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1. 发明申请

US20100007743A1 FRAME SYNCHRONIZATION AND STRUCTURE DETECTION METHOD IN DVB-S2 SYSTEM 失效
标题翻译： DVB-S2系统中的帧同步和结构检测方法
公开(公告)号：US20100007743A1
公开(公告)日：2010-01-14
申请号：US12518242
申请日：2007-10-31
申请人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Sangtae Kim , Seokheon Kang , Wonjin Sung
发明人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Sangtae Kim , Seokheon Kang , Wonjin Sung
IPC分类号： H04N17/00
CPC分类号： H04N21/4382 , H04H40/90 , H04L7/042 , H04L27/2656 , H04N7/20 , H04N21/238 , H04N21/2383 , H04N21/242 , H04N21/6143
摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system. The method for detecting frame sync and frame structure includes the steps of: calculating differential correlation values of reception symbols; generating index sequences of reception symbols whose differential correlation values calculated above exceed a threshold value; calculating positions estimated as frame start points which correspond to a total frame number based on the number of symbols per frame for each frame structure; and detecting frame sync and frame structure based on the umber of positions where the above-calculated frame start point estimated positions and the above-generated index sequences are matched.
摘要翻译：提供了一种用于在卫星广播系统中检测帧同步和帧结构的方法。用于检测帧同步和帧结构的方法包括以下步骤：计算接收符号的差分相关值; 产生上述计算出的差分相关值的接收符号的索引序列超过阈值; 基于每个帧结构的每个符号的数量，计算估计为与总帧数相对应的帧起始点的位置; 以及基于上述计算出的帧起始点估计位置和上述生成的索引序列匹配的位置的数量来检测帧同步和帧结构。

2. 发明授权

US08085818B2 Frame synchronization and structure detection method in DVB-S2 system 失效
标题翻译： DVB-S2系统中的帧同步和结构检测方法
公开(公告)号：US08085818B2
公开(公告)日：2011-12-27
申请号：US12518242
申请日：2007-10-31
申请人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Sangtae Kim , Seokheon Kang , Wonjin Sung
发明人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Sangtae Kim , Seokheon Kang , Wonjin Sung
IPC分类号： H04J3/06
CPC分类号： H04N21/4382 , H04H40/90 , H04L7/042 , H04L27/2656 , H04N7/20 , H04N21/238 , H04N21/2383 , H04N21/242 , H04N21/6143
摘要： Provided is a method for detecting frame sync and frame structure in a satellite broadcasting system. The method for detecting frame sync and frame structure includes the steps of: calculating differential correlation values of reception symbols; generating index sequences of reception symbols whose differential correlation values calculated above exceed a threshold value; calculating positions estimated as frame start points which correspond to a total frame number based on the number of symbols per frame for each frame structure; and detecting frame sync and frame structure based on the umber of positions where the above-calculated frame start point estimated positions and the above-generated index sequences are matched.
摘要翻译：提供了一种用于在卫星广播系统中检测帧同步和帧结构的方法。用于检测帧同步和帧结构的方法包括以下步骤：计算接收符号的差分相关值; 产生上述计算出的差分相关值的接收符号的索引序列超过阈值; 基于每个帧结构的每个符号的数量，计算估计为与总帧数相对应的帧起始点的位置; 以及基于上述计算出的帧起始点估计位置和上述生成的索引序列匹配的位置的数量来检测帧同步和帧结构。

3. 发明授权

US08422604B2 Method for detecting frame synchronization and structure in DVB-S2 system 失效
标题翻译： DVB-S2系统帧同步和结构检测方法
公开(公告)号：US08422604B2
公开(公告)日：2013-04-16
申请号：US12518103
申请日：2007-10-30
申请人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seokheon Kang , Deokchang Kang , Wonjin Sung
发明人： Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seokheon Kang , Deokchang Kang , Wonjin Sung
IPC分类号： H03D1/00
CPC分类号： H04L27/2656 , H04L7/042 , H04L27/2675
摘要： 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.
摘要翻译：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。

