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the DFH (Differential Frequency Hopping) technology brings high performances for HF (Frequency Hopping) communication systems. Symbol-by-symbol detection has been widely used in DFH systems, but the anti-jamming (AJ) performance is poor. In order to achieve better AJ performance, a novel anti-jamming technique based on Correlation Pre-Windowing Filter (CPWF) on frequency domain is proposed in this...
Through theoretical analysis and numerical simulation, this paper proves that the classical bistable system is existence of output saturation. When the system output reaches saturation, the output signal to noise ratio (SNR) will drop rapidly, and it's poor to extract a useful signal from the strong background noise. Therefore, we put forward a new piecewise hybrid system, and prove that there is...
This paper proposes a modified Gaussian Mixed Model (GMM) with an embedded Time Delay Neural Network (TDNN). It integrates the merits of GMM which is a generative model and TDNN which is a discriminative model. TDNN digests the timing information of the feature sequences, and through the transformation of the feature vectors it makes the hypothesis of variable independence that maximum likelihood...
A novel intermediate view synthesis method based on disparity estimation is presented in this paper. Color distance is adopted to set truncation value adaptively when Belief Propagation (BP) algorithm is used in disparity estimation. In view interpolation, the left and right part of the image are divided into three kinds using strong and weak consistency constraints separately. Then different strategy...
In this paper, we introduce an orthogonalization aided distributed scheduling algorithm for multiuser MIMO broadcast channels (MU-MIMO BC). In this algorithm each mobile station (MS) selects transmission scheme, including beamforming (BF) and spatial multiplexing (SM) according to its channel state and feeds back channel state information (CSI) adaptively. On receiving CSI from each MS, the base station...
This paper proposes a modified gaussian mixed model (GMM) with an embedded auto-associate neural network (AANN). It integrates the merits of GMM and AANN. GMM and AANN are trained as a whole by means of maximum likelihood. In the process of training, the parameter of GMM and AANN are updated alternately. AANN reshapes the distribution of the data and improves the similarity of the data in one class...
In this paper we introduced a multi-level threshold opportunistic transmission scheme in multiuser MIMO (MU-MIMO) downlink with reduced feedback. In the strategy two thresholds are employed. The tight one is used for feedback load reduction, and the loose one is to guarantee low outage probability. Mobile station (MS) whose channel gain exceeds one of the thresholds is eligible for feeding back information...
In this paper we introduced an opportunistic transmission scheme in MU-MIMO downlink with reduced feedback and mode adaptation. In this strategy both base station (BS) and mobile station (MS) are equipped with multiple antennas. Threshold scheme is employed. Only eligible MS whose channel quality exceeds a preset threshold would select transmission mode, including beamforming (BF) and spatial multiplexing...
We introduce an independent component analysis (ICA) based multiuser MIMO (MU-MIMO) downlink transmission scheme to solve the transmission problem for MIMO broadcast channels when channel state information (CSI) is not available. With the scheme, base station (BS) selects and transmits to a set of mobile stations (MS) simultaneously. Each BSpsilas transmit antenna corresponds to an MS belonging to...
AVS-M is part seven of AVS standard, which is the second generation source coding standard of China. Because the system resource is limited in mobile platform compared with AVS P2, AVS-M has lower complexity, and is suitable for mobile-multimedia applications. The performance of AVS-M is close to H.264/AVC in the case of low rate bitstream. It is very important to increase the real-time encoding and...
The maximum amplitude of matching Fourier transform (MFT) spectrum based on re-sampling of sine (single pulse, SP) signal reflected the frequency of the signal. The analysis of the MFT spectrum of SP signal reflected the MFT theories, from which a method to estimate the frequency of SP signal was proposed; The similarity of the MFT spectrum of the SP and linear FM (LFM) signal was analyzed, then the...
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