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1. 发明授权

US08891643B2 Method and apparatus for allocating transmission power in multi input multi output system 有权
标题翻译：在多输入多输出系统中分配发射功率的方法和装置
公开(公告)号：US08891643B2
公开(公告)日：2014-11-18
申请号：US13620517
申请日：2012-09-14
申请人： In Kyeong Choi , Sok Kyu Lee
发明人： In Kyeong Choi , Sok Kyu Lee
IPC分类号： H04K1/10 , H04L27/28 , H04W52/24 , H04W52/42
CPC分类号： H04W52/243 , H04B7/0443 , H04W52/42
摘要： A method and apparatus for allocating transmission power in a transmission terminal having at least one antenna of a multi-input multi-output (MIMO) system are provided. The method includes: measuring inter-stream interference of a plurality of streams; measuring inter-user interference of a plurality of users; and determining the transmission power based on the inter-stream interference and the inter-user interference, wherein the transmission power is determined using an iterative water-filling algorithm in which the Karush-Kuhn-Tucker (KKT) system is iteratively applied to all of the plurality of streams and all of the plurality of users. According to the present invention, several receive antennas are mounted in the MIMO system, thereby making it possible to receive multiple streams. In addition, when the multiple streams are received, transmission power may be allocated to each transmission stream.
摘要翻译：提供一种用于在具有多输入多输出（MIMO）系统的至少一个天线的传输终端中分配传输功率的方法和装置。该方法包括：测量多个流的流间干扰; 测量多个用户的用户间干扰; 以及基于所述流间干扰和所述用户间干扰来确定所述传输功率，其中，所述传输功率是使用迭代注水算法确定的，其中所述Karush-Kuhn-Tucker（KKT）系统被迭代地应用于多个流和所有多个用户。根据本发明，在MIMO系统中安装多个接收天线，从而可以接收多个流。此外，当接收到多个流时，可以将发送功率分配给每个传输流。

2. 发明授权

US08761061B2 Apparatus and method for transmitting/receiving data in communication system 有权
标题翻译：在通信系统中发送/接收数据的装置和方法
公开(公告)号：US08761061B2
公开(公告)日：2014-06-24
申请号：US13336832
申请日：2011-12-23
申请人： In-Kyeong Choi , Sok-Kyu Lee
发明人： In-Kyeong Choi , Sok-Kyu Lee
IPC分类号： H04B7/00
CPC分类号： H04B7/0452 , H04L25/03955 , H04L25/03961
摘要： Disclosed is an apparatus for transmitting data in a communication system, including: a receiving unit configured to receive signals from multi-users by a multi-user-multi input multi output (MIMO) scheme and acquire channel information from the users; a calculation unit configured to calculate precoding vectors for the users using the channel information; a precoding unit configured to precode data of the users using the precoding vectors; and a transmitting unit configured to transmit the precoded data to users by the multi user-MIMO scheme.
摘要翻译：公开了一种用于在通信系统中发送数据的装置，包括：接收单元，被配置为通过多用户多输入多输出（MIMO）方案从多用户接收信号，并从用户获取信道信息; 计算单元，被配置为使用所述信道信息来计算用户的预编码向量; 预编码单元，被配置为使用所述预编码向量来对所述用户的数据进行预编码; 以及发送单元，被配置为通过多用户MIMO方案向用户发送预编码的数据。

