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    Communication apparatus for continuous phase modulation signal
    1.
    发明授权
    Communication apparatus for continuous phase modulation signal 有权
    用于连续相位调制信号的通信装置

    公开(公告)号：US08731032B2

    公开(公告)日：2014-05-20

    申请号：US13270763

    申请日：2011-10-11

    Applicant: Pan-Soo Kim ,  Yong-Ho Lee ,  Deock-Gil Oh ,  Xavier Giraud

    Inventor： Pan-Soo Kim ,  Yong-Ho Lee ,  Deock-Gil Oh ,  Xavier Giraud

    IPC: H04B1/38 ,  H03D3/00 ,  G01S7/40

    CPC classification number: H04L27/2003 ,  H04L27/227 ,  H04L2027/0067

    Abstract: A communication apparatus for a continuous phase modulation signal. The communication apparatus includes a first processing unit configured to generate first information of the continuous phase modulation signal using first symbol data; a symbol converting unit configured to convert the first symbol data into second symbol data or convert the second symbol data into the first symbol data; a symbol storage unit configured to store the second symbol data; a second processing unit configured to second information of the continuous phase modulation signal using the second symbol data stored in the symbol storage unit; a third processing unit configured to generate third information of the continuous phase modulation signal using a modulo operation of an integer related to a modulation index; and an output unit configured to add an output from the third processing unit and an output from the first processing unit and generate the continuous phase modulation signal.

    Abstract translation: 一种用于连续相位调制信号的通信装置。 通信装置包括：第一处理单元，被配置为使用第一符号数据生成连续相位调制信号的第一信息; 符号转换单元，被配置为将第一符号数据转换为第二符号数据或将第二符号数据转换为第一符号数据; 符号存储单元，被配置为存储所述第二符号数据; 第二处理单元，被配置为使用存储在符号存储单元中的第二符号数据来对连续相位调制信号进行第二信息; 第三处理单元，被配置为使用与调制指数相关的整数的模运算来生成连续相位调制信号的第三信息; 以及输出单元，被配置为将来自第三处理单元的输出和来自第一处理单元的输出相加，并产生连续相位调制信号。

    Apparatus and method for acquiring frame synchronization and frequency synchronization simultaneously in communication system
    2.
    发明授权
    Apparatus and method for acquiring frame synchronization and frequency synchronization simultaneously in communication system 失效
    在通信系统中同时获取帧同步和频率同步的装置和方法

    公开(公告)号：US08259646B2

    公开(公告)日：2012-09-04

    申请号：US12517432

    申请日：2007-12-03

    Applicant: Pan-Soo Kim ,  Dae-Ig Jang ,  Deock-Gil Oh ,  Ho-Jin Lee

    Inventor： Pan-Soo Kim ,  Dae-Ig Jang ,  Deock-Gil Oh ,  Ho-Jin Lee

    IPC: H04J3/06

    CPC classification number: H04L7/042 ,  H04L7/046 ,  H04L27/0014 ,  H04L2027/003

    Abstract: An apparatus and method for acquiring reliable frame synchronization performance and frequency synchronization simultaneously in a communication system includes a differential correlator outputting a result value obtained by performing a differential operation based on an input signal having symbol timing synchronization and a value pre-defined with a sender sending the input signal, a frequency error calculator compensating for a frequency error based on the result value of the differential correlator and a frequency compensation control signal, and a frame synchronization determiner outputting the frequency compensation control signal if the result value of the differential correlator is greater than a threshold set having at least one value. By introducing a correlation scheme, i.e. Differential Generalized Post Detection Integration (DGPDI), in which differential information corresponding to a half of a symbol duration length is used within a duration from a frame start symbol to a UW symbol duration in a TDM/TDMA transmission structure in which a low SNR and a high frequency error must be considered, a more reliable frame synchronization estimation value can be acquired in comparison to a conventional frame synchronization scheme in which differential information between single neighbor symbols is used.

