Essays about: "radio spectrum utilization"

Showing result 1 - 5 of 24 essays containing the words radio spectrum utilization.

1. 1. Application of Learning-based Resource Allocation Scheme for Different UE Antenna Orientations

   University essay from KTH/Skolan för elektro- och systemteknik (EES)

   Author : Jipeng Li; [2017]
   Keywords : ;

   Abstract : 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. READ MORE

3. 2. Performance Analysis of a MIMO Cognitive Cooperative Radio Network with Multiple AF Relays

   University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

   Author : Advaita Advaita; Mani Meghala Gali; [2016]
   Keywords : Cognitive radio; Cooperative communications; Space time coding; MIMO systems; Outage probability;

   Abstract : 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. READ MORE

4. 3. Fuzzy Based power control system Using ANFIS and MIMO-OFDM Techniques in Cognitive Radio Networks

   University essay from Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

   Author : Mahesh Aleti; Rahamatulla Syed; Rajendra Prasad Chennupati; [2014]
   Keywords : Cognitive Radio; Power Control; the Fuzzy Interference System FIS ; ANFIS; “MIMO” “Multiple Input Multiple Output” ; “OFDM” “Orthogonal Frequency Division Multiplexing” ; AWGN; BER; SNR; Eb N0;

   Abstract : 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. READ MORE

5. 4. The Performance of Dual-Hop Decode-and-Forward Underlay Cognitive Relay Networks with Interference Power Constraints over Weibull Fading Channels

   University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

   Author : Andawattage Chaminda Janaka Samarasekera; [2014]
   Keywords : Cognitive Radio; Weibull Fading Channels; Cooperative Communication; Cognitive Relay Networks;

   Abstract : 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. READ MORE

6. 5. Study and Comparison of Spectrum Sensing Methods

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Huimei Lu; [2014]
   Keywords : cognitive radio; spectrum sensing; PSE; MTSE; FBSE;

   Abstract : 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. READ MORE