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Layered-Division-Multiplexing (LDM) technology has been shown to provide significant performance improvent for digital TV (DTV) broadcasting systems to simultaneously deliver a robust mobile TV service and one or more high-throughput fixed services in the same 6 MHz TV channel. So far, the focus of LDM for future DTV systems has been put on delivering mixed mobile and fixed services since this is...
One of the top-priority requirements for the next generation digital TV (NG-DTV) system is the capability to deliver robust services to both mobile and fixed receivers under challenging propagation conditions. One typical challenging scenario is indoor reception, where the penetration loss could be as high as 20 dB. Other challenging scenarios include outdoor mobile reception at various receiver speeds,...
Cloud transmission (Cloud Txn) is a flexible multilayer system that uses spectrum overlay technology to simultaneously deliver multiple program streams with different characteristics and robustness for different services (mobile TV, HDTV, and UHDTV) in one radio frequency channel. Cloud Txn is a multilayer transmission system like layered-division multiplexing. The transmitted signal is formed by...
In this paper, robust design method is introduced to control RV reducer's transmission error. Main factors that influencing the transmission error are analyzed, and divided controllable factors and uncontrollable factors (noise factors) in order to meet the requirements of the test factors in robust design. By means of orthogonal experiment and G. Taguchi robust design, considering as noise factors,...
This paper proposed a novel robust oblivious watermarking scheme in the spatial domain suitable for 3-D mesh object, which combines the principal component analysis (PCA) method with the construction of cone bins. Firstly, PCA is used to calculate the eigenvectors of covariance matrix of vertex coordinates. Then the object is rotated and translated so that its center of mass and the three eigenvectors...
In this paper, a novel robust adaptive beamformer based on principal component regression (PCR) is derived. Unlike many existing methods, the proposed method is completely automatic (or so-called parameter-free), which means, it do not need the choice of user parameters. The performance of our approach is illustrated by numerical simulations and compared to other robust adaptive beamformers. The simulation...
The goal of this paper is to present an iterative robust adaptive beamformer using partial least squares (PLS) based on the generalized sidelobe canceller (GSC) parameterization of the minimum variance (MV) beamformer. The proposed method can be implemented simply as an iterative process and does not require the choice of a user parameter. The shrinkage properties and the relations among ridge regression...
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