Sökning: "peak-to-average power ratio"
Visar resultat 6 - 10 av 22 avhandlingar innehållade orden peak-to-average power ratio.
6. Theory and Design of Wideband Doherty Power Amplifiers
Sammanfattning : The Doherty power amplifier (DPA) is one of the most popular power amplifier architectures for obtaining high average efficiency for modern communication signals with high peak-to-average power ratios (PAPR). However, the DPA suffers from often having narrowband performance which limits its capabilities in wideband and/or multi-standard microwave and radio frequency applications. LÄS MER
7. High-efficiency Power Amplification Techniques for Wireless Transmitters
Sammanfattning : The low efficiency of existing power amplifiers (PAs) is causing excessive energy consumption in wireless systems. Improving the PA efficiency is therefore of great environmental and economical importance. LÄS MER
8. Theory and Design of Efficient Active Load Modulation Power Amplifiers
Sammanfattning : The increasing demand for mobile data traffic has put new challenges and requirements for the development of the wireless communication infrastructure. The performance of the RF power amplifier (PA) is, in particular, of great importance, since it is the key building block for microwave transmitters in base stations and radio link equipment. LÄS MER
9. Enhancing Radio Frequency System Performance by Digital Signal Processing
Sammanfattning : In this thesis measurement systems for the purpose of characterization of radio frequency power amplifiers are studied. Methods to increase the speed, accuracy, bandwidth, as well as to reduce the sampling requirements and testing cost are presented. LÄS MER
10. On the performance of Massive MIMO systems with single carrier transmission and phase noise
Sammanfattning : In the last decade we have experienced a rapid increase in the demand for high data rates over cellular networks. This increase has been partly satisfied by the introduction of multi-user multiple-input multiple-output (MU-MIMO). LÄS MER