Sökning: "Radio"
Visar resultat 26 - 30 av 1095 avhandlingar innehållade ordet Radio.
26. Distributed Detection in Cognitive Radio Networks
Sammanfattning : One of the problems with the modern radio communication is the lack of availableradio frequencies. Recent studies have shown that, while the available licensed radiospectrum becomes more occupied, the assigned spectrum is significantly underutilized. LÄS MER
27. Prediction of Mobile Radio Channels : Modeling and Design
Sammanfattning : Prediction of the rapidly fading envelope of a mobile radio channel enables a number of capacity improving techniques like fast resource allocation and fast link adaptation. This thesis deals with linear prediction of the complex impulse response of a channel and unbiased quadratic prediction of the power. LÄS MER
28. Modeling of Radio Emission from Supernovae : Application to Type Ia
Sammanfattning : The interaction of supernova (SN) ejecta with the circumstellar medium (CSM) drives a strong shock wave into the CSM. These shocks are ideal places where effective particle acceleration and magnetic field amplification can take place. LÄS MER
29. The Radio Frequency Single-Electron Transistor: Noise Properties and its Potential for Detecting Electrons on Helium
Sammanfattning : In this thesis the noise in the single electron transistor (SET) has been investigated.The charge sensitivity for the radio frequency single electron transistor(RF-SET) was measured. The demonstrated result is better than the previouslybest reported value both at 40 mK, and at 4.2 K. LÄS MER
30. Power and frequency assignment in HF Radio Networks
Sammanfattning : .... LÄS MER