专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US08537880B2 Apparatus and method for frame synchronization in satellite communication system 有权
标题翻译：卫星通信系统中帧同步的装置和方法
公开(公告)号：US08537880B2
公开(公告)日：2013-09-17
申请号：US13324351
申请日：2011-12-13
申请人： Vikas Agarwal , Pan-Soo Kim , Deock-Gil Oh
发明人： Vikas Agarwal , Pan-Soo Kim , Deock-Gil Oh
IPC分类号： H04W56/00
CPC分类号： H04H40/90
摘要： 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 value 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.
摘要翻译：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到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。

2. 发明申请

US20120147939A1 SIGNAL DEMODULATION METHOD AND APPARATUS AND SIGNAL MODULATION METHOD AND APPARATUS IN RETURN LINK OF SATELLITE SYSTEM 失效
标题翻译：卫星系统返回链路信号解调方法及装置及信号调制方法及装置
公开(公告)号：US20120147939A1
公开(公告)日：2012-06-14
申请号：US13314770
申请日：2011-12-08
申请人： Jae-Hee HAN , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
发明人： Jae-Hee HAN , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
IPC分类号： H04L7/00 , H04L1/00
CPC分类号： H04B7/2125 , H04B7/18589 , H04L7/04 , H04L2027/0024 , H04L2027/0067 , H04L2027/0079 , H04L2027/0095
摘要： A technology for modulating and demodulating a burst signal in a return link of a satellite system, in which the burst signal is modulated and transmitted from a transmission end of the return link and a symbol of the burst signal is identified and demodulated at a receiving end. The method includes estimating symbol timing of a burst received through the return link and synchronizing the estimated symbol timing of the burst to reference symbol timing; synchronizing a location of the timing-synchronized burst having the symbol timing synchronized to a location of a reference burst using a preamble symbol and a post-amble symbol of the timing-synchronized burst; and recovering a carrier of the location-synchronized burst whose location has been synchronized to the location of the reference burst using a pilot symbol of the location-synchronized burst.
摘要翻译：一种用于调制和解调卫星系统的返回链路中的突发信号的技术，其中突发信号从返回链路的发送端被调制和发送，并且在接收端被识别和解调。该方法包括估计通过返回链路接收的脉冲串的符号定时，并将脉冲串的估计符号定时与参考符号定时同步; 使用前导码符号和定时同步脉冲串的后导码符号来将具有与参考突发的位置同步的符号定时的定时同步突发的位置同步; 以及使用位置同步突发的导频符号来恢复其位置已被同步到参考突发的位置的位置同步突发的载波。

3. 发明授权

US08699628B2 Signal demodulation method and apparatus and signal modulation method and apparatus in return link of satellite system 失效
标题翻译：卫星系统回波信号解调方法及装置及信号调制方法及装置
公开(公告)号：US08699628B2
公开(公告)日：2014-04-15
申请号：US13314770
申请日：2011-12-08
申请人： Jae-Hee Han , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
发明人： Jae-Hee Han , Pan-Soo Kim , Deock-Gil Oh , Xavier Giraud
IPC分类号： H04L27/00
CPC分类号： H04B7/2125 , H04B7/18589 , H04L7/04 , H04L2027/0024 , H04L2027/0067 , H04L2027/0079 , H04L2027/0095
摘要： A technology for modulating and demodulating a burst signal in a return link of a satellite system, in which the burst signal is modulated and transmitted from a transmission end of the return link and a symbol of the burst signal is identified and demodulated at a receiving end. The method includes estimating symbol timing of a burst received through the return link and synchronizing the estimated symbol timing of the burst to reference symbol timing; synchronizing a location of the timing-synchronized burst having the symbol timing synchronized to a location of a reference burst using a preamble symbol and a post-amble symbol of the timing-synchronized burst; and recovering a carrier of the location-synchronized burst whose location has been synchronized to the location of the reference burst using a pilot symbol of the location-synchronized burst.
摘要翻译：一种用于调制和解调卫星系统的返回链路中的突发信号的技术，其中突发信号从返回链路的发送端被调制和发送，并且在接收端被识别和解调。该方法包括估计通过返回链路接收的脉冲串的符号定时，并将脉冲串的估计符号定时与参考符号定时同步; 使用前导码符号和定时同步脉冲串的后导码符号来将具有与参考突发的位置同步的符号定时的定时同步突发的位置同步; 以及使用位置同步突发的导频符号来恢复其位置已被同步到参考突发的位置的位置同步突发的载波。

