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This paper focuses on the resource scheduling of LTEAdvanced system with carrier aggregation. With different fading characters, the aggregated carriers have different coverage between each other. Consequently, the carrier aggregation causes that the number of carriers which users can be scheduled on is various. The allocation fairness can not be achieved(More)
Distinction of the type of modulated signals is very important in cognitive radio system. In this paper, a novel approach to signal classification is proposed for cognitive radio. Combining the spectral cyclostationary features, embed SVM into the framework of HMM to construct a hybrid HMM/SVM classifier for signal recognition. The simulation results show(More)
In cognitive radios, the first and crucial task is to detect the spectrum holes or the presence of primary user by employing spectrum sensing. However, there exist two kinds of detection errors (i.e., miss-detection error and false-alarm error), which degrade the sensing performance severely. Aiming at minimizing the probability of total detection errors,(More)
PURPOSE To evaluate the efficacy and safety of erythrocytapheresis (ECP) in the treatment of polycythemia. METHODS Patients diagnosed with polycythemia were included in this retrospective analysis and treated with ECP (n=20) or conventional treatments (exsanguination; n=20). Blood laboratory values and adverse effects were recorded. RESULTS In(More)
In visible light communication (VLC) systems, optical orthogonal frequency division multiplexing (O-OFDM) is an appealing modulation scheme. Recently, a number of O-OFDM schemes have been proposed. Direct current optical orthogonal frequency-division multiplexing (DCO-OFDM) is one of the known O-OFDM schemes for its high spectral efficiency and(More)
In a network deploying carrier aggregation (CA) each cell can aggregate several carriers across multiple bands and different cell may aggregate different carriers, which make the inter-cell interference (ICI) very complicated. Proper carrier assignment must be applied in downlink coordinated multi-point (CoMP) with CA to deal with this problem. The optimum(More)