Per Skillermark

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In order to quantify the energy efficiency of a wireless network, the power consumption of the entire system needs to be captured. In this paper, the necessary extensions with respect to existing performance evaluation frameworks are discussed. The most important addendums of the proposed energy efficiency evaluation framework (EF) are a sophisticated power(More)
In order to quantify the energy savings in wireless networks, the power consumption of the entire system needs to be captured and an appropriate energy efficiency evaluation framework must be defined. In this paper, the necessary enhancements over existing performance evaluation frameworks are discussed, such that the energy efficiency of the entire network(More)
This paper discusses the requirements on future radio access and, based on the requirements, proposes a framework for such a system. The proposed system based on orthogonal frequency-division multiplexing supports very low latencies and data rates up to 100 Mb/s with wide area coverage and 1 Gb/s with local area coverage. Spectrum flexibility is identified(More)
This deliverable aims at refining the definition of suitable multiple access schemes for the WINNER system concept. Simulations of WINNER I candidate multiple access schemes have been carried out in different evaluation scenarios defined by the Concept Group scenarios. Based on the insights from these simulations, reference design of multiple access schemes(More)
This paper presents a study that explores the relation between how the choice and use of an app depends on the network performance. While the relation between smartphone user behavior and contextual factors has been explored in previous research, the mobile networks’ influence on the smartphone user behavior is largely unknown. Through analysis of a data(More)
In this paper, we consider the problem of joint adaptive beamforming from multiple Access Points (APs), equipped with array antennas, to multiple single-antenna User Equipments (UEs). We derive an iterative algorithm for Multi-Cell BeamForming (MCBF) under per-cell power constraints and the constraint that a UE may receive data transmission from a single(More)
Recently, several works have pointed out the negative impact of intercell interference variation on the performance of link adaptation in multi-cell single input single output (SISO) systems. However, the performance of adaptive precoder selection in multiple input multiple output (MIMO) cellular networks in the presence of interference variation is much(More)