公开(公告)号：US08903024B2

公开(公告)日：2014-12-02

申请号：US13609618

申请日：2012-09-11

申请人： Yong Ho Lee ,  Pan Soo Kim ,  Deock Gil Oh

发明人： Yong Ho Lee ,  Pan Soo Kim ,  Deock Gil Oh

IPC分类号： H04L27/06

CPC分类号： H04L1/005

摘要： Provided is an apparatus and method for iteratively detecting and decoding a received signal in a wireless communication system. An apparatus for iterative detection and decoding (IDD) in a wireless communication system may determine a predetermined group to be updated in a first soft decision sequence, may transmit detection control information of the determined group, and may generate a second soft decision sequence based on a detection operation result of a predetermined received signal portion that is extracted based on the detection control information.

摘要翻译： 提供了一种用于在无线通信系统中迭代地检测和解码接收信号的装置和方法。 用于无线通信系统中的迭代检测和解码（IDD）的装置可以确定要在第一软判决序列中更新的预定组，可以发送所确定的组的检测控制信息，并且可以基于 基于检测控制信息提取的预定接收信号部分的检测操作结果。

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。

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。

公开(公告)号：US20130051693A1

公开(公告)日：2013-02-28

申请号：US13423431

申请日：2012-03-19

申请人： Joon Gyu RYU ,  Deock Gil OH

发明人： Joon Gyu RYU ,  Deock Gil OH

IPC分类号： G06K9/36

CPC分类号： H04H20/423 ,  H04H20/74 ,  H04H60/07 ,  H04H60/32 ,  H04H2201/30 ,  H04N7/20 ,  H04N21/2383 ,  H04N21/6143 ,  H04N21/6379

摘要： Provided are an adaptive coding modulation (ACM)-based simulcast transmission and reception apparatus and method. The apparatus includes a transmitter configured to analyze whether or not it is raining in a region where a receiver is present on the basis of channel state information (CSI) provided by the receiver, encode and/or modulate an image signal according to the analysis result, and provide the encoded and/or modulated image signal through a single band or multiple bands. On the basis of a result of analyzing whether or not it is raining in a region where a receiver is present, it is possible to effectively prevent signal attenuation caused by rain by providing image signals having different resolutions through multiple bands when the region is in a rainfall state.

摘要翻译： 提供了一种基于自适应编码调制（ACM）的联播传输和接收设备和方法。 该装置包括发射机，被配置为基于接收机提供的信道状态信息（CSI）来分析在接收机所在的区域中是否下雨，根据分析结果编码和/或调制图像信号 并且通过单个频带或多个频带提供编码和/或调制的图像信号。 基于在接收机存在的区域中分析是否下雨的结果的基础，当区域处于该区域时，通过提供具有不同分辨率的图像信号，可以有效地防止由雨水引起的信号衰减 降雨状态。

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。

公开(公告)号：US07920503B2

公开(公告)日：2011-04-05

申请号：US10724346

申请日：2003-11-26

申请人： Kwang Jae Lim ,  Soo Young Kim ,  Deock Gil Oh

发明人： Kwang Jae Lim ,  Soo Young Kim ,  Deock Gil Oh

IPC分类号： H04B7/185 ,  H04B7/216 ,  H04B7/19

CPC分类号： H04B7/2041 ,  H04B7/216

摘要： Provided are a packet transmission method for transmitting packets in a forward link of a multibeam satellite communication system and a computer-readable recording medium for recording a program that implements the method. The packet transmission method transmitting packets to mobile stations in a forward link of a multibeam satellite communication system, comprising the steps of: wherein downlink beams of a satellite share an orthogonal spreading code set for transmitting packets to the mobile stations, a) generating downlink beam signals by using an identical structure for the radio frames transmitted through the downlink beams and an identical pseudo-noise (PN) scrambling code for generating downlink beam signals; and b) synchronizing transmission timings of frames, symbols and spread chips on the downlink beam signals.

摘要翻译： 提供了一种用于在多波束卫星通信系统的前向链路中发送分组的分组传输方法和用于记录实现该方法的程序的计算机可读记录介质。 所述分组传输方法向多个卫星通信系统的前向链路中的移动站发送分组，包括以下步骤：卫星的下行链路波束共享用于向所述移动台发送分组的正交扩频码集，a）生成下行链路波束 通过对通过下行链路波束发送的无线电帧使用相同结构的信号和用于生成下行链路波束信号的相同伪噪声（PN）扰码; 以及b）在下行链路波束信号上同步帧，符号和扩展码片的发送定时。

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。

公开(公告)号：US07546509B2

公开(公告)日：2009-06-09

申请号：US10547236

申请日：2003-12-30

申请人： Soo Young Kim ,  Deock-Gil Oh ,  Jae-Moung Kim

发明人： Soo Young Kim ,  Deock-Gil Oh ,  Jae-Moung Kim

IPC分类号： H03M13/00

CPC分类号： H03M13/2963 ,  H03M13/033 ,  H03M13/152 ,  H03M13/29 ,  H03M13/2909 ,  H03M13/2918 ,  H03M13/47 ,  H03M13/635 ,  H03M13/6368 ,  H03M13/6381 ,  H04L1/0009 ,  H04L1/0057 ,  H04L1/0069 ,  H04L1/1819

