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1. 发明授权

US07609615B2 Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system 有权
标题翻译：在OFDM系统中进行相干解调的信道补偿和符号解调的方法和装置
公开(公告)号：US07609615B2
公开(公告)日：2009-10-27
申请号：US11455784
申请日：2006-06-20
申请人： Eun-Jeong Yim , Ji-Won Ha , Hee-Jin Roh , Sung-Jin Park
发明人： Eun-Jeong Yim , Ji-Won Ha , Hee-Jin Roh , Sung-Jin Park
IPC分类号： H04L5/12
CPC分类号： H04L25/0212 , H04L25/03292 , H04L25/03318 , H04L27/2649
摘要： A method and apparatus for performing channel compensation and symbol demodulation using an estimated channel impulse response during coherent demodulation of a received Orthogonal Frequency Division Multiplexing (OFDM) signal are provided. In the apparatus, an FFT processor IFFT-processes a received signal. A channel compensator generates a channel-compensated signal by multiplying the FFT received signal by an estimated channel impulse response and calculates the power of the estimated channel impulse response. A symbol demodulator sets the power of the estimated channel impulse response as a reference point defining a minimum distance between signal points in a signal constellation, and decides soft metric values for channel decoding using the reference point and I-channel and Q-channel signal components of the channel-compensated signal. A decoder recovers information bits by decoding the soft metric values.
摘要翻译：提供一种在接收到的正交频分复用（OFDM）信号的相干解调期间使用估计的信道脉冲响应进行信道补偿和符号解调的方法和装置。在该装置中，FFT处理器IFFT处理接收到的信号。信道补偿器通过将FFT接收信号乘以估计的信道脉冲响应来产生信道补偿信号，并且计算估计的信道脉冲响应的功率。符号解调器将估计的信道脉冲响应的功率设置为定义信号星座中的信号点之间的最小距离的参考点，并且使用参考点和I信道和Q信道信号分量来确定用于信道解码的软度量值的信道补偿信号。解码器通过解码软度量值来恢复信息比特。

2. 发明申请

US20060285603A1 Method and apparatus for performing channel compensation and symbol demodulation for coherent demodulation in an OFDM system 有权
公开(公告)号：US20060285603A1
公开(公告)日：2006-12-21
申请号：US11455784
申请日：2006-06-20
申请人： Eun-Jeong Yim , Ji-Won Ha , Hee-Jin Roh , Sung-Jin Park
发明人： Eun-Jeong Yim , Ji-Won Ha , Hee-Jin Roh , Sung-Jin Park
IPC分类号： H04L5/12
CPC分类号： H04L25/0212 , H04L25/03292 , H04L25/03318 , H04L27/2649
摘要： A method and apparatus for performing channel compensation and symbol demodulation using an estimated channel impulse response during coherent demodulation of a received Orthogonal Frequency Division Multiplexing (OFDM) signal are provided. In the apparatus, an FFT processor IFFT-processes a received signal. A channel compensator generates a channel-compensated signal by multiplying the FFT received signal by an estimated channel impulse response and calculates the power of the estimated channel impulse response. A symbol demodulator sets the power of the estimated channel impulse response as a reference point defining a minimum distance between signal points in a signal constellation, and decides soft metric values for channel decoding using the reference point and I-channel and Q-channel signal components of the channel-compensated signal. A decoder recovers information bits by decoding the soft metric values.

3. 发明申请

US20070165729A1 Apparatus and method for receiving data in a wireless communication system using bit interleaving, symbol interleaving and symbol mapping 失效
标题翻译：在使用比特交织，符号交织和符号映射的无线通信系统中接收数据的装置和方法
公开(公告)号：US20070165729A1
公开(公告)日：2007-07-19
申请号：US11528694
申请日：2006-09-28
申请人： Ji-Won Ha , Eun-Jeong Yim , Hyun-Seok Oh , Jung-Wook Yoon
发明人： Ji-Won Ha , Eun-Jeong Yim , Hyun-Seok Oh , Jung-Wook Yoon
IPC分类号： H04K1/10
CPC分类号： H04L1/0071 , H04L1/0065 , H04L27/2647 , H04L27/3488
摘要： An apparatus and method are provided for receiving data generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping in a wireless communication system. A fast Fourier transform (FFT) processor receives in-phase/quadrature phase (I/Q) data of a radio channel generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping, and performs an FFT process for the I/Q data. A symbol deinterleaver performs a process for symbol deinterleaving the FFT I/Q data and reference values to be used for symbol demapping of the I/Q data and outputs the symbol-deinterleaved I/Q data and reference values. A symbol demapper performs a process for symbol demapping the symbol-deinterleaved I/Q data according to the reference values. A bit deinterleaver performs a process for bit deinterleaving the symbol-demapped data. A demultiplexer demultiplexes the bit-deinterleaved data.
摘要翻译：提供了一种装置和方法，用于通过在无线通信系统中顺序执行比特交织，符号交织和符号映射来接收生成的数据。快速傅里叶变换（FFT）处理器接收通过顺序执行比特交织，符号交织和符号映射而产生的无线电信道的同相/正交相位（I / Q）数据，并对I / Q数据执行FFT处理。符号解交织器执行用于符号解交织FFT I / Q数据和用于I / Q数据的符号解映射的参考值的处理，并输出符号解交织的I / Q数据和参考值。符号解映射器根据参考值执行对符号解交织的I / Q数据进行符号解映射的处理。一个位去交织器执行用于对符号解映射的数据进行位解交织的过程。解复用器对位解交织的数据进行解复用。

