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Device-to-device (D2D) communication has attracted great attention and becomes a promising technology for future wireless networks. Besides two UEs communicating directly without going through the base station, D2D communication can be further broadened to multi-hop D2D communication, for example, a UE may serve as a relay for some D2D pair. In this work, we perform system-level simulation studies...
Device-to-device (D2D) communication has attracted great attention and becomes a promising technology for future wireless networks. In this work, we perform system-level simulation studies on multi-hop D2D communications overlay LTE networks, i.e., D2D multi-hop links are given dedicated cellular resources in LTE networks. There still exist intra-cell interference and inter-cell interference from...
Device-to-device (D2D) communications are usually considered to be two user equipment units (UEs) communicating directly without going through the central base station (BS). In fact, they can be further broadened to multihop D2D communications in which a UE may help other UEs communicate with each other or assist other UEs to communicate with the BS. In this paper, we investigate a scenario of multihop...
Device-to-device (D2D) communication underlaying a cellular network is a promising technology in the future wireless networks to improve network capacity and user experience. In current works, D2D communications are considered as two user equipments (UEs) communicating directly without going through the central base station (BS). In fact, D2D communications can be further broadened to multi-hop D2D...
Heterogeneous network via the deployment of a diverse set of base stations (BSs) has become a hot research topic to improve spectral efficiency and network capacity. In this paper, we consider a cellular network with multiple low-power relay nodes (RN) deployed in each cell to help the downlink transmission between the BS and the user equipments (UE). With conventional mobile association schemes,...
Device-to-device (D2D) communication underlaying cellular networks will become an important technology in the future networks such as International Mobile Telecommunications-Advanced (IMT-Advanced) to improve spectral efficiency. For the multi-user multi-input multi-output (MU-MIMO) architecture with multi-antenna base station, design and optimization of D2D communications underlaying such a network...
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