Henrik Asplund

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This paper describes a model for mobile radio channels that includes consideration of directions of arrival and is thus suitable for simulations of the performance of wireless systems that use smart antennas. The model is specified for 13 different types of environments, covering macromicroand picocells. In this paper, a hierarchy of modeling concepts is(More)
This paper describes the attributes of the COST 259 directional channel model that are applicable for use in the design and implementation of macrocellular mobile and portable radio systems and associated technology. Special care has been taken to model all propagation mechanisms that are currently understood to contribute to the characteristics of(More)
With the continuous growth in connected devices and the need for larger bandwidth channels and greater data speeds, operating at high frequencies can be advantageous for future mobile communications in general, and for 5G-networks in particular. In this paper, the indoor coverage at different high frequencies, namely 10, 30 and 60 GHz has been analyzed in(More)
For the development of new 5G systems to operate in bands up to 100 GHz, there is a need for accurate radio propagation models at these bands that currently are not addressed by existing channel models developed for bands below 6 GHz. This document presents a preliminary overview of 5G channel models for bands up to 100 GHz. These have been derived based on(More)
Narrowband and wideband measurements of the radio channel using different combinations of transmit and receive polarization have been performed. The measurements cover a range of scenarios including urban, suburban and open terrain, as well as both outdoor and indoor terminals. The vertical-to-vertical (V-V) and horizontal-to-horizontal (H-H) polarization(More)
We analyze the clustering of scatterers in mobile radio channels, i.e, the fact that scatterers are usually not located uniformly in the whole coverage area, but tend to occur in clusters. While this has been recognized for some time, a realistic model for this phenomenon has been lacking up to now. We first analyze measurements to extract the distribution(More)
Future mobile communications systems are likely to be very different to those of today with new service innovations driven by increasing data traffic demand, increasing processing power of smart devices and new innovative applications. To meet these service demands the telecommunications industry is converging on a common set of 5G requirements which(More)
The idea of interference alignment (IA) has shown great promise in many theoretical studies. Yet it is not clear under what operating conditions it will perform better than traditional multiple access schemes under realistic network conditions. Here, we use measured channels to evaluate a number of different IA schemes and related methods, focusing on(More)
are mounted 8.5 m and 12 m above ground level, respectively, while for the mobile terminal the antenna is installed at a height 2.9 m. Abstract—This paper presents coverage and penetration loss measurements in an urban environment at 15 GHz to provide insight into the design and deployment of future 5G systems in higher frequency bands. The measurements are(More)
This document describes a general proposal for combining all relevant effects of the directional mobile radio channel. Effects included are pathloss, shadowing, small-scale fading due to interference, joint delay and azimuth spreading. The latter accounts for the clustering nature of the channel when observed with wideband and/or directionally resolving(More)