公开(公告)号：US07356320B2

公开(公告)日：2008-04-08

申请号：US11015471

申请日：2004-12-20

申请人： Soo-Bok Yeo ,  Sang-Min Bae ,  Jong-Han Lim ,  Ji-Won Ha ,  Yong-Won Shin

发明人： Soo-Bok Yeo ,  Sang-Min Bae ,  Jong-Han Lim ,  Ji-Won Ha ,  Yong-Won Shin

IPC分类号： H04B1/30

CPC分类号： H04B1/30

摘要： An apparatus for removing a DC offset during frequency direct conversion in a reception device of a wireless communication system. In the apparatus, an adder receives a digital baseband signal comprising a DC component, receives an estimated DC offset value, and calculates a difference between the digital baseband signal with the DC component and the estimated DC offset value. A DC offset calculator receives gain mode information of an analog element of the reception device, and calculates the estimated DC offset value according to the gain mode.

摘要翻译： 一种用于在无线通信系统的接收装置中的频率直接转换期间去除DC偏移的装置。 在该装置中，加法器接收包括DC分量的数字基带信号，接收估计的DC偏移值，并计算具有DC分量的数字基带信号与估计的DC偏移值之间的差。 DC偏移计算器接收接收装置的模拟元件的增益模式信息，并根据增益模式计算估计的DC偏移值。

公开(公告)号：US20050136874A1

公开(公告)日：2005-06-23

申请号：US11015471

申请日：2004-12-20

申请人： Soo-Bok Yeo ,  Sang-Min Bae ,  Jong-Han Lim ,  Ji-Won Ha ,  Yong-Won Shin

发明人： Soo-Bok Yeo ,  Sang-Min Bae ,  Jong-Han Lim ,  Ji-Won Ha ,  Yong-Won Shin

IPC分类号： H04L25/12 ,  H04B1/30 ,  H04B1/10

CPC分类号： H04B1/30

摘要： An apparatus for removing a DC offset during frequency direct conversion in a reception device of a wireless communication system. In the apparatus, an adder receives a digital baseband signal comprising a DC component, receives an estimated DC offset value, and calculates a difference between the digital baseband signal with the DC component and the estimated DC offset value. A DC offset calculator receives gain mode information of an analog element of the reception device, and calculates the estimated DC offset value according to the gain mode.

摘要翻译： 一种用于在无线通信系统的接收装置中的频率直接转换期间去除DC偏移的装置。 在该装置中，加法器接收包括DC分量的数字基带信号，接收估计的DC偏移值，并计算具有DC分量的数字基带信号与估计的DC偏移值之间的差。 DC偏移计算器接收接收装置的模拟元件的增益模式信息，并根据增益模式计算估计的DC偏移值。

公开(公告)号：US07170923B2

公开(公告)日：2007-01-30

申请号：US10338714

申请日：2003-01-09

申请人： Soo-Bok Yeo ,  Sang-Min Bae ,  Ji-Won Ha ,  Jong-Han Kim

发明人： Soo-Bok Yeo ,  Sang-Min Bae ,  Ji-Won Ha ,  Jong-Han Kim

IPC分类号： H04B1/69 ,  H04B7/00 ,  H04B7/216

CPC分类号： H04L1/20 ,  H04B1/70755 ,  H04B2201/70709 ,  H04L1/201

摘要： An apparatus for detecting a frame transmission period in a CDMA mobile communication system supporting a discontinuous transmission mode. A first frame detector performs primary frame detection by calculating a signal-to-interference ratio (SIR) using traffic symbol energy, pilot symbol energy and noise energy measured for a predetermined time period, and comparing the SIR with a predetermined frame detection threshold value. A decoder calculates a symbol error rate (SER) by decoding symbols received for the predetermined time period. A second frame detector selects an SER threshold value according to frame detection information from the first frame detector, and compares the selected SER threshold value with the SER to determine whether a frame has been transmitted.