4. 发明授权

US07587653B2 Decoding method for detecting PLSC from frames of satellite broadcasting system 有权
标题翻译：用于从卫星广播系统的帧中检测PLSC的解码方法
公开(公告)号：US07587653B2
公开(公告)日：2009-09-08
申请号：US11442363
申请日：2006-05-26
申请人： Pan-Soo Kim , Dae-Ig Chang , In-Ki Lee , Tae-Hoon Kim , Deock-Gil Oh , Wonjin Sung , Seokheon Kang , Deokchang Kang
发明人： Pan-Soo Kim , Dae-Ig Chang , In-Ki Lee , Tae-Hoon Kim , Deock-Gil Oh , Wonjin Sung , Seokheon Kang , Deokchang Kang
IPC分类号： H03M13/05
CPC分类号： H04L1/0045 , H03M13/136 , H03M13/15 , H03M13/6561 , H04H40/90 , H04L1/0057 , H04L1/0072 , H04L1/08
摘要： Provided is a decoding method for detecting Physical Layer Signaling Codes (PLSCs) from frames of a satellite broadcasting system. The method includes: a) acquiring a summation vector and a subtraction vector from an inputted symbol vector; b) performing parallel Reed-Muller (32,6) decoding onto the summation and subtraction vectors based on a Hadamard matrix and estimating message bits of the summation and subtraction vectors; c) performing PLSC coding and modulation onto the message bits of the summation and subtraction vectors; d) calculating a first difference between symbols of the received symbol vector and the summation vector symbols, and a second difference between the symbols of the received symbol vector and the subtraction vector symbols; and e) when the first difference is smaller than the second difference, determining a Reed-Muller codeword is repeated, or when the first difference is larger than the second difference, determining that the Reed-Muller codeword is inverted.
摘要翻译：提供了一种从卫星广播系统的帧中检测物理层信令码（PLSC）的解码方法。该方法包括：a）从输入的符号向量获取求和向量和减法向量; b）基于Hadamard矩阵对求和和减法向量执行并行Reed-Muller（32,6）解码并估计求和和减法向量的消息比特; c）对求和和减法向量的消息比特执行PLSC编码和调制; d）计算接收的符号向量和求和向量符号的符号之间的第一差值，以及接收到的符号向量和减法向量符号的符号之间的第二差值; 以及e）当第一差小于第二差时，重复确定里德 - 穆勒码字，或者当第一差大于第二差时，确定里德 - 穆勒码字被反转。

5. 发明授权

US07308064B2 Frame synchronization method based on differential correlation information in satellite communication system 失效
标题翻译：基于卫星通信系统差分相关信息的帧同步方法
公开(公告)号：US07308064B2
公开(公告)日：2007-12-11
申请号：US11442447
申请日：2006-05-26
申请人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Wonjin Sung , Deokchang Kang , Seokheon Kang
发明人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Wonjin Sung , Deokchang Kang , Seokheon Kang
IPC分类号： H04L7/00
CPC分类号： H04J3/0608 , H04B7/2125
摘要： Provided is a frame synchronization method for synchronizing frames with pilot blocks added thereto based on differential correlation information in a satellite communication system. The method can acquire a highly reliable frame synchronization estimation value by achieving a multi-step threshold value test using pilot blocks after a correlation analysis and a threshold test based on a sync signal in order to resolve the problem of a low signal-to-noise ratio and a large frequency error and acquire highly reliable frame synchronization performance, and can overcome distortion of a correlation analysis value caused by the frequency error by analyzing correlation based on differential information. The method includes the steps of: a) performing correlation analysis and a threshold test by using a sync word; and b) performing a multi-step correlation value test by using the pilot blocks added to the frames prior to the sync word.
摘要翻译：提供了一种帧同步方法，用于基于卫星通信系统中的差分相关信息来将帧与其添加的导频块同步。该方法可以通过在相关分析和基于同步信号的阈值测试之后使用导频块实现多步阈值测试来获得高度可靠的帧同步估计值，以便解决低信噪比的问题比例大，频率误差大，获得高可靠性的帧同步性能，可以通过分析基于差分信息的相关性来克服由频率误差引起的相关分析值的失真。该方法包括以下步骤：a）通过使用同步字执行相关分析和阈值测试; 以及b）通过使用添加到同步字之前的帧的导频块来执行多步相关值测试。

