Franz Heiser

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The functionality of a radio base station (RBS) is divided into two main parts: userplane functions and control-plane functions. The user-plane functions are associated with transport, baseband, radio and the antenna. The control-plane functions pertain to the transmission of user data and operation and maintenance (O&M) data. Ericsson’s RBS is based on the(More)
In order to evaluate and increase modularity this paper combines a method for visualizing and measuring software architectures and two algorithms for decoupling. The combination is tested on a software system at Ericsson. Our analysis show that the system has one large cluster of components (18% of the system, a Core), all interacting with each other. By(More)
The ratio of double-to-single ionization of He has been measured between 280 eV and 1210 eV to investigate its energy dependence in the intermediate region. The new intermediate energy measurement, compared with the most recent theories of Pan and Kelly and of Hino and Hino et al., show the importance of including not only ground state but also final state(More)
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