In the new design, split ring SIR and DGS techniques are applied to not only reduce the size but also improve the filter frequency responses. The presented filters have advantages of compact and novel structures, smaller sizes compared to the traditional SIR bandpass...
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