Sökning: "Optimal transmit strategies"
Visar resultat 1 - 5 av 13 avhandlingar innehållade orden Optimal transmit strategies.
1. Optimal Transmit Strategies for Multi-antenna Systems with Joint Sum and Per-antenna Power Constraints
Sammanfattning : Nowadays, wireless communications have become an essential part of our daily life. During the last decade, both the number of users and their demands for wireless data have tremendously increased. Multi-antenna communication is a promising solution to meet this ever-growing traffic demands. LÄS MER
2. Coding and Transmission Strategies for Secrecy
Sammanfattning : In this thesis we consider several problems relating to information theoretic security. The wiretap channel is the simplest information theoretic setting which takes security into account, and in the first chapters of the thesis we design some practical coding schemes for this channel model. LÄS MER
3. Optimal Networking in Wirelessly Powered Sensor Networks
Sammanfattning : Wireless sensor networks (WSNs) are nowadays widely used for the long-term monitoring of small or large regions, such as lakes, forests, cities, and industrial areas. The performance of a WSN typically consists of two aspects: i) the monitoring performance, e.g. LÄS MER
4. Optimizing Energy Efficiency in Wireless Links Through Reconfigurable Intelligent Surfaces and Optimal Ratios
Sammanfattning : This thesis explores the optimization of energy efficiency (EE) in the radiolink of wireless communication systems, focusing on both the user equipment (UE) and the base station (BS). The first part of the study examines strategies to minimize the energy consumption of the UE when transmitting short data payloads, utilizing a reconfigurable intelligent surface (RIS) controlled by the BS, to improve the channel conditions. LÄS MER
5. Sensing and Control of Dynamical Systems Over Networks
Sammanfattning : Rapid advances in sensing, computing, and wireless technologies have led to significant interest in the understanding and development of wireless networked control systems. Networked control systems consist of spatially distributed agents such as plants (dynamical systems), sensors, and controllers, that interact to achieve desired objectives. LÄS MER