Sökning: "Channel measurements"
Visar resultat 1 - 5 av 310 avhandlingar innehållade orden Channel measurements.
1. MIMO Channels - Measurements and Analysis
Sammanfattning : Providing increased transmission speed, quality and an efficient spectrum utilization is crucial for high speed wireless services of today and the future. This thesis is a collection of papers that address an important step in that direction -- the utilization of the spatial domain of the wireless channel. LÄS MER
2. Massive MIMO for Dependable Communication
Sammanfattning : Cellular communication is constantly evolving; currently 5G systems are being deployed and research towards 6G is ongoing. Three use cases have been discussed as enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), and ultra-reliable low-latency communication (URLLC). LÄS MER
3. Multiple Antenna Terminals in Realistic Environments - A Composite Channel Modeling Approach
Sammanfattning : For evaluation of specific antenna arrangements in wireless communication systems we need physical channel models that take into account also the directional domain of the propagation channel. In this thesis we investigate, validate and propose a practical approach to wireless channel modeling and, particularly, to mobile communication systems. LÄS MER
4. Measurement Based Channel Characterization and Modeling for Vehicle-to-Vehicle Communications
Sammanfattning : Vehicle-to-Vehicle (V2V) communication is a challenging but fast growing technology that has potential to enhance traffic safety and efficiency. It can also provide environmental benefits in terms of reduced fuel consumption. LÄS MER
5. Iterative receivers with channel estimation for MIMO and multi-user OFDM systems
Sammanfattning : The traffic in wireless networks has been showing an exponential growth over the last decade. In order to meet the demand, and support a continuation of this growth, the scarce radio resources need to be efficiently used. LÄS MER