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    채널 간섭 완화를 위한 위성 통신 송수신기
    1.
    发明公开
    채널 간섭 완화를 위한 위성 통신 송수신기 失效
    卫星通信发射机和接收机，用于减少通道干扰

    公开(公告)号：KR1020100052836A

    公开(公告)日：2010-05-20

    申请号：KR1020080111698

    申请日：2008-11-11

    Applicant: 한국전자통신연구원

    Inventor： 김판수 ,  장대익 ,  이호진 ,  알렉산드로바넬리코랄리 ,  지오반니엠마코라쟈 ,  클라우디팔레스티니 ,  라파엘라페도네 ,  빌란티마르코

    IPC: H04B7/185 ,  H04B7/005

    CPC classification number: H04B7/18513 ,  H04B1/7077 ,  H04B1/7093 ,  H04B2201/70715

    Abstract: PURPOSE: A satellite communication transceiver for mitigating interference is provided to improve performance in mobile body Doppler environment and non-linear amplification module by applying a band spreading technology based on direct sequence to a DVB-S2(Digital Video Broadcasting-via Satellite second generation) system. CONSTITUTION: A modulator(100) modulates a satellite communication signal. A band spreading unit(110) transmits the signal to outside after band spreading. The band spreading unit includes a matching filter unit(120), a decimation unit(130) and a direct sequence band spreading unit(140). The direct sequence band spreading unit includes a band spreading code applier(150), a scrambling unit(160), a oversampling unit(170) and a pulse forming unit(180).

    Abstract translation: 目的：提供用于减轻干扰的卫星通信收发器，以通过将基于直接序列的频带扩展技术应用于DVB-S2（数字视频广播卫星第二代）来提高移动体多普勒环境和非线性放大模块的性能， 系统。 构成：调制器（100）调制卫星通信信号。 频带扩展单元（110）在频带扩展之后将信号发送到外部。 频带扩展单元包括匹配滤波器单元（120），抽取单元（130）和直接序列频带扩展单元（140）。 直接序列频带扩展单元包括频带扩展码施加器（150），加扰单元（160），过采样单元（170）和脉冲形成单元（180）。

    ＤＶＢ 전송 시스템에서 위상 차등정보를 이용한 프레임동기 장치 및 그 방법
    2.
    发明授权
    ＤＶＢ 전송 시스템에서 위상 차등정보를 이용한 프레임동기 장치 및 그 방법 有权
    在DVB传输系统中使用相位差分信息进行帧同步的装置和方法

    公开(公告)号：KR100763598B1

    公开(公告)日：2007-10-05

    申请号：KR1020060096273

    申请日：2006-09-29

    Applicant: 한국전자통신연구원

    Inventor： 김판수 ,  김태훈 ,  이인기 ,  장대익 ,  오덕길 ,  지오반니엠마누엘코라짜 ,  라파엘라페도네 ,  마르코빌란티

    IPC: H04L7/00 ,  H04N7/015

    CPC classification number: H04L7/042 ,  H04L27/2656 ,  H04L27/2675

    Abstract: An apparatus and a method of frame synchronization using phase differential information in a DVB(Digital Video Broadcasting) transmission system are provided to improve the reliability of frame synchronization estimation by performing hard combining for pilot symbol streams in a hot start state. An apparatus of frame synchronization using phase differential information in a DVB transmission system includes a cold start detector(21), a first comparing unit(22), and an acquisition controlling unit(23). The cold start detector(21) calculates a correlation value(a first decision variable) for a received symbol data stream by using the phase differential information with all SOF(Start of Frame) symbol streams for frame synchronization in one SOF symbol period. The first comparing unit(22) compares the first decision variable with a first threshold value. The acquisition controlling unit(23) determines whether the initial frame synchronization is performed, and controls the cold start detector(21) to operate until the initial frame synchronization is performed.

    Abstract translation: 提供了一种在DVB（数字视频广播）传输系统中使用相位差信息的帧同步的装置和方法，以通过在热启动状态下对导频符号流执行硬组合来提高帧同步估计的可靠性。 在DVB传输系统中使用相位差信息的帧同步装置包括冷启动检测器（21），第一比较单元（22）和采集控制单元（23）。 冷启动检测器（21）通过在一个SOF符号周期中使用具有用于帧同步的所有SOF（起始帧）符号流的相位差信息来计算接收符号数据流的相关值（第一判定变量）。 第一比较单元（22）将第一判定变量与第一阈值进行比较。 获取控制单元（23）确定是否执行初始帧同步，并且控制冷启动检测器（21）运行直到执行初始帧同步。

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