Essays about: "relay networks"

Showing result 21 - 25 of 56 essays containing the words relay networks.

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

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

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

    Abstract : 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). READ MORE

  3. 22. 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

  4. 23. Analysis and Optimization of Transmission Strategies for Two Hop Networks with Multiple Antennas

    University essay from KTH/Kommunikationsteori; KTH/ACCESS Linnaeus Centre

    Author : MUHAMMAD NAEEM ADIL; [2013]
    Keywords : ;

    Abstract : Two hop relay based networks consist of three network nodes: source,relay station, and destination in which relay station assists the sourceto communicate reliably and efficiently with the destination. Moreover,these networks provide cost efficient solution for achieving highdata rate via cooperative communication between relays with singleantennas. READ MORE

  5. 24. Adaptive Modulation for Dual-Hop Amplify-and-Forward Relaying Networks with Partial Relay Selection under Co-Channel Interference

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Sohaib Ahmed Siddiqui; Mohammad Abbas Khan; [2013]
    Keywords : Amplify-and-forward; BER; Outage Probability; SNR; Spectral Efficiency;

    Abstract : A new era of wireless communications combats with many challenges, including the performance issues and the demand of higher data rate. Upcoming generations of wireless communications will bear the resemblance in terms of same issues. READ MORE

  6. 25. Study of Interference Alignment

    University essay from KTH/Kommunikationsteori; KTH/ACCESS Linnaeus Centre

    Author : Hazhir Shokri Razaghi; [2013]
    Keywords : ;

    Abstract : The concept of interference alignment has recently become one of the importanttools to analyze the capacity of many multiuser communication networks,e.g. K-user interference channel, wireless X networks, multi hop interferencenetworks, etc. READ MORE