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In this work, we propose a dynamic distributed resource sharing scheme which jointly considers mode selection, resource allocation, and power control in a unified framework for general D2D communications. Specifically, we model the joint problem of mode selection and resource allocation as a hedonic coalition formation game, and develop a coalition formation process based on the switch rule. Through...
Faced with the shortage of the radio resource in recent years, device-to-device (D2D) communication as an underlay to cellular networks has drawn much attention. Since D2D links will reuse the spectrum resources of cellular users, which will cause severe interference if not well controlled. In this paper we propose a spectrum allocation algorithm based on auction theory and a modified multi-auctioneer...
Radio interfaces of satellite component of the IMT-Advanced system were recently developed by International Telecommunication Union — Radiocommunication (ITU-R), and they were specified in the Recommendation ITU-R M.2047. The set of techniques specified in the Recommendation can be used to provide high quality mobile satellite services with efficient spectrum utilization, and the candidate services...
We propose a time variation channel estimation method for the Time Division Duplex-Long Term Evolution (TDD-LTE) uplink in the high speed train (HST) environment. In the transform domain, based on the estimated channel parameters of the two block pilots, the generalized complex exponential basis expansion model (GCE-BEM) is firstly employed to estimate the channel parameters of the data symbols between...
In this paper, the beamforming designs for uplink virtual MIMO systems are investigated. In such systems, the most challenging difficulty in beamforming designs comes from the fact that the nodes consisting the virtual MIMO are subjected to individual power constraints or named per-antenna power constraints instead of sum power constraints. The instinct individual power constraints for virtual MIMO...
The problem of multi-cell multi-user uplink sum-power minimization with required quality of service (QoS) under imperfect Channel State Information (CSI) and Probabilistic Contraints (PrCons) is solved. This paper is an extension of our previous work on statistical-CSI and PrCons. Deterministic constraints at times are infeasible or too expensive to implement, further, the CSI could be imperfect due...
In this paper, the outage probability of the uplink is analyzed for a land mobile satellite (LMS) cooperative system, which consists of a satellite (the destination), a mobile terminal (the source) and a relay node on the ground. It is assumed that the source-satellite (S-D) link and the relay-satellite (R-D) link experience independent shadowed Rician fading, and the source-relay (S-R) link experiences...
This paper analyzes the selection of underlay (reuse mode) or overlay (dedicated mode) for device-to-device (D2D) communication in a multi-cell scenario with shared relays. Two reuse cases that D2D communication reuses the same uplink resources or downlink resources as for cellular communication are considered. The study focuses on the location changes of cellular user, the distance changes of D2D...
Visible light communication (VLC) has been considered as a promising technique for broadband wireless access. In this paper, we propose and experimentally demonstrate a novel high-speed LED based VLC local area network to provide beyond 10Gb/s optical wireless access for massive users based on star topology architecture. Fiber link is used as the bidirectional transmission backbone of the VLC network...
Base Station Cooperation (BSC), has been a promising technique for combating the Inter-Cell Interference (ICI) by exchanging information through a high-speed optical fiber back-haul to increase the diversity gain. In this paper, we propose a novel pilot symbol assisted data fusion scheme for Uplink BSC (UBSC). Furthermore, the proposed scheme exploits the pre-defined pilot symbols as the sample of...
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