    Abstract translation: 一种用于在通信系统中同时获取可靠的帧同步性能和频率同步的装置和方法包括差分相关器，其输出通过基于具有符号定时同步的输入信号执行差分运算而得到的结果值，以及预定义的发送器 发送输入信号，基于差分相关器的结果值和频率补偿控制信号来补偿频率误差的频率误差计算器，以及如果差分相关器的结果值为 大于具有至少一个值的阈值集合。 通过引入相关方案，即差分广义后检测积分（DGPDI），其中对应于符号持续时间长度的一半的差分信息在TDM / TDMA传输中的帧开始符号到UW符号持续时间的持续时间内被使用 必须考虑低SNR和高频误差的结构，与使用单个相邻符号之间的差分信息的常规帧同步方案相比，可以获得更可靠的帧同步估计值。

    APPARATUS AND METHOD FOR FRAME SYNCHRONIZATION IN SATELLITE COMMUNICATION SYSTEM
    3.
    发明申请
    APPARATUS AND METHOD FOR FRAME SYNCHRONIZATION IN SATELLITE COMMUNICATION SYSTEM 有权
    卫星通信系统中帧同步的装置和方法

    公开(公告)号：US20120163423A1

    公开(公告)日：2012-06-28

    申请号：US13324351

    申请日：2011-12-13

    Applicant: Vikas AGARWAL ,  Pan-Soo KIM ,  Deock-Gil OH

    Inventor： Vikas AGARWAL ,  Pan-Soo KIM ,  Deock-Gil OH

    IPC: H04W56/00 ,  H04B7/185

    CPC classification number: H04H40/90

    Abstract: Provided is a frame synchronization apparatus capable of reducing the amount of total computation and computation delays when a receiver of a satellite communication system calculates correlation between an input signal for frame synchronization and a signal sequence of the receiver, since the receiver uses no multiplier. The frame synchronization apparatus includes a correlator to obtain a correlation vale of a unique word of a receiver with respect to a symbol data stream of a frame received from a transmitter of the satellite communication system, a comparator to compare the correlation value to a predetermined threshold value, and a determiner to determine whether the frame has been synchronized, based on the result of the comparison by the comparator.

    Abstract translation: 提供了一种帧同步装置，当卫星通信系统的接收机计算用于帧同步的输入信号与接收机的信号序列之间的相关性时，能够减少总计算量和计算延迟量，因为接收机不使用乘法器。 帧同步装置包括相关器，用于相对于从卫星通信系统的发射机接收的帧的符号数据流获得接收机的唯一字的相关值;将相关值与预定阈值进行比较的比较器 值，以及基于比较器的比较结果来确定帧是否已被同步的确定器。

    METHOD FOR DETECTING FRAME SYNCHRONIZATION AND STRUCTURE IN DVB-S2 SYSTEM
    6.
    发明申请
    METHOD FOR DETECTING FRAME SYNCHRONIZATION AND STRUCTURE IN DVB-S2 SYSTEM 失效
    检测DVB-S2系统中帧同步和结构的方法

    公开(公告)号：US20100322366A1

    公开(公告)日：2010-12-23

    申请号：US12518103

    申请日：2007-10-30

    Applicant: Pan-Soo Kim ,  Dae-lg Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

    Inventor： Pan-Soo Kim ,  Dae-lg Chang ,  Deock-Gil Oh ,  Seokheon Kang ,  Deokchang Kang ,  Wonjin Sung

    IPC: H04L7/04

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

    Abstract: Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system, which acquires an estimated value for detecting frame structure and frame sync and overcomes distortion of correlation analysis values by summing differential correlation values for SOF positions in consideration of the variable frame length, and selecting a maximum value in a channel environment with low signal-to-noise ratio and high frequency error. SOF is a sync word indicating the start point of a frame. The method includes the steps of: acquiring SOF differential correlation value sequences; acquiring sums (di,t) of the correlation values normalized for SOF positions based on the number of symbols per frame by using the above-generated SOF differential correlation value sequences; and selecting a maximum value (dz,x) among the sums of correlation values, detecting z as a frame sync position, and detecting x as a frame structure index.

