公开(公告)号：US08010880B2

公开(公告)日：2011-08-30

申请号：US11556546

申请日：2006-11-03

申请人： Kyungsu Ko ,  Hwang Soo Lee ,  Nguyen Minh Viet

发明人： Kyungsu Ko ,  Hwang Soo Lee ,  Nguyen Minh Viet

IPC分类号： H03M13/00

CPC分类号： H03M13/2936 ,  H03M13/2732

摘要： Provided are a forward error correction decoder and a method thereof. The method comprises: generating mapping information on a location of a symbol; deciding a location of an error in a packet; deciding an erasure of a subsequent packet following the packet on the basis of the error location and the mapping information; and decoding the subsequent packet on the basis of the erasure.

摘要翻译： 提供一种前向纠错解码器及其方法。 该方法包括：生成关于符号的位置的映射信息; 决定分组中错误的位置; 基于所述错误位置和所述映射信息来决定所述分组之后的后续分组的擦除; 并基于擦除对后续分组进行解码。

公开(公告)号：US20110069787A1

公开(公告)日：2011-03-24

申请号：US12574464

申请日：2009-10-06

申请人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

发明人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

IPC分类号： H04L27/22 ,  H04B1/18

CPC分类号： H04L27/0002 ,  H04L27/0008 ,  H04L27/0012

摘要： Disclosed is a multi-channel signal receiver technology. An RF front-end in an RF receiver receiving at least two RF signals with different transmission bandwidths includes: at least two RF tuners receiving, amplifying, and frequency-converting the at least two RF signals, respectively; a switch selecting one of signals output from the at least two RF tuners; a channel filter eliminating interference signals included in a signal output from the switch, and passing a signal of a transmission band; an ADC converting the signal output from the channel filter into a digital signal; a fixed sampling frequency generator generating and transferring a fixed sampling frequency to the ADC.In the RF front-end, by processing filtering and sampling of signals with a narrow transmission bandwidth through a residual calculation capacity of a digital processor a construction of an RF front-end may be simplified and manufacturing costs may be reduced.

摘要翻译： 公开了一种多通道信号接收机技术。 RF接收器中的RF前端接收具有不同传输带宽的至少两个RF信号，包括：至少两个RF调谐器分别接收，放大和频率转换所述至少两个RF信号; 选择从所述至少两个RF调谐器输出的信号之一的开关; 滤波器，消除包含在从开关输出的信号中的干扰信号，并传递传输频带的信号; ADC将从信道滤波器输出的信号转换为数字信号; 固定的采样频率发生器产生并将固定采样频率传送到ADC。 在RF前端，通过对数字处理器的剩余计算能力对具有窄传输带宽的信号进行滤波和采样，可以简化RF前端的结构，并且可以降低制造成本。

公开(公告)号：US20110026617A1

公开(公告)日：2011-02-03

申请号：US12574354

申请日：2009-10-06

申请人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

发明人： Hwang Soo Lee ,  Moohong Lee ,  Jeong Han Jeong ,  Byungjik Keum ,  Young Serk Shim

IPC分类号： H04K1/10 ,  H04L27/06

CPC分类号： H04L27/2607 ,  H04L27/2657 ,  H04L27/2662

摘要： There is provided a method for effectively estimating transmission modes and lengths of guard intervals in the implementation of an integrated services digital broadcasting-T (ISDB-T) receiver. A method for estimating transmission modes and lengths of guard intervals in a broadcasting system having signals transmitted therein, the signals having a plurality of transmission modes, the transmission modes each having plural kinds of transmission symbols, the transmission symbols in each of the transmission modes having the same length of data intervals and different lengths of guard intervals, the transmission symbols in different transmission modes having different lengths of data intervals and different lengths of guard intervals, the guard interval in each of transmission symbols being obtained by copying a rear section of the data interval in each of the symbols and prefixing the copied rear section to a front section of the data interval, and one of the transmission symbols being periodically repeated, the method comprising: performing correlation while scanning the signals using a plurality of correlation windows respectively corresponding to the plurality of transmission modes; selecting the transmission mode corresponding to the correlation window having an outputted correlation result among the plurality of correlation windows as a transmission mode of a received signal; and estimating a existing time of the correlation result as the length of a guard interval in the received signal.

摘要翻译： 提供了一种在综合业务数字广播T（ISDB-T）接收机的实现中有效地估计保护间隔的传输模式和长度的方法。 一种用于估计其中发送信号的广播系统中的保护间隔的传输模式和长度的方法，具有多种传输模式的信号，每种传输模式具有多种传输符号，每种传输模式中的传输符号具有 相同长度的数据间隔和不同长度的保护间隔，不同传输模式下的传输符号具有不同长度的数据间隔和不同长度的保护间隔，每个传输符号中的保护间隔是通过复制 在每个符号中的数据间隔并且将复制的后部前缀到数据间隔的前部，并且周期性地重复发送符号中的一个，所述方法包括：在使用多个相关窗口分别对应地扫描信号时执行相关性 到多个传输 模式; 选择与所述多个相关窗口中具有输出的相关结果的相关窗口对应的传输模式作为接收信号的传输模式; 以及将相关结果的现有时间估计为接收信号中的保护间隔的长度。

公开(公告)号：US20090303867A1

公开(公告)日：2009-12-10

申请号：US12233084

申请日：2008-09-18

申请人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

发明人： Hwang-Soo Lee ,  Moo-Hong Lee ,  Jeong-Han Jeong ,  Young-Serk Shim ,  Byung-Jik Keum

IPC分类号： H04J11/00 ,  H04L27/28

CPC分类号： H04L27/2662 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2656 ,  H04L27/2675 ,  H04L27/2695

摘要： Disclosed are an apparatus and a method for preventing data read error for OFDM symbol demodulation. An average time synchronization offset estimating unit estimates average time synchronization offset between a pilot symbol of a time synchronized data frame and pilot symbols of data frames next to the time synchronized data frame. A data buffer control unit acquires a start location of a data frame to be read using the estimated average time synchronization offset, and controls reading of written data frames using the acquired start location information of the data frame to be read. In the apparatus and the method, a data buffering using a ring buffer construction may compensate time synchronization offset of samples containing real data in an OFDM symbol and prevent an erroneous read error in order to improve a receiving performance of a receiver.

摘要翻译： 公开了一种用于防止OFDM符号解调的数据读取错误的装置和方法。 平均时间同步偏移估计单元估计时间同步数据帧的导频符号与时间同步数据帧之后的数据帧的导频符号之间的平均时间同步偏移。 数据缓冲器控制单元使用估计的平均时间同步偏移来获取要读取的数据帧的开始位置，并且使用获取的要读取的数据帧的开始位置信息来控制写入的数据帧的读取。 在装置和方法中，使用环形缓冲器构造的数据缓冲可以补偿在OFDM符号中包含实际数据的样本的时间同步偏移，并且防止错误的读取错误，以便提高接收机的接收性能。