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The paper investigates a decode-and-forward buffer-aided relay selection for an underlay cognitive radio network in the presence of an eavesdropper. The secondary users operating on the same band used by primary user, so the QoS of primary user should be guaranteed. Eavesdropper can intercept the information transmission from the secondary transmitter or relay to the corresponding receiver, which...
This paper proposes an enhanced scheme based on Associativity-Based Multicast Routing (ABAM) for Cognitive Radio Mobile Ad Hoc Networks (CR MANET) to further improve the stability of the multicast tree. After carefully studying the original ABAM design, the enhanced scheme is proposed from two aspects. One is in the tree formation phase, while the other is for node mobility handling. Both the original...
This paper developed a joint power allocation and beamforming scheme to minimize the energy consumed per bit transmitted of the non-regenerative two-way multiple input multiple output (MIMO) relay network, while satisfying the QoS requirement of the two sources. Due to the non-convexity, the objective problem is decomposed into two sub-problems: transmit power allocation and transceiver beamforming...
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