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Anomaly detection is to identify abnormal behaviors of a system. It plays an important role in Prognostics and System Health Management (PHM) which is applied to monitor spacecraft's performance, detect faults, identify the root cause of the fault, and predict the remaining useful life (RUL) in order to increase safety and reduce downtime of spacecraft in—orbit.
In recent years, distributed multiview video coding (DMVC) have been proposed for the low-complexity encoding and high-complexity decoding multiview applications. The performance of DMVC highly depends on the model of the correlation noise between original frame and side information. The parameters of correlation noise model (CNM) are argued to be estimated by temporal and view correlated frames,...
In this paper, we investigate the effects of channel estimation errors on the performance of turbo decoding over fully interleaved Rayleigh fading channels. It has been proven that the Max-Log-MAP decoder is independent of any channel parameter, no matter with perfect or imperfect channel estimates. Further, we propose a robust method for turbo decoding over Rayleigh fading channels by applying the...
In this paper, we propose a unified framework to examine the effect of SNR mismatch on the performance of turbo algorithms, such as turbo equalization and turbo decoding. The proposed framework is based on a general model for a biased estimate of the signal-to-noise ratio (SNR) of the channel. It is shown how the estimation model can unify previously SNR mismatch models, which become special cases...
In this paper, we investigate the signal-to-noise ratio (SNR) sensitivity of the Log-MAP turbo decoder over Rayleigh fading channels. It is shown that the use of the channel reliability factor proposed by Frenger is equivalent to an SNR underestimation when the channel estimate is not perfect. In addition, we propose s simplified method to compute the channel reliability factor, which leads to reduction...
This paper proposes two simplified methods for calculating the extrinsic information of turbo equalization using linear minimum mean squared error (MMSE) criterion. Under the assumption of linear correlation, the extrinsic information for each coded bit can be easily computed by using a simplified channel model. Simulation results show that proposed methods perform very closely to the conventional...
In this paper we propose a novel method that is motivated by distributed source coding to correct the errors of significant sections in 3D wavelet video streaming. Extra information is generated by Wyner-Ziv codec and is sent to the decoder. While errors occur, the relevant parts in the same frames from EZBC decoder are used as side information to decode the Wyner-Ziv bits to produce a refined replacement...
In this paper, we propose a new wavelet video coding based on MCTF-WZ through introducing Wyner-Ziv coding, which is a new coding structure. Low and high frequency frames in temporal domain are encoded through the distinct coding manner, where the former is encoded by the BISK algorithm after spatial analysis. But the latter is encoded by two distinct ways according to the correlation between the...
In this paper, we propose a low-power H.264/AVC baseline decoder. A systematic methodology for power reduction at all design levels for video decoding is proposed and applied. Power consumption is optimized at algorithm, architecture, circuit, and physical levels. The VLSI implementation results show that with UMC 180 nm technology, the proposed design is able to decode QCIF 30 fps at 1.5 MHz. It...
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