Sökning: "Spectrum Underlay Access"
Hittade 5 avhandlingar innehållade orden Spectrum Underlay Access.
1. On the Performance of Underlay Cognitive Radio Networks with Interference Constraints and Relaying
Sammanfattning : Efficiently allocating the scarce and expensive radio resources is a key challenge for advanced radio communication systems. To this end, cognitive radio (CR) has emerged as a promising solution which can offer considerable improvements in spectrum utilization. LÄS MER
2. Performance Analysis of Cognitive Radio Networks with Interference Constraints
Sammanfattning : To support the rapidly increasing number of mobile users and mobile multimedia services, and the related demands for bandwidth, wireless communication technology is facing a potentially scarcity of radio spectrum resources. However, spectrum measurement campaigns have shown that the shortage of radio spectrum is due to inefficient usage and inflexible spectrum allocation policies. LÄS MER
3. On the Performance Assessment of Advanced Cognitive Radio Networks
Sammanfattning : Due to the rapid development of wireless communications together with the inflexibility of the current spectrum allocation policy, radio spectrum becomes more and more exhausted. One of the critical challenges of wireless communication systems is to efficiently utilize the limited frequency resources to be able to support the growing demand of high data rate wireless services. LÄS MER
4. Cell-Free Massive MIMO: Distributed Signal Processing and Energy Efficiency
Sammanfattning : In this era of rapid wireless technological advancements, wireless connectivity between humans, humans with machines, and machines with machines is gradually becoming an absolute necessity. The initial motivation for wireless connectivity was to enable voice communication between humans over a geo-graphical area. LÄS MER
5. Multi-Cell Massive MIMO: Power Control and Channel Estimation
Sammanfattning : Cellular network operators have witnessed significant growth in data traffic in the past few decades. This growth occurs due to the increase in the number of connected mobile devices, and further, the emerging mobile applications developed for rendering video-based on-demand services. LÄS MER