Communications Research Centre

Displaying 1-3 of 3 results

  • White Papers // May 2012

    Opportunistic Routing in Tactical Networks

    Providing network functionality for military VHF tactical networks has been problematic for many years. Existing schemes have struggled to provide multi-hop transmission of combined voice and data traffic in this dynamic and very low bandwidth environment. Research has shown that the overhead introduced by existing MANET routing techniques can swamp...

    Provided By Communications Research Centre

  • White Papers // May 2012

    On the Error-Rate Performance of 4-State Turbo Codes With Puncture-Constrained DRP Interleavers

    It has often been demonstrated that conventional 4- state turbo codes do not perform well in either the waterfall or error-rate flare regions due to poor inherent convergence and distance properties, especially for highly-punctured codes. This paper shows that the opposite can be true when carefully chosen data and parity...

    Provided By Communications Research Centre

  • White Papers // Sep 2010

    Interference Characteristics in Power-Controlled Cognitive Radio Networks

    Dynamic spectrum access using cognitive radios has been proposed as an approach to meet the increasing demand for radio spectrum. Under this novel access paradigm unlicensed cognitive radios are allowed to utilize the white spaces across licensed spectrum on a non-interfering basis. Realization of this concept therefore requires a model...

    Provided By Communications Research Centre

  • White Papers // Sep 2010

    Interference Characteristics in Power-Controlled Cognitive Radio Networks

    Dynamic spectrum access using cognitive radios has been proposed as an approach to meet the increasing demand for radio spectrum. Under this novel access paradigm unlicensed cognitive radios are allowed to utilize the white spaces across licensed spectrum on a non-interfering basis. Realization of this concept therefore requires a model...

    Provided By Communications Research Centre

  • White Papers // May 2012

    Opportunistic Routing in Tactical Networks

    Providing network functionality for military VHF tactical networks has been problematic for many years. Existing schemes have struggled to provide multi-hop transmission of combined voice and data traffic in this dynamic and very low bandwidth environment. Research has shown that the overhead introduced by existing MANET routing techniques can swamp...

    Provided By Communications Research Centre

  • White Papers // May 2012

    On the Error-Rate Performance of 4-State Turbo Codes With Puncture-Constrained DRP Interleavers

    It has often been demonstrated that conventional 4- state turbo codes do not perform well in either the waterfall or error-rate flare regions due to poor inherent convergence and distance properties, especially for highly-punctured codes. This paper shows that the opposite can be true when carefully chosen data and parity...

    Provided By Communications Research Centre