Sökning: "methods of equalization"
Visar resultat 11 - 15 av 28 avhandlingar innehållade orden methods of equalization.
11. Asthma in young children : epidemiology, burden of asthma and effects of a parental information program
Sammanfattning : Background: The prevalence of asthma is usually estimated on the basis of the results of questionnaires. A comparison with prevalence according to medical records has not been reported before. Adherence to medical advice and prescriptions are generally poor in chronic diseases like asthma. LÄS MER
12. Reduced Receivers for Faster-than-Nyquist Signaling and General Linear Channels
Sammanfattning : Fast and reliable data transmission together with high bandwidth efficiency are important design aspects in a modern digital communication system. Many different approaches exist but in this thesis bandwidth efficiency is obtained by increasing the data transmission rate with the faster-than-Nyquist (FTN) framework while keeping a fixed power spectral density (PSD). LÄS MER
13. Frequency Noise in Coherent Optical Systems: Impact and Mitigation Methods
Sammanfattning : The increase in capacity demand along with the advancement in digital signal processing (DSP) have recently revived the interest in coherent optical communications and led to its commercialization. However, design and development of robust DSP algorithms for example for carrier phase recovery (CPR) becomes complex as we opt for high order modulation formats such as 16QAM and beyond. LÄS MER
14. Estimation of Discrete Parameters in Linear Systems
Sammanfattning : Linear models are the by far most commonly used approach for describing physical signals and systems. As a result, the theory of linear models is quite extensive in areas like control theory and signal processing. However, in many applications a linear model is adequate only if some information of discrete nature is available. LÄS MER
15. Channel Related Optimization of Wireless Communication Systems
Sammanfattning : This thesis deals with different optimization problems in the design of wireless communication systems. It is mainly directed to the design of systems based on multicarrier techniques and orthogonal frequency division multiplex, OFDM, but some of the problems apply to single carrier systems as well. LÄS MER