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Social relations between users is a key factor impacting the willingness of users to participate in D2D delivery. However, close social ties and proximity location of users can not always be satisfied due to the time and space limits. In this paper, we introduce social credit to stimulate selfish users for an active D2D communication networks, which is a global and wide social feature measure. Queuing...
Battery-powered wireless nodes' lifetime can be significantly extended by integrating energy-harvesting function. As energy-harvesting is a highly varying process, the guarantee of batteries' sustainability becomes extremely crucial for nodes that record and deliver multimedia content. We in this paper propose a sustainability-driven power control scheme for wireless transmission with energy-harvesting...
Power control strategy that guarantees users' quality-of-service (QoS) in a power-efficient manner is a critical yet challenging issue in distributed wireless networks. In this paper, we investigate the problem by considering the energy consumption and QoS provisioning simultaneously, where the QoS requirement is specified by the target signal-to- interference-plus-noise ratio (SINR). The problem...
Intercell interference severely degrades the performance of cell-edge users in cellular networks. To effectively manage the intercell interference, a heuristic scheme that jointly considers user scheduling and power control is proposed for multicell orthogonal frequency division multiple-access (OFDMA) networks with BS cooperation and limited backhaul capacity. First, a greedy user scheduling is proposed,...
In recent years, interference management designing has been studied widely for high data-rate wireless systems in next generation cellular systems such as 3GPP long term evolution (LTE), LTE-advanced, and worldwide interoperability for microwave access (WiMAX), where highly dense reuse of spectrum is required. Interference management includes receiver processing, interference randomization by frequency...
This paper presents a transmitting scheme and corresponding user selection algorithms for simultaneous unicast and multicast services. On the subcarriers assigned to multicast services, BS transmits the superposition of unicast and multicast signals. Block diagonalization (BD) and power control are applied to unicast signal, to make sure interference from unicast not reduce the rate of multicast signal...
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