摘要翻译： 一种在支持不连续传输模式的CDMA移动通信系统中检测帧传输周期的装置。 第一帧检测器通过使用在预定时间段内测量的业务符号能量，导频符号能量和噪声能量，并将SIR与预定帧检测阈值进行比较来计算信号干扰比（SIR）来执行主帧检测。 解码器通过解码在预定时间段内接收到的符号来计算符号错误率（SER）。 第二帧检测器根据来自第一帧检测器的帧检测信息选择SER阈值，并将所选择的SER阈值与SER进行比较，以确定帧是否已被发送。

公开(公告)号：US07487430B2

公开(公告)日：2009-02-03

申请号：US10397522

申请日：2003-03-27

申请人： Se-Hyoung Kim ,  Woo-Sang Hong ,  Ji-Won Ha ,  Sang-Min Bae ,  Jin-Woo Heo ,  Soo-Bok Yeo

发明人： Se-Hyoung Kim ,  Woo-Sang Hong ,  Ji-Won Ha ,  Sang-Min Bae ,  Jin-Woo Heo ,  Soo-Bok Yeo

IPC分类号： H03M13/00 ,  H03M13/03 ,  H03D1/00

CPC分类号： H04L1/0046 ,  H04L1/0054 ,  H04L1/0068 ,  H04L1/0071 ,  H04L1/08 ,  H04L1/1812

摘要： An apparatus and method for receiving control information transmitted from a transmitter using one of a plurality of slot lengths in a high-speed packet transmission mobile communication system is provided. The apparatus and method includes a decoder adapted to receive symbols by the slot, and generate at least one bit stream by decoding as many symbols of at least one possible slot length among a plurality of slot lengths according to a previous decoding result. An error checker adapted to perform error checking on the bit stream from the decoder. A controller is adapted to provide symbols of one more consecutive slot to the decoder, if the error checking failed, and acquire control information from the error checking-passed bit stream, if the error check passed. The decoder is further adapted to output at least one frame quality metric for the bit stream along with the bit stream. If the number of error checking-passed bit streams is larger than or equal to 2, the controller compares frame quality metrics for the bit streams and selects one bit stream having the maximum frame quality metric in order to acquire the control information.

摘要翻译： 提供一种用于在高速分组传输移动通信系统中接收从发射机发送的多个时隙长度之一的控制信息的装置和方法。 该装置和方法包括一个适于通过时隙接收符号的解码器，并且通过根据先前的解码结果解码多个时隙长度中的至少一个可能的时隙长度的多个符号来生成至少一个比特流。 一个错误检查器，适用于从解码器对比特流执行错误检查。 如果错误检查失败，则控制器适于向解码器提供一个连续时隙的符号，并且如果通过了错误检查，则从错误检查传递的比特流中获取控制信息。 解码器还适用于与位流一起输出比特流的至少一个帧质量度量。 如果错误检查传递的比特流的数量大于或等于2，则控制器比较比特流的帧质量度量并选择具有最大帧质量度量的一个比特流，以便获取控制信息。

公开(公告)号：US07376095B2

公开(公告)日：2008-05-20

申请号：US10225652

申请日：2002-08-21

申请人： Sang-Min Bae ,  Ji-Won Ha ,  Jin-Woo Heo ,  Jong-Han Kim

发明人： Sang-Min Bae ,  Ji-Won Ha ,  Jin-Woo Heo ,  Jong-Han Kim

IPC分类号： H04B7/216

CPC分类号： H04B7/022 ,  H04B1/7117 ,  H04B17/336 ,  H04B2201/70701

摘要： An apparatus and method for measuring an SIR in a CDMA mobile communication system. The SIRs and power of PICHs and the power of PDCHs are measured sequentially for a plurality of active set base stations. An active set base station having the highest signal strength is selected according to the measurements. Thus a data rate is determined adaptively to the SIR for efficient high rate packet data transmission.

