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In this paper, we propose a robust watermarking method for 3-D triangle surface meshes. Most previous methods based on the wavelet analysis can process only semi-regular meshes. Our proposal can be applied to irregular as well as regular meshes by using recently introduced irregular wavelet analysis scheme. L2-Norm of the wavelet coefficients is modified in(More)
In this paper, we describe the mechanical design, system integration and dynamic walking of the humanoid, KHR-2 (KAIST Humanoid Robot–2). KHR-2 has 41 DOFs in total, that allows it to imitate various human-like motions. To control all joint axes effectively, the distributed control architecture is used, which reduces computation burden on the main(More)
In this paper, we propose a discrete wavelet transform (DWT) based watermarking method, which can be conveniently integrated in up-coming JPEG-2000 baseline. Conventional DWT based watermarking techniques insert a watermark into the coefficients after the transform completed, while the proposed method inserts a watermark into the coefficients obtained from(More)
—In this brief, we present a 60-W power amplifier that is linearized using an RF predistorter for multicarrier wideband code-division multiple-access (WCDMA) applications. The proposed RF predistorter is fully composed of RF or analog circuits, and it has a moderate memory effect compensation capability using a delayed third-order intermodulation (IM3)(More)
—This paper presents a new reconfigurable carrier leakage canceler for UHF RFID readers, using a directional coupler and an impedance tuning circuit to improve the sensitivity of the receiver. The impedance tuning circuit, which consists of electrically tunable passive components, can be adaptively tuned to have an optimum reflection coefficient for carrier(More)
—This paper presents a baseband noise reduction method in the receiver for UHF RFID readers. The signal captured from the transmitter after passing through the main delay components is fed as an LO signal into the down-converter in the receiver. At the down-converter, the LO signal and the leakage signal from the transmitter to the receiver are mixed with(More)