Sökning: "signalbehandling"
Visar resultat 21 - 25 av 672 avhandlingar innehållade ordet signalbehandling.
21. Characterization and Linearization of Multi-band Multi-channel RF Power Amplifiers
Sammanfattning : The World today is deeply transformed by the advancement in wireless technology. The envision of a smart society where interactions between physical and virtual dimensions of life are intertwined and where human interaction is mediated by machines, e.g., smart phones, demands increasingly more data traffic. LÄS MER
22. Coordinated Precoding for Multicell MIMO Networks
Sammanfattning : Enabling multiple base stations to utilize the spatial dimension in a coordinated manner has been shown to be a fruitful technique for improving the spectral efficiency in wireless interference networks. This thesis considers multicell systems where base stations and mobile stations are equipped with multiple antennas. LÄS MER
23. Distributed Coordination in Multiantenna Cellular Networks
Sammanfattning : Wireless communications are important in our highly connected world. The amount of data being transferred in cellular networks is steadily growing, and consequently more capacity is needed. This thesis considers the problem of downlink capacity improvement from the perspective of multicell coordination. LÄS MER
24. Transmission Optimization for High Throughput Satellite Systems
Sammanfattning : Demands on broadband data service are increasing dramatically each year. Following terrestrial trends, satellite communication systems have moved from the traditional TV broadcasting to provide interactive broadband services even to urban users. LÄS MER
25. Digital Baseband Modeling and Correction of Radio Frequency Power Amplifiers
Sammanfattning : Aspects related to behavioral modeling and correction of distortions for radio frequency (RF) power amplifiers (PAs) are treated in the thesis. When evaluating the performance of a behavioral model it is important to, first of all, use an evaluation criterion, and second, make sure that the criterion actually tells something about the behavior one wishes to describe. LÄS MER