摘要翻译： 一种用于测量CDMA移动通信系统中的SIR的装置和方法。 对于多个有源集合基站，顺序地测量PICH的SIR和功率以及PDCH的功率。 根据测量选择具有最高信号强度的有源集合基站。 因此，为了有效的高速率分组数据传输，自适应地确定数据速率。

公开(公告)号：US20070130495A1

公开(公告)日：2007-06-07

申请号：US11523323

申请日：2006-09-18

申请人： Jung-Wook Yoon ,  Ji-Won Ha ,  Min-Goo Kim ,  Sung-Jin Park

发明人： Jung-Wook Yoon ,  Ji-Won Ha ,  Min-Goo Kim ,  Sung-Jin Park

IPC分类号： H03M13/00

CPC分类号： H04L1/0061 ,  H04L1/0046 ,  H04L1/0072

摘要： A method and apparatus of multi-Cyclic Redundancy Checking (CRC) are provided for section detection and reliability information acquisition in a Digital Video Broadcasting-Handheld (DVB-H) system. A Packet Identifier (PID) filtering process is performed for a packet received through a radio network. A transport stream packet including section data is detected. A CRC process is performed for a payload of an associated section using header information of the section data and frame buffering is processed. The method and apparatus can perform CRC in a parallel fashion using multiple CRC checkers without interference between adjacent sections and can perform section detection and reliability verification.

摘要翻译： 提供了一种多循环冗余校验（CRC）方法和装置，用于数字视频广播手持（DVB-H）系统中的区段检测和可靠性信息采集。 对通过无线电网络接收的分组执行分组标识符（PID）过滤。 检测包括段数据的传输流分组。 使用区段数据的头部信息对相关区段的有效载荷执行CRC处理，并处理帧缓冲。 该方法和装置可以使用多个CRC检查器以并行方式执行CRC，而不会在相邻部分之间产生干扰，并且可以执行部分​​检测和可靠性验证。

公开(公告)号：US20060182189A1

公开(公告)日：2006-08-17

申请号：US11148179

申请日：2005-06-09

申请人： Hyun-Seok Yu ,  Hyun-Seok Oh ,  Ji-Won Ha ,  Min-Goo Kim

发明人： Hyun-Seok Yu ,  Hyun-Seok Oh ,  Ji-Won Ha ,  Min-Goo Kim

IPC分类号： H04K1/10

CPC分类号： H04L27/2649 ,  H04L25/061 ,  H04L2027/0016

摘要： An optimum I/Q imbalance compensating apparatus and method in a zero-IF OFDM receiver. In the apparatus, a first compensator generates a first symbol by removing interference from a second distorted symbol on an (Ns−m+1)th subcarrier from a first distorted symbol on an mth subcarrier by a first compensation coefficient in an OFDM FFT signal of Ns subcarriers. A first hard decider generates a first compensated symbol by hard-decision on the first symbol, an error calculator generates an error symbol by subtracting the first received symbol from the first compensated symbol. A second compensator generates a second symbol by eliminating interference from the first distorted symbol from the second distorted symbol using a second compensation coefficient. A second hard decider generates a second compensated symbol by hard-decision on the second symbol, and an adaptive controller updates the first compensation coefficient using the error symbol and the second compensation symbol.

摘要翻译： 零中频OFDM接收机中的最佳I / Q不平衡补偿装置和方法。 在该装置中，第一补偿器通过从第一失真符号（N SUB S-m + 1）第（S）个子载波上去除来自第二失真符号的干扰来产生第一符号 在第N个子载波上的OFDM FFT信号中的第一补偿系数。 第一硬判决器通过对第一符号进行硬判决来生成第一补偿符号，误差计算器通过从第一补偿符号减去第一接收符号来生成误差符号。 第二补偿器通过使用第二补偿系数消除来自第二失真符号的来自第一失真符号的干扰来产生第二符号。 第二硬判定器通过第二符号上的硬判决产生第二补偿符号，并且自适应控制器使用误差符号和第二补偿符号来更新第一补偿系数。