6. 发明申请

US20070150796A1 Decoding method for detecting PLSC from frames of satellite broadcasting system 有权
标题翻译：用于从卫星广播系统的帧中检测PLSC的解码方法
公开(公告)号：US20070150796A1
公开(公告)日：2007-06-28
申请号：US11442363
申请日：2006-05-26
申请人： Pan-Soo Kim , Dae-Ig Chang , In-Ki Lee , Tae-Hoon Kim , Deock-Gil Oh , Wonjin Sung , Seokheon Kang , Deokchang Kang
发明人： Pan-Soo Kim , Dae-Ig Chang , In-Ki Lee , Tae-Hoon Kim , Deock-Gil Oh , Wonjin Sung , Seokheon Kang , Deokchang Kang
IPC分类号： H03M13/00
CPC分类号： H04L1/0045 , H03M13/136 , H03M13/15 , H03M13/6561 , H04H40/90 , H04L1/0057 , H04L1/0072 , H04L1/08
摘要： Provided is a decoding method for detecting Physical Layer Signaling Codes (PLSCs) from frames of a satellite broadcasting system. The method includes: a) acquiring a summation vector and a subtraction vector from an inputted symbol vector; b) performing parallel Reed-Muller (32,6) decoding onto the summation and subtraction vectors based on a Hadamard matrix and estimating message bits of the summation and subtraction vectors; c) performing PLSC coding and modulation onto the message bits of the summation and subtraction vectors; d) calculating a first difference between symbols of the received symbol vector and the summation vector symbols, and a second difference between the symbols of the received symbol vector and the subtraction vector symbols; and e) when the first difference is smaller than the second difference, determining a Reed-Muller codeword is repeated, or when the first difference is larger than the second difference, determining that the Reed-Muller codeword is inverted.
摘要翻译：提供了一种从卫星广播系统的帧中检测物理层信令码（PLSC）的解码方法。该方法包括：a）从输入的符号向量获取求和向量和减法向量; b）基于Hadamard矩阵对求和和减法向量执行并行Reed-Muller（32,6）解码并估计求和和减法向量的消息比特; c）对求和和减法向量的消息比特执行PLSC编码和调制; d）计算接收的符号向量和求和向量符号的符号之间的第一差值，以及接收到的符号向量和减法向量符号的符号之间的第二差值; 以及e）当第一差小于第二差时，重复确定里德 - 穆勒码字，或者当第一差大于第二差时，确定里德 - 穆勒码字被反转。

7. 发明申请

US20070133727A1 Frame synchronization method based on differential correlation information in satellite communication system 失效
公开(公告)号：US20070133727A1
公开(公告)日：2007-06-14
申请号：US11442447
申请日：2006-05-26
申请人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Wonjin Sung , Deokchang Kang , Seokheon Kang
发明人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Wonjin Sung , Deokchang Kang , Seokheon Kang
IPC分类号： H04L7/00 , H04B1/00 , H04J3/06
CPC分类号： H04J3/0608 , H04B7/2125
摘要： Provided is a frame synchronization method for synchronizing frames with pilot blocks added thereto based on differential correlation information in a satellite communication system. The method can acquire a highly reliable frame synchronization estimation value by achieving a multi-step threshold value test using pilot blocks after a correlation analysis and a threshold test based on a sync signal in order to resolve the problem of a low signal-to-noise ratio and a large frequency error and acquire highly reliable frame synchronization performance, and can overcome distortion of a correlation analysis value caused by the frequency error by analyzing correlation based on differential information. The method includes the steps of: a) performing correlation analysis and a threshold test by using a sync word; and b) performing a multi-step correlation value test by using the pilot blocks added to the frames prior to the sync word.

8. 发明授权

US07978732B2 Apparatus and method for deciding transmission format using variable frame length and decoding method using the same 失效
标题翻译：使用可变帧长决定传输格式的装置和方法及使用其的解码方法
公开(公告)号：US07978732B2
公开(公告)日：2011-07-12
申请号：US12094325
申请日：2006-12-11
申请人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Won-Jin Sung , Deok-Chang Kang , Seok-Heon Kang
发明人： Pan-Soo Kim , In-Ki Lee , Tae-Hoon Kim , Dae-Ig Chang , Deock-Gil Oh , Won-Jin Sung , Deok-Chang Kang , Seok-Heon Kang
IPC分类号： H04J3/16
CPC分类号： H04L1/0003 , H04L1/0007 , H04L1/0009 , H04L1/0038 , H04L2001/0093 , H04N21/2343 , H04N21/2383 , H04N21/2404 , H04N21/4382
摘要： Provided are an apparatus and method for deciding a transmission format using a variable frame length and a decoding method using the same. The apparatus for deciding the transmission format using the variable frame length includes: a frame synchronization acquiring unit for acquiring a frame synchronization of a received transmission frame; a correlation analyzing unit for performing a correlation analysis with respect to the transmission frame whose synchronization is acquired, considering frame lengths of respective frame structures; and a transmission frame structure deciding unit for deciding the structure of the received transmission frame using the analyzed correlation. Accordingly, a physical layer signaling code (PLSC) demodulation and decoding performance can be enhanced by determining the structure of the transmitted frame without carrying out a PLSC decoding in such a state that a frequency synchronization is not acquired.
摘要翻译：提供了一种使用可变帧长度来决定传输格式的装置和方法以及使用其的解码方法。用于使用可变帧长度确定传输格式的装置包括：帧同步获取单元，用于获取接收到的传输帧的帧同步; 相关分析单元，考虑相应帧结构的帧长度，执行相对于获取同步的传输帧的相关分析; 以及传输帧结构决定单元，用于使用所分析的相关来确定所接收的传输帧的结构。因此，通过在不获取频率同步的状态下确定发送帧的结构而不执行PLSC解码，可以增强物理层信令码（PLSC）解调和解码性能。

