公开(公告)号：US20060087960A1

公开(公告)日：2006-04-27

申请号：US11116909

申请日：2005-04-28

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Jong-Bu Lim

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Jong-Bu Lim

IPC分类号： H04J11/00

CPC分类号： H04B7/02 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0055 ,  H04L1/0606 ,  H04L27/2602

摘要： A new diversity scheme for orthogonal frequency division multiplexing/multi-input multi-output (OFDM/MIMO) systems. The new diversity scheme, i.e., turbo layered space-frequency coded OFDM (TLSFC-OFDM), uses the turbo principle with space hopping (SH). The TLSFC-OFDM system uses a successive interference cancellation (SIC) algorithm to reduce the number of iterations. As a result, this scheme reduces computational complexity. Simulation results show that the SIC-based TLSFC-OFDM system outperforms a conventional OFDM/Horizontal Bell Labs Layered Space-Time (H-BLAST) system using a horizontal coding scheme.

摘要翻译： 一种用于正交频分复用/多输入多输出（OFDM / MIMO）系统的新分集方案。 新的分集方案，即turbo分层空间频率编码的OFDM（TLSFC-OFDM），使用具有空间跳变（SH）的turbo原理。 TLSFC-OFDM系统使用连续干扰消除（SIC）算法来减少迭代次数。 因此，该方案降低了计算复杂度。 仿真结果表明，基于SIC的TLSFC-OFDM系统优于使用水平编码方案的常规OFDM /水平贝尔实验室分层时空（H-BLAST）系统。

公开(公告)号：US07826517B2

公开(公告)日：2010-11-02

申请号：US11710856

申请日：2007-02-26

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

IPC分类号： H04B1/69 ,  H04B1/707 ,  H04B1/713

CPC分类号： H04B7/0854 ,  H04L1/0656

摘要： A receiver for ICI cancellation in a MIMO system is provided, in which a detection orderer determines a subcarrier detection order according to SINRs of subcarriers in an I-CMOS, a detector receives a vector on the subcarriers and a priori information from a decoder according to the subcarrier detection order and iteratively estimates the received vector using the a priori information, and the decoder decodes an ICI-cancelled signal according to the estimate.

摘要翻译： 提供了一种MIMO系统中用于ICI消除的接收机，其中检测对象根据I-CMOS中的子载波的SINR确定子载波检测顺序，检测器接收到子载波上的向量，根据 子载波检测顺序，并使用先验信息迭代地估计接收到的矢量，并且解码器根据估计解码ICI消除信号。

公开(公告)号：US20070248151A1

公开(公告)日：2007-10-25

申请号：US11710856

申请日：2007-02-26

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jong-Hyun Kwun ,  Jong-Bu Lim ,  Gi-Hong Im ,  Chan-Ho Choi

IPC分类号： H04B1/00

CPC分类号： H04B7/0854 ,  H04L1/0656

摘要： A receiver for ICI cancellation in a MIMO system is provided, in which a detection orderer determines a subcarrier detection order according to SINRs of subcarriers in an I-CMOS, a detector receives a vector on the subcarriers and a priori information from a decoder according to the subcarrier detection order and iteratively estimates the received vector using the a priori information, and the decoder decodes an ICI-cancelled signal according to the estimate.

摘要翻译： 提供了一种MIMO系统中用于ICI消除的接收机，其中检测对象根据I-CMOS中的子载波的SINR确定子载波检测顺序，检测器接收到子载波上的向量，根据 子载波检测顺序，并使用先验信息迭代地估计接收到的矢量，并且解码器根据估计解码ICI消除信号。

公开(公告)号：US07450652B2

公开(公告)日：2008-11-11

申请号：US10993105

申请日：2004-11-19

申请人： Cheol-Jin Park ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Ho-Jin Kim

发明人： Cheol-Jin Park ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Ho-Jin Kim

IPC分类号： H04K1/10

CPC分类号： H04L27/2607 ,  H04L27/2647 ,  H04L2025/03414

摘要： A receiving apparatus in an OFDM communication system, in which the receiving apparatus includes a serial-to-parallel converter that converts a serial signal received through an antenna to parallel signals. A pre-processor processes an nth symbol converted in the serial-to-parallel converter using an (n−1)th symbol and an (n+1)th symbol. A Fourier transformer Fourier-transforms the output of the pre-processor and an equalizer equalizes a Fourier-transformed signal. A deinterleaver deinterleaves an equalized signal, a decoder decodes a deinterleaved signal, and a parallel-to-serial converter converts parallel decoded signal to a signal stream.

