Sökning: "DF Relay"

Visar resultat 1 - 5 av 12 uppsatser innehållade orden DF Relay.

  1. 1. Performance Analysis of Piecewise-and-Forward Relay Network on Rayleigh Fading Channel

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

    Författare :Farnaz Gharari; [2015]
    Nyckelord :Cooperative communications; Relay Networks; Rayleigh channels; Radio communication Protocols; Master of Science Programme in Electrical Engineering with emphasis on Signal Processing Masterprogram i Elektroteknik med inriktning mot signalbehandling;

    Sammanfattning : The rapid changes and developments in cellular and wireless networks aim to provide more reliable communications with high data rate transmission. So far, one solution which is being considered for improving the reliability and eciency of mobile communications is cooperative communications. LÄS MER

  3. 2. Measurement Based Vehicle-to-Vehicle Multi-link Channel Modeling and Relaying Performance

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Xi Chen; [2015]
    Nyckelord :V2V; wireless; channel model; multilink; relaying; sum of sinusoids; correlated Gaussian; maximum likelihood estimation; Technology and Engineering;

    Sammanfattning : There has been intense research in vehicular communication in order to provide reliable low-latency vehicular communication links for developing intelligent transportation system (ITS). As one of the important properties, vehicle-to-vehicle (V2V) communication is learned to be inherently non-stationary due to the high mobility of both transmitter (TX) and receiver (RX). LÄS MER

  4. 3. 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

  5. 4. Performance Analysis of 3-hop using DAF and DF over 2-hop Relaying Protocols

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Faisal Mehmood; Muneeb Ejaz; [2013]
    Nyckelord :Bit Error Rate; Cognitive Radio; Decode Amplify and Forward; Energy Detection; Probability of Detection; Rayleigh Fading; Relay Network;

    Sammanfattning : In wireless Communication, the need of radio spectrum increases nowadays. But in the system we are losing approximately 82-86% of spectrum most of the time due to the absence of Primary User (PU). To overcome this issue Cognitive Radio (CR) is an admirable approach. LÄS MER

  7. 5. Performance Analysis of OSTBC with Hybrid Decode-Amplify and Forward relay network

    Master-uppsats, Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Författare :Kanoksak Wannatrong; Mohammed Abul Hayat; [2013]
    Nyckelord :Cooperative communication; symbol error rate; moment generating function; orthogonal space-time block code. ;

    Sammanfattning : In the last few decades, the innovation of Wireless communication has been developed very fast in order to improve the performance of communication systems. Especially,a concept of Multiple Input and Multiple Output (MIMO) is purposed to fulfill a high data rate service such as high quality video conference. LÄS MER