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    • 33. 发明申请
    • Blind modulation classification apparatus for use in satellite communication system and method thereof
    • 用于卫星通信系统的盲调制分类装置及其方法
    • US20060115013A1
    • 2006-06-01
    • US11184592
    • 2005-07-19
    • Il KimHo-Kyom KimDeock-Gil OhHo-Jin Lee
    • Il KimHo-Kyom KimDeock-Gil OhHo-Jin Lee
    • H04L23/02
    • H04L27/0012
    • A blind modulation classification apparatus in a satellite communication system improves performance in non-ideal communication environment having frequency error and phase error, by reducing computational burden of test statistic and possibility of numerical error of hardware, with computation of likelihood for each stage independently. The blind modulation classification apparatus includes a plurality of likelihood computing units, each for computing a likelihood value of a received baseband signal for corresponding one of a plurality of modulation schemes; a maximum selecting and setting units for selecting the maximum among the calculated likelihood values and setting a flag corresponding to the maximum to ‘1’ and the other flags to ‘0’; a plurality of flag summing-up units for summing up the flags of the plurality of the modulation schemes; and a modulation scheme selecting unit for selecting the maximum among the summed-up values and selecting the modulation scheme corresponding to the selected value.
    • 卫星通信系统中的盲调制分类装置通过减少测试统计量的计算负担和硬件的数值误差的可能性,通过独立地计算每个阶段的可能性来提高具有频率误差和相位误差的非理想通信环境中的性能。 盲调制分类装置包括多个似然度计算单元,每个似然运算单元用于计算多个调制方案中的相应一个的接收基带信号的似然值; 最大选择和设置单位,用于在所计算的似然值中选择最大值,并将与最大值相对应的标志设置为“1”,将其他标志设置为“0”; 多个标记求和单元,用于对多个调制方案的标志进行相加; 以及调制方式选择单元,用于选择累加值中的最大值,并选择与所选值对应的调制方案。
    • 34. 发明申请
    • Hybrid type satellite simulation system and method thereof
    • 混合型卫星仿真系统及其方法
    • US20060100846A1
    • 2006-05-11
    • US11182133
    • 2005-07-14
    • Sang-Uk LeeJae-Hoon KimHo-Jin LeeSeong-Pal Lee
    • Sang-Uk LeeJae-Hoon KimHo-Jin LeeSeong-Pal Lee
    • G06F9/45
    • B64G7/00B64G1/24H04L67/38
    • A hybrid-type satellite simulation system and a method thereof are disclosed. The system includes: a satellite modeling unit including a satellite model and a software model having flight dynamics and space environment data; a satellite operation unit for generating a telecommand, transmitting the telecommand to the satellite simulation system, receiving simulation result as a telemetry, analyzing the simulation result and displaying the analyzed result; a simulator kernel for managing and controlling the satellite simulation system; a TCP/IP interface processing unit for performing an interface function of TCP/IP level between the simulator kernel and a satellite onboard computer; an onboard computer interface processing unit for performing an interface function between the satellite onboard computer and the TCP/IP interface processing unit; and a satellite onboard computer including flight software for controlling a satellite.
    • 公开了一种混合型卫星仿真系统及其方法。 该系统包括:包括卫星模型和具有飞行动力学和空间环境数据的软件模型的卫星建模单元; 用于产生遥控的卫星操作单元,向卫星仿真系统发送遥控信号,接收模拟结果作为遥测,分析仿真结果并显示分析结果; 用于管理和控制卫星仿真系统的模拟器内核; TCP / IP接口处理单元,用于在模拟器内核和机载计算机之间执行TCP / IP级别的接口功能; 车载计算机接口处理单元,用于在卫星机载计算机和TCP / IP接口处理单元之间执行接口功能; 以及包含用于控制卫星的飞行软件的卫星机载计算机。
    • 38. 发明授权
    • Apparatus and method for providing contents push service, and mobile terminal and operation method thereof
    • 提供内容推送服务的装置和方法及其移动终端及其操作方法
    • US08433293B2
    • 2013-04-30
    • US12447886
    • 2007-11-08
    • Ho-Jin Lee
    • Ho-Jin Lee
    • H04L12/58
    • H04L67/26H04L67/04H04L69/16H04L69/162H04L69/164
    • The present invention relates to an apparatus and method of providing a content push service, a mobile terminal, and a method of operating a mobile terminal. According to an exemplary embodiment of the present invention, a user datagram protocol (UDP) port is set between the mobile terminal and a content push service providing server. In addition, the mobile terminal drives an application that receives the content push service through the set user datagram protocol (UDP) port, by the request of the content push service providing server. The mobile terminal receives the content push service from the content push service providing server through the driven application. Accordingly, it is not necessary to select a specific identifier for each of existing applications and recognize a specific identifier for each node of the mobile communication network.
    • 本发明涉及提供内容推送服务,移动终端和操作移动终端的方法的装置和方法。 根据本发明的示例性实施例,在移动终端和内容推送服务提供服务器之间设置用户数据报协议(UDP)端口。 此外,通过内容推送服务提供服务器的请求,移动终端通过设置的用户数据报协议(UDP)端口来驱动接收内容推送服务的应用。 移动终端通过驱动应用从内容推送服务提供服务器接收内容推送服务。 因此,不需要为每个现有应用选择特定的标识符并且识别移动通信网络的每个节点的特定标识符。
    • 40. 发明授权
    • Device for tracking polarization
    • 用于跟踪极化的装置
    • US08289208B2
    • 2012-10-16
    • US12664053
    • 2008-05-08
    • Bon-Jun KuDo-Seob AhnHo-Jin Lee
    • Bon-Jun KuDo-Seob AhnHo-Jin Lee
    • H04B7/185H04B1/00
    • H04B7/10
    • Provided is a device for tracking polarizations. A receiving polarization tracking device includes a feeder for finding vertical and horizontal vector components by receiving vertical and horizontal polarizations, a polarization estimator for estimating distortion of polarizations using the vertical and horizontal vector components outputted from the feeder, a polarization controller for controlling amplitudes and phases of vertical and horizontal polarizations based on information about the estimated distortion from the polarization estimator and an output signal from the receiving polarization tracking device, and a combiner for combining the vertical and horizontal polarizations controlled from the polarization controller.
    • 提供了用于跟踪偏振的装置。 接收偏振跟踪装置包括:通过接收垂直和水平偏振来发现垂直和水平矢量分量的馈线,用于使用从馈线输出的垂直和水平矢量分量估计极化失真的偏振估计器,用于控制幅度和相位的偏振控制器 基于关于来自极化估计器的估计失真的信息和来自接收偏振跟踪装置的输出信号的垂直和水平偏振的组合器,以及用于组合从偏振控制器控制的垂直和水平极化的组合器。