摘要： The rate compatible code is formed by forming an m dimensional product code by using a systematic block code in a predetermined number of axes: The m dimensional product code is divided into an information block and 2m−1 parity blocks. Indices are allocated to the divided blocks of the information block and 2m−1 parity blocks. Combinations of the information block and corresponding parity blocks adjacent to the information block are obtained. A first weighting factor w1 for the combinations is estimated and saved. Another parity block adjacent to the saved combination is found and a new combination is formed. The first weighting factor w1 for the new combination is estimated. If there are combinations having the same first weighting factor w1, a second weighting factor w2 for the combinations is estimated and the combinations having a smaller value of w2 are neglected. Rate compatible having the combinations are formed.

摘要翻译： 速率兼容代码通过使用预定数量的轴中的系统块代码形成m维乘积代码形成：m维乘积代码被划分为信息块和2m-1个奇偶校验块。 指数被分配给信息块的分割块和2m-1个奇偶校验块。 获得与信息块相邻的信息块和对应的奇偶校验块的组合。 估计并保存组合的第一加权系数w1。 找到与保存的组合相邻的另一个奇偶校验块，并形成新的组合。 估计新组合的第一加权因子w1。 如果存在具有相同第一加权因子w1的组合，则估计用于组合的第二加权因子w2，并且忽略具有较小值w2的组合。 具有组合的速率兼容。

公开(公告)号：US07539920B2

公开(公告)日：2009-05-26

申请号：US11265451

申请日：2005-11-02

申请人： Eun-A Choi ,  Nae-Soo Kim ,  Deock-Gil Oh ,  Ji-Won Jung

发明人： Eun-A Choi ,  Nae-Soo Kim ,  Deock-Gil Oh ,  Ji-Won Jung

IPC分类号： H03M13/00

CPC分类号： H03M13/11

摘要： Provided are an LDPC decoding apparatus and method using a sequential decoding algorithm having a partial group, capable of reducing the number of an iterative decoding by more than half without degrading the performance and increasing an amount of computation. The LDPC decoding method includes the steps of: receiving a prior probability information (channel values) based on information on channel values associated with distance between symbol signals in constellation related to the received noise and LDPC encoded data, and initializing bit nodes; dividing check nodes into partial groups before updating check node information based on the prior probability information, and performing a decoding by applying a sequential decoding algorithm; determining whether a parity check equations are satisfied; and outputting decoded messages obtained when satisfying the parity check equation or after terminating an iterative processor by a termination algorithm.

摘要翻译： 提供了一种使用具有部分组的顺序解码算法的LDPC解码装置和方法，其能够将迭代解码的数量减少一半以上，而不降低性能并增加计算量。 LDPC解码方法包括以下步骤：基于与接收到的噪声相关的星座中的符号信号与LDPC编码数据之间的距离相关的信道值的信息，以及初始化比特节点，接收先验概率信息（信道值） 在根据先验概率信息更新校验节点信息之前，将校验节点划分为部分组，并通过应用顺序解码算法执行解码; 确定是否满足奇偶校验方程; 并输出在满足奇偶校验方程时获得的解码消息，或者通过终止算法终止迭代处理器。

公开(公告)号：US20080285685A1

公开(公告)日：2008-11-20

申请号：US12096119

申请日：2006-12-07

申请人： Dae-Ig Chang ,  Deock-Gil Oh ,  Kwang-Min Hyun ,  Dong-Weon Yoon ,  Sang-Kyu Park

发明人： Dae-Ig Chang ,  Deock-Gil Oh ,  Kwang-Min Hyun ,  Dong-Weon Yoon ,  Sang-Kyu Park

IPC分类号： H04L27/38

CPC分类号： H04L25/067 ,  H04L1/005 ,  H04L27/38

摘要： Provided are an apparatus and method for generating a soft bit metric and a multi-level (M-ary) Quadrature Amplitude Modulation (QAM) receiving system using the same. The apparatus includes an analog to digital converter for converting an analog symbol signal of a demodulated I (Inphase) or Q (Quadrature) channel into a digital signal, a sealer for scaling the converted digital signal based on a reference value used for determining a space between symbols, a positive integer converter for calculating a positive integer of the scaled digital I or Q channel symbol signal, a sign determinator for determining a sign of the scaled digital I or Q channel symbol signal, and a bit information converter for converting the scaled digital I or Q channel symbol signal into soft bit metric information per bit on the basis of the calculated positive integer and the determined sign value.

摘要翻译： 提供了一种用于生成软比特度量的装置和方法以及使用其的多级（M元）正交幅度调制（QAM）正交调制（QAM）接收系统。 该装置包括用于将解调的I（同相）或Q（正交）信道的模拟符号信号转换为数字信号的模数转换器，用于基于用于确定空间的参考值缩放转换的数字信号的缩放器 在符号之间，用于计算缩放的数字I或Q信道符号信号的正整数的正整数转换器，用于确定缩放的数字I或Q信道符号信号的符号的符号确定器，以及用于将缩放的 基于计算的正整数和确定的符号值，将数字I或Q通道符号信号转换为每位的软比特度量信息。