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6 Result(s)

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  1. No Access

    Article

    Joint sensing time and power allocation in cognitive networks with amplify-and-forward cooperation

    Cognitive radio is a novel approach to cope with spectrum scarcity, in which either a network or a wireless node changes its transmission or reception parameters to communicate efficiently. However, it is diff...

    Shunling Ruan, Chengshi Zhao, Song Jiang, Kyungsup Kwak in Annals of Telecommunications (2018)

  2. No Access

    Article

    Mutual interference considered power allocation in OFDM-based cognitive networks: the multiple SUs case

    Power allocation for secondary users (SUs) in cognitive networks is an important issue to ensure the SUs’ quality of service. When the mutual interference between the primary users (PUs) and the SUs is taken i...

    Chengshi Zhao, Mingrui Zou, Kyungsup Kwak in annals of telecommunications - annales des… (2010)

  3. No Access

    Article

    Fair exchange signature schemes

    In this paper a new class of fair exchange signature scheme (FESS) is proposed that allows two players to exchange digital signatures in a fair way. The new signature scheme is a general model and has various ...

    **gWei Liu, Rong Sun, KyungSup Kwak in Science China Information Sciences (2010)

  4. No Access

    Article

    Comprehensive Capacity Ensured Distributed Binary Power Allocation in Dense Cognitive Networks

    Considering the capacity gain of the secondary system and the capacity loss of the primary system caused by the newly accessing user, a distributed binary power allocation (admittance criterion) is proposed in...

    Chengshi Zhao, Kyungsup Kwak in Journal of Network and Systems Management (2010)

  5. No Access

    Chapter and Conference Paper

    Flexible ZCD-UWB with High QoS or High Capacity Using Variable ZCD Factor Code Sets

    In this paper, we propose a Variable ZCD(Zero Correlation Duration) Factor Code Sets. Additionaly, Flexible ZCD-UWB(Ultra Wide Band) with High QoS or High Capacity using Variable ZCD Factor Code Sets are prese...

    Jaesang Cha, Kyungsup Kwak, Changdae Yoon… in Computational Science and Its Applications… (2005)

  6. No Access

    Chapter and Conference Paper

    Interference-Free ZCD-UWB for Wireless Home Network Applications

    Interference-free ZCD-UWB for Wireless Home Network Applications(WHNA) are presented in this paper. Interference-free ZCD-UWB could be a very useful solution for an enhanced wireless home network applications ...

    Jaesang Cha, Kyungsup Kwak, Sangyule Choi… in Computational Science and Its Applications… (2005)