Sökning: "constellation shaping"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden constellation shaping.
1. Multidimensional Constellation Shaping for Coherent Optical Communication Systems
Sammanfattning : To overcome the increasing demands for Internet traffic, exploiting the available degrees of freedom in optical communication systems is necessary. In this thesis, we study how constellation shaping can be achieved in various dimensions and how various shaping schemes affect the whole performance in real systems. LÄS MER
2. Constellation Shaping in Optical Communication Systems
Sammanfattning : Exploiting the full-dimensional capacity of coherent optical communication systems is needed to overcome the increasing bandwidth demands of the future Internet. To achieve capacity, both coding and shaping gains are required, and they are, in principle, independent. LÄS MER
3. Voronoi Constellations for Coherent Fiber-Optic Communication Systems
Sammanfattning : The increasing demand for higher data rates is driving the adoption of high-spectral-efficiency (SE) transmission in communication systems. The well-known 1. LÄS MER
4. Accounting, Professions, and Performativity: Exploring the limits of accountingisation in professional organisations
Sammanfattning : This thesis explores the practice of calculations and their consequences in different professional contexts. Specifically, it aims to extend the discussion on the relationship between accounting and public sector professionals by elaborating on the concept of accountingisation using a performative approach. LÄS MER
5. Single frequency broadcasting networks
Sammanfattning : An Orthogonal Frequency Division Multiplexing (OFDM) schemeallows all transmitters in a radio network to transmitidentical signals in the same frequency block, forming a socalled Single Frequency Network (SFN). By avoiding frequencyreuse, substantial improvements in bandwidth utilisation arepossible. LÄS MER