The Chinese University of Hong Kong

Displaying 1-7 of 7 results

  • White Papers // May 2012

    Power Allocation for Multiuser Cooperative Communication Networks Under Relay Selection Degree Bounds

    This paper considers the joint power allocation and relay selection problem in multiuser cooperative communication networks, where one user can only seek a limited number of relays for cooperation. This relay selection degree bound is of practical significance. The goal is to optimize the relay selection and power allocation in...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    ADAM: An Automatic and Extensible Platform to Stress Test Android Anti-Virus Systems

    With the rising threat of smartphone malware, both academic community and commercial anti-virus companies proposed many methodologies and products to defend against smartphone malware. Thus, how to assess the effectiveness of these defense mechanisms against existing and unknown malware becomes important. The authors propose ADAM, an automated and extensible system...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    Analog Network Coding in General SNR Regime: Performance of a Greedy Scheme

    The problem of maximum rate achievable with analog network coding for a unicast communication over a layered relay network with directed links is considered. A relay node performing analog network coding scales and forwards the signals received at its input. Recently this problem has been considered under certain assumptions on...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    A Cost-Based Heterogeneous Recovery Scheme for Distributed Storage Systems With RAID-6 Codes

    Modern distributed storage systems provide large-scale, fault-tolerant data storage. To reduce the probability of data unavailability, it is important to recover the lost data of any failed storage node efficiently. In practice, storage nodes are of heterogeneous types and have different transmission bandwidths. Thus, traditional recovery solutions that simply minimize...

    Provided By The Chinese University of Hong Kong

  • White Papers // Mar 2012

    On the Speedup of Single-Disk Failure Recovery in XOR-Coded Storage Systems: Theory and Practice

    Modern storage systems stripe redundant data across multiple disks to provide availability guarantees against disk failures. One form of data redundancy is based on XOR-based erasure codes, which use only XOR operations for encoding and decoding. In addition to providing failure tolerance, a storage system must also provide fast failure...

    Provided By The Chinese University of Hong Kong

  • White Papers // Feb 2012

    A Panoramic View of 3G Data/Control-Plane Traffic: Mobile Device Perspective

    Users can access the Internet via 3G/4G cellular data networks using various types of user devices (e.g., smartphones, tablets, datacards). The authors conduct a detailed measurement study on the impact of different device types on the data/control-plane performance of a commercial, city-wide 3G cellular data network in China. They present...

    Provided By The Chinese University of Hong Kong

  • White Papers // Mar 2011

    Learning Equilibrium Play for Stochastic Parallel Gaussian Interference Channels

    Distributed power control for parallel Gaussian interference channels recently draws great interests. However, all existing works only studied this problem under deterministic communication channels and required certain perfect information to carry out their proposed algorithms. In this paper, the authors study this problem for stochastic parallel Gaussian interference channels. In...

    Provided By The Chinese University of Hong Kong

  • White Papers // May 2012

    Power Allocation for Multiuser Cooperative Communication Networks Under Relay Selection Degree Bounds

    This paper considers the joint power allocation and relay selection problem in multiuser cooperative communication networks, where one user can only seek a limited number of relays for cooperation. This relay selection degree bound is of practical significance. The goal is to optimize the relay selection and power allocation in...

    Provided By The Chinese University of Hong Kong

  • White Papers // Mar 2011

    Learning Equilibrium Play for Stochastic Parallel Gaussian Interference Channels

    Distributed power control for parallel Gaussian interference channels recently draws great interests. However, all existing works only studied this problem under deterministic communication channels and required certain perfect information to carry out their proposed algorithms. In this paper, the authors study this problem for stochastic parallel Gaussian interference channels. In...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    Analog Network Coding in General SNR Regime: Performance of a Greedy Scheme

    The problem of maximum rate achievable with analog network coding for a unicast communication over a layered relay network with directed links is considered. A relay node performing analog network coding scales and forwards the signals received at its input. Recently this problem has been considered under certain assumptions on...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    ADAM: An Automatic and Extensible Platform to Stress Test Android Anti-Virus Systems

    With the rising threat of smartphone malware, both academic community and commercial anti-virus companies proposed many methodologies and products to defend against smartphone malware. Thus, how to assess the effectiveness of these defense mechanisms against existing and unknown malware becomes important. The authors propose ADAM, an automated and extensible system...

    Provided By The Chinese University of Hong Kong

  • White Papers // Apr 2012

    A Cost-Based Heterogeneous Recovery Scheme for Distributed Storage Systems With RAID-6 Codes

    Modern distributed storage systems provide large-scale, fault-tolerant data storage. To reduce the probability of data unavailability, it is important to recover the lost data of any failed storage node efficiently. In practice, storage nodes are of heterogeneous types and have different transmission bandwidths. Thus, traditional recovery solutions that simply minimize...

    Provided By The Chinese University of Hong Kong

  • White Papers // Feb 2012

    A Panoramic View of 3G Data/Control-Plane Traffic: Mobile Device Perspective

    Users can access the Internet via 3G/4G cellular data networks using various types of user devices (e.g., smartphones, tablets, datacards). The authors conduct a detailed measurement study on the impact of different device types on the data/control-plane performance of a commercial, city-wide 3G cellular data network in China. They present...

    Provided By The Chinese University of Hong Kong

  • White Papers // Mar 2012

    On the Speedup of Single-Disk Failure Recovery in XOR-Coded Storage Systems: Theory and Practice

    Modern storage systems stripe redundant data across multiple disks to provide availability guarantees against disk failures. One form of data redundancy is based on XOR-based erasure codes, which use only XOR operations for encoding and decoding. In addition to providing failure tolerance, a storage system must also provide fast failure...

    Provided By The Chinese University of Hong Kong