9. 发明授权

US07720182B2 Apparatus and method for correcting frequency offset in satellite digital video broadcasting system 有权
标题翻译：卫星数字视频广播系统频偏校正装置及方法
公开(公告)号：US07720182B2
公开(公告)日：2010-05-18
申请号：US11636243
申请日：2006-12-08
申请人： Tae-Hoon Kim , Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seong-Jun Lee
发明人： Tae-Hoon Kim , Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seong-Jun Lee
IPC分类号： H04L1/00
CPC分类号： H04B7/18523 , H04L27/2657 , H04L27/2672 , H04L27/2676
摘要： An apparatus and method for correcting a frequency offset in a satellite digital video broadcasting system includes a frequency response transformer for receiving a satellite digital video broadcasting signal and acquiring frequency responses divided into positive and negative frequency parts; a rotation/difference value calculation unit for selecting a frequency response inputted from the frequency response transformer and calculating a first value indicating a difference in area without rotation for the selected frequency response, and calculating a second value indicating a difference in area with rotation for the remaining frequency responses; a zero intersection point calculator for dividing an average slope of a straight line formed by the first and second values by the first value, and calculating a zero intersection point of an area difference value on the straight line; and a frequency offset estimator for correcting the zero intersection point to thereby estimate the frequency offset.
摘要翻译：一种用于校正卫星数字视频广播系统中的频率偏移的装置和方法包括：频率响应变换器，用于接收卫星数字视频广播信号并获取被分为正，负频率部分的频率响应; 旋转/差值计算单元，用于选择从频率响应变换器输入的频率响应，并计算指示所选择的频率响应的不旋转的面积差的第一值，并且计算表示针对所选择的频率响应的旋转区域的差异的第二值剩余频率响应; 零交叉点计算器，用于将由第一和第二值形成的直线的平均斜率除以第一值，并计算直线上面积差值的零交叉点; 以及用于校正零交叉点从而估计频率偏移的频率偏移估计器。

10. 发明申请

US20070133725A1 Apparatus and method for correcting frequency offset in satellite digital video broadcasting system 有权
标题翻译：卫星数字视频广播系统频偏校正装置及方法
公开(公告)号：US20070133725A1
公开(公告)日：2007-06-14
申请号：US11636243
申请日：2006-12-08
申请人： Tae-Hoon Kim , Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seong-Jun Lee
发明人： Tae-Hoon Kim , Pan-Soo Kim , Dae-Ig Chang , Deock-Gil Oh , Seong-Jun Lee
IPC分类号： H04N7/20 , H04L7/00
CPC分类号： H04B7/18523 , H04L27/2657 , H04L27/2672 , H04L27/2676
摘要： Provided are an apparatus and method for correcting a frequency offset in a satellite digital video broadcasting system. The apparatus includes: a frequency response transformer for receiving a satellite digital video broadcasting signal and acquiring a plurality of frequency responses divided into a positive frequency part and a negative frequency part; a rotation/difference value calculation unit for selecting one of the plurality of frequency responses inputted from the frequency response transformer and calculating a first area difference value indicating a difference in area between the positive frequency part and the negative frequency part without rotation for the selected frequency response, and calculating a second area difference value indicating a difference in area between the positive frequency component and the negative frequency component with rotation for the remaining frequency responses; a zero intersection point calculator for dividing an average slope of a straight line formed by the first area difference value and the second area difference value by the first area difference value, and calculating a zero intersection point of an area difference value on the straight line; and a frequency offset estimator for correcting the zero intersection point provided from the zero intersection point calculator to thereby estimate the frequency offset.
摘要翻译：提供了一种用于校正卫星数字视频广播系统中的频率偏移的装置和方法。该装置包括：频率响应变压器，用于接收卫星数字视频广播信号并获取分成正频率部分和负频率部分的多个频率响应; 旋转/差值计算单元，用于选择从频率响应变换器输入的多个频率响应中的一个频率响应，并且计算指示正频率部分和负频率部分之间的面积差的第一区域差值，而不是所选频率的旋转响应，并且计算指示所述正频率分量和所述负频率分量之间的区域的差异的第二面积差值，其中所述正频率分量和所述负频率分量之间的剩余频率响应的旋转; 零交叉点计算器，用于将由第一区域差值和第二区域差值形成的直线的平均斜率除以第一区域差值，并且计算直线上的区域差值的零交叉点; 以及频率偏移估计器，用于校正从零交叉点计算器提供的零交叉点，从而估计频率偏移。

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