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The investigation and prediction of new trends and technologies for mobile cellular networks is of utmost importance for researchers and network providers to quickly identify promising developments. With the verge of the fifth generation of mobile communications (5G), networks become more and more heterogeneous and dynamic while the amount of active users within a cell keeps ever increasing. Therefore,...
Research and development of mobile communications systems require a detailed analysis and evaluation of novel technologies to further enhance spectral efficiency, connectivity and reliability. Due to the exponentially increasing demand of mobile broadband data rates and challenging requirements for latency and reliability, mobile communications specifications become increasingly complex. For this...
With the persistent densification of cellular networks, especially in urban environments, three-dimensional beam-forming utilizing full dimension MIMO antenna arrays becomes of interest for mobile communications, since it allows to mitigate the inter-cell interference and enables high order spatial multiplexing of a multitude of users. In this paper, we consider beamformer optimization with the goal...
Due to the small wavelengths at millimetre wave frequencies, antenna arrays with dozens of elements fit easily even in hand-held devices. As RF chains are power hungry and costly, all-digital approaches are impractical and analogue-digital co-designs are likely to come. Common for all approaches is a dimensional reduction of the large MIMO channel. This study compares Antenna Selection (AS) and Hybrid...
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