摘要翻译： OFDM通信系统中的接收装置，其中接收装置包括串行到并行转换器，其将通过天线接收的串行信号转换为并行信号。 预处理器使用第（n-1）个符号和第（n + 1）个符号处理在串行到并行转换器中转换的第n个符号。 傅里叶变换器对预处理器的输出进行傅立叶变换，均衡器对傅立叶变换信号进行均衡。 解交织器对均衡信号进行解交织，解码器对解交织信号进行解码，并行到串行转换器将并行解码信号转换为信号流。

公开(公告)号：US20060215541A1

公开(公告)日：2006-09-28

申请号：US11387415

申请日：2006-03-23

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won ,  Jin-Ho Jang

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won ,  Jin-Ho Jang

IPC分类号： H04J11/00

CPC分类号： H04L1/0606 ,  H04B7/06 ,  H04L25/03159

摘要： Disclosed is a transceiving apparatus and method in which a space frequency block coding (SFBC) technique is applied to the SC-FDE technique. The transceiving method encodes an input signal into frequency-domain blocks so as to output at least two signal blocks in parallel to each other, inserts a cyclic prefix (CP) into the output signal blocks, and outputs the signal blocks through the same sub-channel by means of corresponding antenna.

摘要翻译： 公开了一种将空间频率块编码（SFBC）技术应用于SC-FDE技术的收发装置和方法。 收发方法将输入信号编码成频域块，以便彼此并行地输出至少两个信号块，将循环前缀（CP）插入到输出信号块中，并通过相同子帧输出信号块， 通过相应的天线。

公开(公告)号：US20050271152A1

公开(公告)日：2005-12-08

申请号：US11143040

申请日：2005-06-02

申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Cheol-Jin Park

发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Cheol-Jin Park

IPC分类号： H04J11/00 ,  H04L27/26 ,  H04K1/10

CPC分类号： H04L27/264 ,  H04L27/2634

摘要： Disclosed is a multicarrier-based wireless communication system including a base station for providing a multiple access service to terminals which filter multitone transmitting signals through filters and transmit the filtered signals. A transmitter of the respective terminals includes a multiplexer for multiplexing an input signal and outputting the signal as a plurality of transmitting signals, at least one filter bank for filtering the plurality of transmitting signals, an inverse fast Fourier transformer for executing inverse fast Fourier transform of the filtered transmitting signals output from the filter bank, and a filter information generator for providing filter information to the filter bank. Since the transmitter of the present invention distinguishes users from each other by a filter and thus no synchronization is required between users, which causes a problem in an uplink of the multicarrier-based wireless communication system, system performance can be expected to be improved.

摘要翻译： 公开了一种基于多载波的无线通信系统，其包括用于向通过滤波器过滤多频发送信号的终端提供多址服务的基站，并发送经滤波的信号。 各个终端的发射机包括多路复用器，用于多路复用输入信号并输出​​该信号作为多个发送信号，至少一个用于对多个发送信号进行滤波的滤波器组，用于执行快速傅立叶逆变换 从滤波器组输出的经滤波的发送信号，以及用于向滤波器组提供滤波器信息的滤波器信息发生器。 由于本发明的发射机通过滤波器将用户彼此区分，因此在用户之间不需要同步，这导致基于多载波的无线通信系统的上行链路中的问题，可以期望提高系统性能。

公开(公告)号：US20070258528A1

公开(公告)日：2007-11-08

申请号：US11787433

申请日：2007-04-16

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Uj-Kun Kwon ,  Gi-Hong Im ,  Jung-Hun Ryu

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Uj-Kun Kwon ,  Gi-Hong Im ,  Jung-Hun Ryu

IPC分类号： H04L27/28 ,  H04L25/08 ,  H04L1/00

CPC分类号： H04L27/2623 ,  H04L27/2647

摘要： Provided are an apparatus for reducing clipping noise in a broadband wireless communication system in which a clipping method is used and a method thereof. The method includes, when clipped signals are received, decoding and equalizing the received signals to determine transmitted symbols, comparing the magnitudes of the amplitudes of the determined transmitted symbols with a predetermined reference value, and reconstructing signals using the amplitudes of the transmitted symbols and the phases of the received signals when it is determined that the magnitudes of the amplitudes of the transmitted symbols are greater than the reference value.

