Yanming Xue

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In order to improve the accuracy and speed of channel estimation in OFDM system, an improved Compressive Sampling Matching Pursuit (CoSaMP) algorithm was proposed. The new algorithm which improves the estimation accuracy and the estimation speed, added a least square estimation process to the estimation results. Moreover it optimized the number of atoms in(More)
In order to improve the noise immunity performance of blind watermark algorithm of dual-tree complex wavelet transform (DT - CWT), an improved measure is proposed and is applied to the art of video, learning from complete complementary codes used in spread spectrum communication. The algorithm utilizes Hadamard matrix to create the complete complementary(More)
This paper proposes a new blind channel estimation method for orthogonal frequency division multiplexing (OFDM) systems. The algorithm makes use of the redundancy introduced by the cyclic prefix to identify the channel based on a subspace approach. In order to improve its performance, the algorithm uses the method of interception and smoothness of signal(More)
compared with some common text file compression algorithms in the factors of compress ratio, rate and data coherence, and research on the data type of the RFID tags, we can find LZSS is the appropriate compression algorithm used in the RFID tag’s data storage. LZSS is a lossless compression algorithm, it has a high compress ratio and quick compress rate, so(More)
In order to improve the accuracy of channel estimation in OFDM system, an improved algorithm Regularized Orthogonal Matching Pursuit (ROMP) Algorithm is proposed. The algorithm avoids choosing the wrong group and makes the group of atoms' energy more concentrated which is selected by modified regularized principle, then adds the secondary screening of(More)
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