Sökning: "Cognitive Radio"

Visar resultat 6 - 10 av 65 uppsatser innehållade orden Cognitive Radio.

  1. 6. Optimal Power Allocation and Ergodic Capacity in Cognitive Radio Network

    Master-uppsats, KTH/Skolan för elektro- och systemteknik (EES)

    Författare :Guanren Wen; [2016]
    Nyckelord :;

    Sammanfattning : Cognitive radio network allows the secondary users (SUs) in a secondary communication network (SCN) coexist with priority users in a priority communication network (PCN). The interference caused by SCN to PCN is required to be rational and not affected the quality of server within the PCN to each priority users (PUs). LÄS MER

  3. 7. Performance Analysis of a Cooperative Communication Network Over κ - μ Shadowed Fading for Different Relaying Protocols

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Författare :Alekhya Kodide; [2016]
    Nyckelord :Cooperative communications; κ−µ shadowed fading; relaying protocols; outage probability;

    Sammanfattning : With the fast development of today’s multimedia services, engineers face a huge hurdle that is, the overwhelming need of highly reliable communication over long distances. Cooperative communication is a novel concept which tackles this problem effectively. LÄS MER

  4. 8. Exploiting the Direct Communication Link for Enhancing Effective Capacity Performance of Cognitive Radio Relay Networks

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Md Abdul Matin Biswas; [2014]
    Nyckelord :Cognitive Radio; Quality of Service QoS ; Effective Capacity; Cooperative Relaying; Cognitive Relay Networks; Peak Interference Power Constraint; Delay QoS Constraint;

    Sammanfattning : Nowadays, cognitive radio (CR) is a promising concept to improve the radio spectrum exploitation. CR has tremendous ability to enhance spectrum efficiency by allowing secondary users (SUs) to access licensed radio spectrum resource which is currently not being used by primary users (PUs). LÄS MER

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

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för tillämpad signalbehandling

    Författare :Mahesh Aleti; Rahamatulla Syed; Rajendra Prasad Chennupati; [2014]
    Nyckelord :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;

    Sammanfattning : 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

  7. 10. 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 ingenjörsvetenskap

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

    Sammanfattning : 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