4. 发明授权

US07945001B2 Apparatus and method for receiving data in a wireless communication system using bit interleaving, symbol interleaving and symbol mapping 失效
标题翻译：在使用比特交织，符号交织和符号映射的无线通信系统中接收数据的装置和方法
公开(公告)号：US07945001B2
公开(公告)日：2011-05-17
申请号：US11528694
申请日：2006-09-28
申请人： Ji-Won Ha , Eun-Jeong Yim , Hyun-Seok Oh , Jung-Wook Yoon
发明人： Ji-Won Ha , Eun-Jeong Yim , Hyun-Seok Oh , Jung-Wook Yoon
IPC分类号： H04L27/06
CPC分类号： H04L1/0071 , H04L1/0065 , H04L27/2647 , H04L27/3488
摘要： An apparatus and method are provided for receiving data generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping in a wireless communication system. A fast Fourier transform (FFT) processor receives in-phase/quadrature phase (I/Q) data of a radio channel generated by sequentially performing bit interleaving, symbol interleaving and symbol mapping, and performs an FFT process for the I/Q data. A symbol deinterleaver performs a process for symbol deinterleaving the FFT I/Q data and reference values to be used for symbol demapping of the I/Q data and outputs the symbol-deinterleaved I/Q data and reference values. A symbol demapper performs a process for symbol demapping the symbol-deinterleaved I/Q data according to the reference values. A bit deinterleaver performs a process for bit deinterleaving the symbol-demapped data. A demultiplexer demultiplexes the bit-deinterleaved data.
摘要翻译：提供了一种装置和方法，用于通过在无线通信系统中顺序执行比特交织，符号交织和符号映射来接收生成的数据。快速傅里叶变换（FFT）处理器接收通过顺序执行比特交织，符号交织和符号映射生成的无线电信道的同相/正交相位（I / Q）数据，并对I / Q数据执行FFT处理。符号解交织器执行用于符号解交织FFT I / Q数据和用于I / Q数据的符号解映射的参考值的处理，并输出符号解交织的I / Q数据和参考值。符号解映射器根据参考值执行对符号解交织的I / Q数据进行符号解映射的处理。一个位去交织器执行用于对符号解映射的数据进行位解交织的过程。解复用器对位解交织的数据进行解复用。

5. 发明申请

US20070130495A1 Apparatus and method of multi-cyclic redundancy checking for section detection and reliability information acquisition in a DVB-H system 审中-公开
标题翻译： DVB-H系统中的段检测和可靠性信息采集的多循环冗余校验装置和方法
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。

6. 发明授权

US08559528B2 Synchronization method and apparatus of moving picture experts group transport stream for reducing initial delay 有权
标题翻译：运动图像专家组同步方法和装置，用于减少初始延迟
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。

7. 发明申请

US20070064814A1 Synchronization method and apparatus of moving picture experts group transport stream for reducing initial delay 有权
标题翻译：运动图像专家组同步方法和装置，用于减少初始延迟
公开(公告)号：US20070064814A1
公开(公告)日：2007-03-22
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。

8. 发明申请

US20060182189A1 Apparatus and method for optimally compensating for imbalance between in-phase and quadrature-phase in a zero-IF OFDM receiver 有权
标题翻译：用于最佳地补偿零中频OFDM接收机中的同相和正交相位之间的不平衡的装置和方法
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。

9. 发明申请

US20060120271A1 Gap filler apparatus and method for providing cyclic delay diversity in a digital multimedia broadcasting system, and broadcasting relay network using the same 有权
标题翻译：用于在数字多媒体广播系统中提供循环延迟分集的间隙填充装置和方法，以及使用其的广播中继网络
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。

10. 发明授权

US06373902B1 Device and method for linearizing transmitter in digital communication system 失效
标题翻译：在数字通信系统中线性化发射机的装置和方法
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。

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