    Abstract translation: 提供了一种用于检测卫星广播系统中的帧同步和帧结构的方法，其获取用于检测帧结构和帧同步的估计值，并通过将SOF位置的差分相关值相加考虑到可变帧来克服相关分析值的失真 长度，并在低信噪比和高频误差的信道环境中选择最大值。 SOF是指示帧起始点的同步字。 该方法包括以下步骤：获取SOF差分相关值序列; 通过使用上述生成的SOF差分相关值序列，基于每帧的符号数，获取针对SOF位置归一化的相关值的和（di，t） 并且选择相关值之和中的最大值（dz，x），检测z作为帧同步位置，并且检测x作为帧结构索引。

    SIGNAL DEMODULATION METHOD BASED ON DVB-S2
    8.
    发明申请
    SIGNAL DEMODULATION METHOD BASED ON DVB-S2 审中-公开
    基于DVB-S2的信号解调方法

    公开(公告)号：US20100128821A1

    公开(公告)日：2010-05-27

    申请号：US12506515

    申请日：2009-07-21

    Applicant: Pan-soo Kim ,  Dae-ig Chang

    Inventor： Pan-soo Kim ,  Dae-ig Chang

    IPC: H04L27/06

    CPC classification number: H04L27/2655 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662

    Abstract: A satellite broadcasting frame signal demodulation method is disclosed. A demodulation method of a demodulator that demodulates a Digital Video Broadcasting-Satellite—Second Generation (DVB-S2) standard satellite broadcasting frame signal includes: performing symbol synchronization; performing frame synchronization after symbol synchronization; recovering a carrier wave after frame synchronization; and decoding mode code (MODCOD) information to obtain frame configuration information after recovering the carrier wave. This method ensures rapid demodulation and reliable demodulated data.

    Abstract translation: 公开了一种卫星广播帧信号解调方法。 解调数字视频广播卫星 - 第二代（DVB-S2）标准卫星广播帧信号的解调器的解调方法包括：执行符号同步; 符号同步后执行帧同步; 帧同步后恢复载波; 和解码模式码（MODCOD）信息，以在恢复载波之后获得帧配置信息。 该方法确保快速解调和可靠的解调数据。

    METHOD AND SYSTEM FOR EFFECTIVE ADAPTIVE CODING AND MODULATION IN SATELLITE COMMUNICATION SYSTEM
    9.
    发明申请
    METHOD AND SYSTEM FOR EFFECTIVE ADAPTIVE CODING AND MODULATION IN SATELLITE COMMUNICATION SYSTEM 失效
    卫星通信系统中有效的自适应编码和调制方法与系统

    公开(公告)号：US20100046415A1

    公开(公告)日：2010-02-25

    申请号：US12516258

    申请日：2007-11-29

    Applicant: Tae Hoon Kim ,  Pan Soo Kim ,  Min Su Shin ,  Dae Ig Chang

    Inventor： Tae Hoon Kim ,  Pan Soo Kim ,  Min Su Shin ,  Dae Ig Chang

    IPC: H04J3/22 ,  H04B7/14 ,  H03M13/05 ,  G06F11/10

    CPC classification number: H04L1/0009 ,  H03M13/09 ,  H03M13/2714 ,  H03M13/2957 ,  H03M13/353 ,  H03M13/6356 ,  H03M13/6362 ,  H04L1/0003 ,  H04L1/0066

    Abstract: A Second Generation Digital Video Broadcasting via Satellite (DVB-S2) system is provided. More particularly, a method and apparatus for maintaining synchronization of a signal by changing an Adaptive Coding and Modulation (ACM) method that is used for a conventional DVB-S2 system are provided. In the apparatus and method, an FEC frame of a variable length is formed by turbo encoding rather than Bose-Chaudhuri-Hocquenghem (BCH) and Low Density Parity Check (LDPC) encoding, and a Physical Layer (PL) frame of a specific length is formed regardless of a modulation method, so that a satellite terminal receives a signal transmitted at a specific length regardless of a modulation method or a coding rate to easily maintain synchronization without interruption and efficiently transmit the signal.

    Abstract translation: 提供了通过卫星（DVB-S2）系统的第二代数字视频广播。 更具体地，提供了一种用于通过改变用于常规DVB-S2系统的自适应编码和调制（ACM）方法来维持信号同步的方法和装置。 在该装置和方法中，通过turbo编码而不是Bose-Chaudhuri-Hocquenghem（BCH）和低密度奇偶校验（LDPC）编码以及特定长度的物理层（PL）帧来形成可变长度的FEC帧 无论调制方式如何，卫星终端接收不同调制方式或编码率的特定长度发送的信号，以便不间断地容易地保持同步，并有效地发送信号。

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