公开(公告)号：US20060120271A1

公开(公告)日：2006-06-08

申请号：US11293638

申请日：2005-12-02

申请人： Hyun-Seok Yu ,  Hyun-Seok Oh ,  Ji-Won Ha ,  Min-Goo Kim

发明人： Hyun-Seok Yu ,  Hyun-Seok Oh ,  Ji-Won Ha ,  Min-Goo Kim

IPC分类号： H04J11/00

CPC分类号： H04L27/2662 ,  H04B7/022 ,  H04B7/0671 ,  H04L25/247 ,  H04L27/2607

摘要： A gap filler apparatus providing cyclic delay diversity in a digital multimedia broadcasting (DMB) system. In the gap filler apparatus, a receiver receives an orthogonal frequency division multiplexing (OFDM) signal transmitted as a broadcasting signal. A symbol synchronization unit acquires symbol synchronization of the OFDM signal, detects a guard interval of an OFDM symbol using the symbol synchronization, determines a sample length, by which the OFDM symbol is cyclic-delayed within the guard interval, and cyclic-delays the OFDM signal by the determined sample length. An amplifier amplifies the cyclic-delayed OFDM signal. A transmitter transmits the amplified OFDM signal to a wireless network.

摘要翻译： 一种在数字多媒体广播（DMB）系统中提供循环延迟分集的间隙填充装置。 在间隙填充装置中，接收机接收作为广播信号发送的正交频分复用（OFDM）信号。 符号同步单元获取OFDM信号的符号同步，使用符号同步检测OFDM符号的保护间隔，确定OFDM符号在保护间隔内被循环延迟的采样长度，并循环延迟OFDM 通过确定的样本长度信号。 放大器放大循环延迟的OFDM信号。 发射机将放大的OFDM信号发射到无线网络。

公开(公告)号：US06373902B1

公开(公告)日：2002-04-16

申请号：US09100331

申请日：1998-06-19

申请人： Jae-Sun Park ,  Gin-Kyu Choi ,  Ji-Won Ha

发明人： Jae-Sun Park ,  Gin-Kyu Choi ,  Ji-Won Ha

IPC分类号： H04K102

CPC分类号： H04L27/367

摘要： A device for linearizing a transmitter in a digital radio communication system. In the device, a predistortion lookup table stores predistortion data determined by measuring in advance distortion characteristics of the transmitter with respect to input baseband data. During transmission, the device synthesizes the input baseband data with the predistortion data to predistort the input data so as to compensate for the distortion characteristics caused by non-linear elements constituting the transmitter.

摘要翻译： 一种用于在数字无线电通信系统中线性化发射机的装置。 在该设备中，预失真查找表存储预先失真数据，该预失真数据通过相对于输入基带数据预先测量发射机的失真特性而进行测量。 在传输期间，设备将输入基带数据与预失真数据进行合成，以预失真输入数据，以补偿由构成发射机的非线性元件引起的失真特性。

公开(公告)号：US08559528B2

公开(公告)日：2013-10-15

申请号：US11521599

申请日：2006-09-15

申请人： Sung-Jin Park ,  Ji-Won Ha ,  Jin-Wook Han

发明人： Sung-Jin Park ,  Ji-Won Ha ,  Jin-Wook Han

IPC分类号： H04B1/66

CPC分类号： H04N21/4382 ,  H04L7/042 ,  H04N21/2389 ,  H04N21/4385

摘要： A method and apparatus for synchronization of a moving picture experts group (MPEG) transport stream, which minimizes an initial delay are provided. A packet synchronization unit and a mode of the packet synchronization unit to are initialized to “0”. Values of sync words are stored by shifting values of a sync word register when the sync words have been received and the received sync word is compared with predetermined code words As a result of the comparison, a determination is made as to whether a bit difference between the sync words and the predetermined code words exceeds a predetermined threshold value. A verification is then made as to whether all bits of the sync words correspond to all bits of the predetermined code words, when it is determined as a result of the determination that the bit difference is less than or equal to the predetermined threshold value and the MPEG transport stream is descrambled before returning to step of storing values of sync words by shifting values of a sync word register.

摘要翻译： 提供了使初始延迟最小化的运动图像专家组（MPEG）传输流的同步的方法和装置。 分组同步单元和分组同步单元的模式被初始化为“0”。 同步字的值通过移位同步字寄存器的值而被存储，同步字已经被接收并且接收到的同步字与预定的码字进行比较作为比较的结果，确定是否有位差 同步字和预定码字超过预定阈值。 然后，当作为确定比特差小于或等于预定阈值的结果确定同步字的所有比特是否对应于预定码字的所有比特时进行验证，并且 在转移同步字寄存器的值的同步字存储值的步骤之前，将MPEG传输流解扰。