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We study the medium access of wireless device-to-device links in industrial factory environments characterized by high reliability and low latency communication requirements. We propose fast handshake procedures between the devices and a coordinator which allows several transmitter-receiver pairs to access the same frequency resource within a cell. Our framework relies on game-theoretic stable matching...
Massive MIMO and beamforming is commonly considered as one of the key technologies for future cellular communications. It is targeted to solve the capacity requirements in enhanced mobile broadband and enable new services in other communication fields, e.g. machine type communications. In this work, we study M-MIMO technology in a novel approach, combining system simulations and modeling with hardware...
This paper contributes to the system concept of collaborative base stations from the perspective of distributed computing. Promising signal processing approaches based on terminal feedback are reviewed. Their specific advantages and disadvantages are discussed and a framework for feedback provision is presented. All proposed schemes have in common, that a mobile terminal can choose its desired receive...
Flexible and efficient spectrum usage in cellular communication systems is a key to meet the service demand of forthcoming 4G and 5G networks by 2020. Recent wide-band power measurements in an urban environment show that spectrum below 6 GHz is still under-utilized. Licensed shared access (LSA) is one technique which can be deployed to make use of these valuable resources. In this paper we highlight...
Multi-tier heterogeneous networks based on MIMO-OFDM are a promising approach to enhance coverage and capacity in next generation cellular networks. We investigate the downlink performance of such a small cell deployment based on a system-level model of a 4G network. The parameters are based on 3GPPs latest long term evolution (LTE) standard. The co-existence of a set of Macrocells with a dense small...
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