Sökning: "radio spectrum utilization"
Visar resultat 1 - 5 av 24 uppsatser innehållade orden radio spectrum utilization.
1. Application of Learning-based Resource Allocation Scheme for Different UE Antenna Orientations
Master-uppsats, KTH/Skolan för elektro- och systemteknik (EES)Sammanfattning : One of the main tasks of the fifth generation (5G) network systems is the ability to provide high-data rates with always-on connectivity to the ever-increasing number of smart devices, especially for high mobility users. By cooperation within a number of the Remote Radio Heads (RRHs), higher system capacity can be achieved based on the Cloud Radio Access Network (CRAN) architecture for the 5G network systems. LÄS MER
2. Performance Analysis of a MIMO Cognitive Cooperative Radio Network with Multiple AF Relays
Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandlingSammanfattning : With the rapid growth of wireless communications, the demand for the various multimedia services is increasing day by day leading to a deficit in the frequency spectrum resources. To overcome this problem, the concept of cognitive radio technology has been proposed which allows the unlicensed secondary user (SU) to access the licensed spectrum of the primary user (PU), thus improving the spectrum utilization. LÄS MER
3. Fuzzy Based power control system Using ANFIS and MIMO-OFDM Techniques in Cognitive Radio Networks
Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandlingSammanfattning : Cognitive Radio technology is used for efficient utilization of the spectrum. There are two types of users, one is the Primary user (PU), and the second one is the Secondary user (SU). In those users, PU is having the license to use the spectrum. The SU does not have the license to use the spectrum. LÄS MER
4. The Performance of Dual-Hop Decode-and-Forward Underlay Cognitive Relay Networks with Interference Power Constraints over Weibull Fading Channels
Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskapSammanfattning : With the rapid development and the increasing use of wireless devices, spectrum scarcity has become a problem. The higher frequencies have bad propagation characteristics and the lower frequencies have low data rates, therefore the radio spectrum that is available for efficient wireless transmission is a limited resource. LÄS MER
5. Study and Comparison of Spectrum Sensing Methods
Master-uppsats, KTH/Skolan för informations- och kommunikationsteknik (ICT)Sammanfattning : Efficient utilization of frequency bands has attracted more and more attention. Most of the licensed spectrum nowadays is under-utilized and some unlicensed services are allowed to use the available spectrum without causing harmful interference to the primary users. Therefore, unlicensed users should be able to detect spectrum holes reliably. LÄS MER