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    • 64. 发明申请
    • Balanced Optical-Radiofrequency Phase Detector
    • 平衡光射频相位检测器
    • US20080024787A1
    • 2008-01-31
    • US11609195
    • 2006-12-11
    • Franz KaertnerJung-Won Kim
    • Franz KaertnerJung-Won Kim
    • G01C19/64
    • G01J9/02G01J9/04G04G7/00H01S3/1304H01S3/2383
    • A balanced optical-RF phase detector for the extraction of low-jitter radiofrequency (RF) signals from optical pulse trains is demonstrated. The extraction of the low-jitter radiofrequency signals is based on the precise phase detection by use of a differentially biased Sagnac-loop interferometer and synchronous detection. The phase-error signal from this balanced optical-RF phase detector, which is robust against drifts and photodetector nonlinearities, is used to regenerate low-jitter radiofrequency signals from optical pulse trains. Alternatively, the phase-error signal is used to generate a low-jitter optical pulse train, synchronized with a master radiofrequency signal or to synchronize multiple modelocked lasers with each other.
    • 证明了用于从光脉冲串提取低抖动射频(RF)信号的平衡光 - 射相位检测器。 低抖动射频信号的提取基于通过使用差分偏置的Sagnac环路干涉仪和同步检测的精确相位检测。 来自该平衡光 - RF相位检测器的相位误差信号对于漂移和光电检测器非线性都是鲁棒的,用于再生来自光脉冲串的低抖动射频信号。 或者,相位误差信号用于产生与主射频信号同步的低抖动光脉冲串,或者使多个锁模激光器彼此同步。
    • 65. 发明申请
    • Method for estimating a map size in a wireless mobile communication system
    • 用于估计无线移动通信系统中的地图大小的方法
    • US20070086474A1
    • 2007-04-19
    • US11580794
    • 2006-10-13
    • Hee-Kwang LeeJung-Won KimYoo-Seung Song
    • Hee-Kwang LeeJung-Won KimYoo-Seung Song
    • H04L12/413
    • H04W99/00H04L5/0044H04L5/006H04L5/0064H04W28/06H04W72/04H04W74/04
    • A method is provided for estimating the size of a MAP region according to data burst allocation in a wireless mobile communication system. A data burst region is divided into at least one sub-region. A downlink frame is constructed with at least one sub-region such that a power boosting process is performed according to a predefined power level. The data burst is allocated to a specific sub-region of the sub-region according to a carrier to interference and noise ratio (CINR) of the data burst. A slot occupancy rate of data bursts allocated to the specific sub-region is computed. A concatenation or non-concatenation of the data bursts is set according to a predetermined criterion when the slot occupancy rate is less than a predefined slot occupancy rate. A size of the MAP region to be occupied by allocation information of the data bursts to be concatenated or unconcatenated is set.
    • 提供了一种根据无线移动通信系统中的数据突发分配来估计MAP区域的大小的方法。 数据脉冲串区域被划分为至少一个子区域。 下行链路帧由至少一个子区域构成,使得根据预定功率电平执行功率提升处理。 数据脉冲串根据数据脉冲串的载波干扰和噪声比(CINR)分配给子区域的特定子区域。 计算分配给特定子区域的数据突发的时隙占用率。 当占用率小于预定的时隙占用率时,根据预定标准来设置数据突发的级联或非并置。 设置要被连接或不连接的数据突发的分配信息占用的MAP区域的大小。