Sökning: "Volterra Series"
Hittade 5 uppsatser innehållade orden Volterra Series.
1. Modeling and Compensation of Nonlinear Distortion in High Efficient Electrodynamic Loudspeakers
Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Signaler och systemSammanfattning : Loudspeakers transform electrical energy into acoustic waves but most of the electrical energy is lost as heat. It is possible to increase the electro-acoustic efficiency by changing the electrical, mechanical or acoustical design of the loudspeaker but with these changes come unwanted side effects. LÄS MER
2. Challenging cultural identities : Between new forms of tourism and old European cities
Master-uppsats, Uppsala universitet/Teologiska institutionenSammanfattning : New forms of tourism are on the rise where the incentive to travel is not primarily induced by a country’s heritage, but by mediatized narratives, characters and locations starring in products such as movies, comics and literature. This so-called contents tourism is considered promising by some, but the question is: who benefits? Europe is often understood as the old continent, a place with a rich history. LÄS MER
3. Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion
Master-uppsats, Högskolan i Gävle/ElektronikSammanfattning : This thesis work studied the behavioral modeling, estimation of parameters, model performance and linearization of power amplifier (PA) using Digital Pre Distortion (DPD) technique. PAs are one of the fundamental block in communication systems and also one of the main sources of nonlinearities in the system, as these devices are frequently subjected to signals characterized by considerable bandwidths and non-constant envelopes due to use of modern modulation technique. LÄS MER
4. Different Digital Predistortion Techniques for Power Amplifier Linearization
Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknikSammanfattning : Linearity and high efficiency are crucial requirements for any power amplifier. However, power amplifiers have high efficiency levels when they are in non-linear regions. To overcome this issue there have been many suggestions in literature, one of the most successful methods is digital predistortion method. LÄS MER
5. Methods of Modelling Corrugators
Master-uppsats, Lunds universitet/FörpackningslogistikSammanfattning : Problem: The process of manufacturing corrugated board is a quite complicated process, when it comes to exactly understand what happens in the process. ln order to gain a better understanding and a tool for control of the corrugating process, the machine making the corrugated board, a method that possibly can describe the process is desirable. LÄS MER