4. 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。

5. 发明申请

US20120087403A1 COMMUNICATION APPARATUS FOR CONTINUOUS PHASE MODULATION SIGNAL 有权
标题翻译：连续相位调制信号通信装置
公开(公告)号：US20120087403A1
公开(公告)日：2012-04-12
申请号：US13270763
申请日：2011-10-11
申请人： Pan-Soo Kim , Yong-Ho Lee , Deock-Gil Oh , Xavier Giraud
发明人： Pan-Soo Kim , Yong-Ho Lee , Deock-Gil Oh , Xavier Giraud
IPC分类号： H04L27/20 , H04B17/00 , H04L27/22
CPC分类号： H04L27/2003 , H04L27/227 , H04L2027/0067
摘要： 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.
摘要翻译：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。

6. 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。

7. 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。

8. 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。

9. 发明申请

US20080273585A1 Apparatus for Estimating Phase Error and Phase Error Correction System Using the Same 失效
标题翻译：用于估计相位误差和相位误差校正系统的装置
公开(公告)号：US20080273585A1
公开(公告)日：2008-11-06
申请号：US12094851
申请日：2006-09-11
申请人： Pan-Soo Kim , Byoung-Hak Kim , Yun-Jeong Song , Deock-Gil Oh , Ho-Jin Lee , Jun Heo , Joong-Gon Ryoo
发明人： Pan-Soo Kim , Byoung-Hak Kim , Yun-Jeong Song , Deock-Gil Oh , Ho-Jin Lee , Jun Heo , Joong-Gon Ryoo
IPC分类号： H04B17/00 , H04L7/00
CPC分类号： H04L27/0014 , H04L2027/0057 , H04L2027/0067
摘要： Provided are an apparatus for estimating a phase error and a phase error correcting system using the phase error estimating apparatus. The apparatus includes: a probability value estimating unit for estimating a negative log probability value for each transmission symbol by transforming a soft output information transferred from the outside to a log A posterior probability ratio (LAPPR) value; an APP value calculating unit for calculating a posterior probability (APP) value by applying a negative exponential function to the transmission symbol; an average value deciding unit for deciding an average value for each transmission symbol using the probability information entirely, partially, or selectively according to a probability information type; and a symbol phase estimating unit for estimating a phase of a symbol based on the decided average value.
摘要翻译：提供了一种使用相位误差估计装置估计相位误差的装置和相位误差校正系统。该装置包括：概率值估计单元，用于通过将从外部传送的软输出信息变换为对数A后验概率比（LAPPR）值来估计每个发送符号的负对数概率值; APP值计算单元，用于通过对发送符号应用负指数函数来计算后验概率（APP）值; 平均值确定单元，用于根据概率信息类型完全，部分或选择地使用概率信息来确定每个传输符号的平均值; 以及符号相位估计单元，用于基于所确定的平均值来估计符号的相位。

10. 发明授权

US08731032B2 Communication apparatus for continuous phase modulation signal 有权
标题翻译：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
申请人： Pan-Soo Kim , Yong-Ho Lee , Deock-Gil Oh , Xavier Giraud
发明人： Pan-Soo Kim , Yong-Ho Lee , Deock-Gil Oh , Xavier Giraud
IPC分类号： H04B1/38 , H03D3/00 , G01S7/40
CPC分类号： H04L27/2003 , H04L27/227 , H04L2027/0067
摘要： 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.
摘要翻译：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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式