Search for dissertations about: "Base stations"
Showing result 1 - 5 of 107 swedish dissertations containing the words Base stations.
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1. Blind Massive MIMO Base Stations : Downlink Transmission and Jamming
Abstract : Massive MIMO (Multiple-Input--Multiple-Output) is a cellular-network technology in which the base station is equipped with a large number of antennas and aims to serve several different users simultaneously, on the same frequency resource through spatial multiplexing. This is made possible by employing efficient beamforming, based on channel estimates acquired from uplink reference signals, where the base station can transmit the signals in such a way that they add up constructively at the users and destructively elsewhere. READ MORE
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2. On Massive MIMO Base Stations with Low-End Hardware
Abstract : Massive MIMO (Multiple-Input Multiple-Output) base stations have proven, both in theory and in practice, to possess many of the qualities that future wireless communication systems will require. They can provide equally high data rates throughout their coverage area and can concurrently serve multiple low-end handsets without requiring wider spectrum, denser base station deployment or significantly more power than current base stations. READ MORE
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3. Analysis of Radio Channel Measurements Using Multiple Base Stations
Abstract : Future wireless communication systems will utilize the spatial properties of the wireless channel to improve the spectral efficiency and thus increase capacity. This is realized by deploying multiple antennas at both the transmitter and receiver. READ MORE
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4. Base Station Coordination in Multicell MIMO Networks
Abstract : The use of multi-antenna technology, also referred to as multiple-input multipleoutput (MIMO), has been shown to improve both the achievable data rates and the link reliability in single-cell wireless systems without a need for extra power or bandwidth. The promised gains of MIMO techniques are, however, severely degraded in a multicell environment due to the presence of intercell interference,especially for users at the cell edge. READ MORE
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5. AI-Based Methods For Improved Testing of Radio Base Stations : A Case Study Towards Intelligent Manufacturing
Abstract : Testing of complex systems may often require the use of tailored-made solutions, expensive testing equipment, large computing capacity, and manual implementation work due to domain uniqueness. The aforementioned test resources are expensive and time-consuming, which makes them good candidates to optimize. READ MORE