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Cooperative spectrum sensing is regarded as an efficient way to detect the spare spectrum in cognitive radio networks (CRNs), where malicious secondary users (SUs) can launch the spectrum sensing data falsification (SSDF) attack to interfere with the detection and threat the CRN. In order to defend against the SSDF attack, it is necessary for the fusion center to distinguish the trustworthiness of...
In this paper, we propose a cross-layer model to provide reliable video stream transmission in the mobile environment. In the proposed model, the application-layer forward error correction (A-FEC) parameters at the application layer, the ARQ parameters at the data link layer and the adaptive modulation and coding parameters at the physical layer are jointly designed. By maximizing the number of correctly...
Baseband adaptive nonlinear predistorters are the most effective schemes in compensating the nonlinear effects of high power amplifiers in communication systems. The existing predistorters generally realized by the look-up table and polynomial methods. Although many well-considered algorithms based on the two methods have been proposed and implemented, their performances are restricted by either the...
Bit-interleaved coded modulation (BICM), which has been proven to be powerful when applied in low-density parity-check (LDPC) sum-product algorithm (SPA) decoder, is a bandwidth efficient coding scheme. However, the BICM-SPA decoder does not take the statistical dependencies between bits from the same L-ary modulated symbol into account so that it cannot converge to the maximum a-posteriori (MAP)...
In network intrusion detection systems, feature extraction plays an important role in a sense of improving classification performance and reducing the computational complexity. Principle Component Analysis and Independent Component Analysis are both common feature extraction methods currently. This paper proposed a novel feature extraction method for network intrusion detection and the core of this...
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