摘要翻译： 提供了一种用于在其中使用限幅方法的宽带无线通信系统中减少削波噪声的装置及其方法。 该方法包括：当接收到限幅信号时，对接收到的信号进行解码和均衡以确定发送的符号，将所确定的发送符号的幅度的大小与预定的参考值进行比较，以及使用所发送的符号的幅度和 当确定发送符号的幅度的大小大于参考值时，接收信号的相位。

公开(公告)号：US20070230383A1

公开(公告)日：2007-10-04

申请号：US11649168

申请日：2007-01-03

申请人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

发明人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

IPC分类号： H04B7/00

CPC分类号： H04L1/0618

摘要： A method and apparatus for transmitting and receiving a signal in a wireless communication system. The wireless communication system includes a transmitter with at least four transmit antennas and a receiver with at least one receive antenna. Space Frequency Block Coding (SFBC) processes are performed for input signals on a basis of two antenna pairs. Signal blocks whose number corresponds to the number of transmit antennas are output. A Space Time Block Coding (STBC) process is performed for the signal blocks generated according to the antenna pairs. Signals carried by single carriers are transmitted through the at least four transmit antennas mapped to the signal blocks.

摘要翻译： 一种用于在无线通信系统中发送和接收信号的方法和装置。 无线通信系统包括具有至少四个发射天线的发射机和具有至少一个接收天线的接收机。 对于基于两个天线对的输入信号执行空间频率块编码（SFBC）处理。 输出与发送天线数对应的信号块。 对根据天线对产生的信号块执行空时块编码（STBC）处理。 由单载波携带的信号通过映射到信号块的至少四个发射天线发射。

公开(公告)号：US20060159196A1

公开(公告)日：2006-07-20

申请号：US11335268

申请日：2006-01-19

申请人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won

发明人： Jong-Hyung Kwun ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Hui-Chul Won

IPC分类号： H04L1/02 ,  H04B1/10 ,  H04L27/06

CPC分类号： H04L1/0631 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/0212 ,  H04L25/03006 ,  H04L27/2607 ,  H04L2025/03617

摘要： An apparatus and method for channel estimation and CP reconstruction in an OFDM-STBC mobile communication system are provided. An ISI canceller cancels ISI signal components from first and second received symbol sequences. A cyclicity restorer cancels ICI signal components from the ISI-cancelled first received symbol sequence and the ISI-cancelled second received symbol sequence. A recoverer acquires the recovered sequence estimates of the ICI-cancelled first received symbol sequence and the ICI-cancelled second received symbol sequence by decoding. The ICI cancellation of the ISI-cancelled first and second received symbol sequences and the ISI cancellation of the second received symbol sequence are iterated a predetermined number of times.

公开(公告)号：US08005031B2

公开(公告)日：2011-08-23

申请号：US11649168

申请日：2007-01-03

申请人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

发明人： Tae-Won Yune ,  Jong-Hyeuk Lee ,  Gi-Hong Im ,  Eung-Sun Kim ,  Jong-Hyung Kwun

IPC分类号： H04B7/00

CPC分类号： H04L1/0618

摘要： A method and apparatus for transmitting and receiving a signal in a wireless communication system. The wireless communication system includes a transmitter with at least four transmit antennas and a receiver with at least one receive antenna. Space Frequency Block Coding (SFBC) processes are performed for input signals on a basis of two antenna pairs. Signal blocks whose number corresponds to the number of transmit antennas are output. A Space Time Block Coding (STBC) process is performed for the signal blocks generated according to the antenna pairs. Signals carried by single carriers are transmitted through the at least four transmit antennas mapped to the signal blocks.

摘要翻译： 一种用于在无线通信系统中发送和接收信号的方法和装置。 无线通信系统包括具有至少四个发射天线的发射机和具有至少一个接收天线的接收机。 对于基于两个天线对的输入信号执行空间频率块编码（SFBC）处理。 输出与发送天线数对应的信号块。 对根据天线对产生的信号块执行空时块编码（STBC）处理。 由单载波携带的信号通过映射到信号块的至少四个发射天线发射。