MOBILE SPEED AND DOPPLER FREQUENCY ESTIMATION USING CYCLOSTATIONARITY
    77.
    发明公开
    MOBILE SPEED AND DOPPLER FREQUENCY ESTIMATION USING CYCLOSTATIONARITY 审中-公开
    移动速度和多普勒频率估计的循环平稳性

    公开(公告)号:EP2089990A2

    公开(公告)日:2009-08-19

    申请号:EP07845132.5

    申请日:2007-11-21

    发明人: ZHANG, Hong ABDI, Ali

    IPC分类号: H04B7/01

    CPC分类号: H04B7/01

    摘要: Embodiments of the invention exploit cyclostationarity of linearly modulated signals, transmitted through fading channels, to provide robust blind and data-aided mobile speed estimators. Embodiments of the invention utilize at least two methods of cyclic-correlation- and cyclic-spectrum-based methods and extension to space-time speed estimation at the base station in macrocells. In comparison with background art methods, the new estimators of the embodiments of the invention can be used without any need for pilot tones, and are robust to additive stationary noise or interference of any color or distribution. In addition, embodiments of the invention can also be implemented blindly, which can increase the data throughput. Performance results of the estimators of the embodiments of the invention are illustrated via extensive Monte Carlo simulation results.

    摘要翻译: 本发明的实施例利用通过衰落信道传输的线性调制信号的循环平稳性,以提供鲁棒的盲和数据辅助的移动速度估计器。 本发明的实施例利用基于循环相关和循环频谱的方法中的至少两种方法和对宏小区中的基站处的空间 - 时间速度估计的扩展。 与背景技术方法相比,可以使用本发明实施例的新估计器而不需要任何导频音,并且对于附加的固定噪声或任何颜色或分布的干扰是稳健的。 另外,本发明的实施例也可以盲目地实现,这可以增加数据吞吐量。 通过广泛的蒙特卡洛模拟结果来说明本发明的实施例的估计器的性能结果。

    AUTONOMOUS SYSTEM-BASED EDGE MARKING (ASEM) FOR INTERNET PROTOCOL (IP) TRACEBACK
    78.
    发明公开
    AUTONOMOUS SYSTEM-BASED EDGE MARKING (ASEM) FOR INTERNET PROTOCOL (IP) TRACEBACK 审中-公开
    自治系统基于边缘的打标(ASEM)于跟踪互联网协议(IP)

    公开(公告)号:EP1989839A2

    公开(公告)日:2008-11-12

    申请号:EP07863323.7

    申请日:2007-03-01

    IPC分类号: H04L12/28

    摘要: Embodiments are directed to an Autonomous System-based Edge Marking (ASEM) for Internet Protocol (IP) traceback. In particular, the embodiments are a system and a method for IP traceback that receives one or more packets at routers; inscribes packets only at marking routers with autonomous system (AS) level and marking information; and forwards the marked packets to edge routers and other routers for verification. Additionally the packets are marked based on a probability measure and Border Gateway Protocol (BGP) routing table information is the AS level information used for marking and verification.