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1. 发明申请

US20110047199A1 CORRELATION APPARATUS AND METHOD FOR ACQUIRING ROBUST SYNCHRONIZATION 审中-公开
标题翻译：相关设备和获得稳健同步的方法
公开(公告)号：US20110047199A1
公开(公告)日：2011-02-24
申请号：US12507012
申请日：2009-07-21
申请人： Pansoo Kim , Dae Ig Chang , Wonjin Sung , Sangtae Kim , Dong-Uk Lee
发明人： Pansoo Kim , Dae Ig Chang , Wonjin Sung , Sangtae Kim , Dong-Uk Lee
IPC分类号： G06F17/15
CPC分类号： H04L27/2656 , H04L7/042 , H04L27/2676
摘要： Provided is a correlation apparatus and method for acquiring a robust synchronization. The correlation method may include: calculating a received symbol phase difference with respect to a received symbol; calculating a correlation SoF symbol phase difference with respect to a correlation SoF symbol for a correlation; calculating a differential correlation value of the received symbol using the received symbol phase difference and the correlation SoF symbol phase difference; calculating a Euclidean distance value of the received symbol using the received symbol phase difference; and calculating a sum correlation value of the received symbol using the differential correlation value and the Euclidean distance value.
摘要翻译：提供了一种用于获取鲁棒同步的相关装置和方法。相关方法可以包括：相对于接收到的符号计算接收到的符号相位差; 相对于相关的SoF符号计算相关SoF符号相位差; 使用接收到的符号相位差和相关SoF符号相位差来计算接收符号的差分相关值; 使用所接收的符号相位差计算所述接收符号的欧几里得距离值; 以及使用所述微分相关值和所述欧几里得距离值来计算所述接收符号的和相关值。

2. 发明申请

US20090154609A1 APPARATUS AND METHOD FOR SELECTING CORRELATION SCHEME BASED ON CARRIER FREQUENCY ERROR 有权
标题翻译：基于载波频率选择相关方案的装置和方法
公开(公告)号：US20090154609A1
公开(公告)日：2009-06-18
申请号：US12182447
申请日：2008-07-30
申请人： Pansoo KIM , Dae-Ig Chang , In-Ki Lee , Sangtae Kim , Wonjin Sung
发明人： Pansoo KIM , Dae-Ig Chang , In-Ki Lee , Sangtae Kim , Wonjin Sung
IPC分类号： H04L27/06
CPC分类号： H04L27/2657 , H04L7/042 , H04L27/2656 , H04L27/2675
摘要： Provided is a correlation scheme selecting apparatus and method that can acquire initial synchronization efficiently by calculating frequency error criterion threshold between correlation schemes and selecting a correlation scheme for each region when a correlation value is calculated for initial sync in a communication system with carrier frequency errors. The method for selecting a correlation scheme based on a carrier frequency error includes: calculating mis-detection probability values based on a normalized frequency offset for each correlation scheme; determining as a frequency-error criterion threshold a crossing point of graphs of the calculated mis-detection probability values for each correlation scheme; and selecting a correlation scheme based on the determined frequency-error criterion threshold.
摘要翻译：提供了一种相关方案选择装置和方法，其可以通过计算相关方案之间的频率误差标准阈值并且在具有载波频率误差的通信系统中为初始同步计算相关值时选择每个区域的相关方案来有效地获取初始同步。基于载波频率误差选择相关方案的方法包括：基于每个相关方案的归一化频率偏移来计算误检测概率值; 将每个相关方案的计算的错误检测概率值的曲线图的交叉点确定为频率 - 误差标准阈值; 以及基于所确定的频率 - 误差准则阈值来选择相关方案。

3. 发明授权

US08139691B2 Apparatus and method for selecting correlation scheme based on carrier frequency error 有权
标题翻译：基于载波频率误差选择相关方案的装置和方法
公开(公告)号：US08139691B2
公开(公告)日：2012-03-20
申请号：US12182447
申请日：2008-07-30
申请人： Pansoo Kim , Dae-Ig Chang , In-Ki Lee , Sangtae Kim , Wonjin Sung
发明人： Pansoo Kim , Dae-Ig Chang , In-Ki Lee , Sangtae Kim , Wonjin Sung
IPC分类号： H03D1/00
CPC分类号： H04L27/2657 , H04L7/042 , H04L27/2656 , H04L27/2675
摘要： Provided is a correlation scheme selecting apparatus and method that can acquire initial synchronization efficiently by calculating frequency error criterion threshold between correlation schemes and selecting a correlation scheme for each region when a correlation value is calculated for initial sync in a communication system with carrier frequency errors. The method for selecting a correlation scheme based on a carrier frequency error includes: calculating mis-detection probability values based on a normalized frequency offset for each correlation scheme; determining as a frequency-error criterion threshold a crossing point of graphs of the calculated mis-detection probability values for each correlation scheme; and selecting a correlation scheme based on the determined frequency-error criterion threshold.
摘要翻译：提供了一种相关方案选择装置和方法，其可以通过计算相关方案之间的频率误差标准阈值并且在具有载波频率误差的通信系统中为初始同步计算相关值时选择每个区域的相关方案来有效地获取初始同步。基于载波频率误差选择相关方案的方法包括：基于每个相关方案的归一化频率偏移来计算误检测概率值; 将每个相关方案的计算的错误检测概率值的曲线图的交叉点确定为频率 - 误差标准阈值; 以及基于所确定的频率 - 误差准则阈值来选择相关方案。

4. 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。

5. 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。

6. 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。

7. 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。

8. 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。

9. 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。

10. 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.

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