University Cadi Ayyad

Displaying 1-5 of 5 results

  • White Papers // May 2012

    Rate Allocation for Layered Multicast Streaming with Inter-Layer Network Coding

    Multi-layer video streaming allows to provide different video qualities to a group of multicast receivers with heterogeneous receive rates. The number of layers received deter-mines the quality of the decoded video stream. For such layered multicast streaming, network coding provides higher capacity than multicast routing. Network coding can be performed...

    Provided By University Cadi Ayyad

  • White Papers // Dec 2011

    VoIPiggy: Implementation and Evaluation of a Mechanism to Boost Voice Capacity in 802.11WLANs

    Supporting voice traffic in existing WLANs results extremely inefficient, given the large overheads of the protocol operation and the need to prioritize this traffic over, e.g., bulky transfers. In this paper, the authors propose a simple scheme to improve the efficiency of WLANs when voice traffic is present. The mechanism...

    Provided By University Cadi Ayyad

  • White Papers // May 2011

    Low-Complexity Power and Bit Allocation Algorithm for Multiuser MIMO-OFDM Systems

    In this paper, the authors present a low-complexity bit and power allocation algorithm for multiuser MIMO-OFDM downlink transmission. In order to minimize the total transmit power under the condition that users'QoS requirements are satisfied, a novel resource allocation scheme is proposed to exploit the multiuser diversity gain. The proposed algorithm...

    Provided By University Cadi Ayyad

  • White Papers // Jul 2010

    3D Model Retrieval Based on 3D Discrete Cosine Transform

    The content-based retrieval systems for 3D models on the Web become necessary since digital databases of 3D objects are growing. In this paper, the authors propose a new method to describe 3D models. This method is based on 3D discrete cosine transform which is applied for the voxelized 3D model....

    Provided By University Cadi Ayyad

  • White Papers // Oct 2008

    Evaluation Methodology for Fake Samples Detection in Biometrics

    Now-a-days biometrics is being used in many applications where security is required. This fact causes that new threatens have appeared and that the number of attempts to break biometric systems has increased. From all potential attacks, those involving damage or thefts to users are the most worrying. Most of them...

    Provided By University Cadi Ayyad

  • White Papers // Dec 2011

    VoIPiggy: Implementation and Evaluation of a Mechanism to Boost Voice Capacity in 802.11WLANs

    Supporting voice traffic in existing WLANs results extremely inefficient, given the large overheads of the protocol operation and the need to prioritize this traffic over, e.g., bulky transfers. In this paper, the authors propose a simple scheme to improve the efficiency of WLANs when voice traffic is present. The mechanism...

    Provided By University Cadi Ayyad

  • White Papers // May 2012

    Rate Allocation for Layered Multicast Streaming with Inter-Layer Network Coding

    Multi-layer video streaming allows to provide different video qualities to a group of multicast receivers with heterogeneous receive rates. The number of layers received deter-mines the quality of the decoded video stream. For such layered multicast streaming, network coding provides higher capacity than multicast routing. Network coding can be performed...

    Provided By University Cadi Ayyad

  • White Papers // Oct 2008

    Evaluation Methodology for Fake Samples Detection in Biometrics

    Now-a-days biometrics is being used in many applications where security is required. This fact causes that new threatens have appeared and that the number of attempts to break biometric systems has increased. From all potential attacks, those involving damage or thefts to users are the most worrying. Most of them...

    Provided By University Cadi Ayyad

  • White Papers // Jul 2010

    3D Model Retrieval Based on 3D Discrete Cosine Transform

    The content-based retrieval systems for 3D models on the Web become necessary since digital databases of 3D objects are growing. In this paper, the authors propose a new method to describe 3D models. This method is based on 3D discrete cosine transform which is applied for the voxelized 3D model....

    Provided By University Cadi Ayyad

  • White Papers // May 2011

    Low-Complexity Power and Bit Allocation Algorithm for Multiuser MIMO-OFDM Systems

    In this paper, the authors present a low-complexity bit and power allocation algorithm for multiuser MIMO-OFDM downlink transmission. In order to minimize the total transmit power under the condition that users'QoS requirements are satisfied, a novel resource allocation scheme is proposed to exploit the multiuser diversity gain. The proposed algorithm...

    Provided By University Cadi Ayyad