3. 发明申请

US20130266054A1 METHOD AND APPARATUS FOR ALLOCATING TRANSMISSION POWER IN MULTI INPUT MULTI OUTPUT SYSTEM 有权
标题翻译：用于在多输入多输出系统中分配传输功率的方法和装置
公开(公告)号：US20130266054A1
公开(公告)日：2013-10-10
申请号：US13620517
申请日：2012-09-14
申请人： In Kyeong CHOI , Sok Kyu LEE
发明人： In Kyeong CHOI , Sok Kyu LEE
IPC分类号： H04W52/24 , H04B17/00
CPC分类号： H04W52/243 , H04B7/0443 , H04W52/42
摘要： A method and apparatus for allocating transmission power in a transmission terminal having at least one antenna of a multi-input multi-output (MIMO) system are provided. The method includes: measuring inter-stream interference of a plurality of streams; measuring inter-user interference of a plurality of users; and determining the transmission power based on the inter-stream interference and the inter-user interference, wherein the transmission power is determined using an iterative water-filling algorithm in which the Karush-Kuhn-Tucker (KKT) system is iteratively applied to all of the plurality of streams and all of the plurality of users. According to the present invention, several receive antennas are mounted in the MIMO system, thereby making it possible to receive multiple streams. In addition, when the multiple streams are received, transmission power may be allocated to each transmission stream.
摘要翻译：提供一种用于在具有多输入多输出（MIMO）系统的至少一个天线的传输终端中分配传输功率的方法和装置。该方法包括：测量多个流的流间干扰; 测量多个用户的用户间干扰; 以及基于所述流间干扰和所述用户间干扰来确定所述传输功率，其中，所述传输功率是使用迭代注水算法确定的，其中所述Karush-Kuhn-Tucker（KKT）系统被迭代地应用于多个流和所有多个用户。根据本发明，在MIMO系统中安装多个接收天线，从而可以接收多个流。此外，当接收到多个流时，可以将发送功率分配给每个传输流。

4. 发明授权

US08107514B2 Decoding method for space-time encoding transmission scheme in with multiple input multiple output system and receiving apparatus for using the method 有权
标题翻译：用于多输入多输出系统的空时编码传输方案的解码方法和使用该方法的接收装置
公开(公告)号：US08107514B2
公开(公告)日：2012-01-31
申请号：US11721110
申请日：2005-12-09
申请人： Seung-Joon Lee , Dong-Seung Kwon , Seong-Rag Kim , In-Kyeong Choi
发明人： Seung-Joon Lee , Dong-Seung Kwon , Seong-Rag Kim , In-Kyeong Choi
IPC分类号： H04B1/38
CPC分类号： H04L25/0208 , H04L1/0631 , H04L1/0668
摘要： A receiver according to an exemplary embodiment of the present invention receives a transmitted signal, converts the signal to a predetermined symbol, and estimates channel information including a channel gain of a channel of the transmitted signal. In addition, the receiver generates an intermediate processing value for decoding the signal based on the estimated channel information and the symbol, and normalizes the intermediate processing value to the channel gain to generate a reference value. The generated reference value is used for a soft-decision value for decoding the signal. In addition, when the signal is decoded by using a hard-decision value, a constellation point value that is closest to the reference values is generated and set as the hard-decision value.
摘要翻译：根据本发明的示例性实施例的接收机接收发送信号，将该信号转换成预定符号，并且估计包括发送信号的信道的信道增益的信道信息。此外，接收器基于估计的信道信息和符号生成用于对信号进行解码的中间处理值，并且将中间处理值归一化为信道增益以生成参考值。生成的参考值用于解码信号的软判决值。此外，当通过使用硬判决值来解码信号时，生成最接近参考值的星座点值并将其设置为硬判定值。

5. 发明授权

US07889805B2 Smart antenna system and method thereof for forming uplink eigenbeam of OFDM/TDD 有权
标题翻译：智能天线系统及其形成OFDM / TDD上行固有光束的方法
公开(公告)号：US07889805B2
公开(公告)日：2011-02-15
申请号：US11579722
申请日：2004-11-10
申请人： Seong-Rag Kim , In-Kyeong Choi , Dong-Seung Kwon , Seung-Ku Hwang
发明人： Seong-Rag Kim , In-Kyeong Choi , Dong-Seung Kwon , Seung-Ku Hwang
IPC分类号： H04B7/02
CPC分类号： H04B7/0413 , H04B7/0617 , H04B7/0619 , H04B7/086 , H04L5/023 , H04L5/1484 , H04L25/0228 , H04L25/0248 , H04L27/2647
摘要： A mobile station transmitting and receiving method and a corresponding mobile station transmitter and receiver of a smart antenna system for forming uplink eigenbeams of the OFDM/TDD (orthogonal frequency division multiplex/time division duplex), wherein OFDM symbols are received from a base station through a downlink via multiple antennas (250) and an FFT (fast Fourier transform) is performed on the received OFDM symbols by the FFT units (270). By means of a channel estimator (290) the channels are estimated and a beam weight generator (310) generates respective beam weights from the channels of the respective pilot tones of the respective subcarriers according to the channel estimation result. A beam weight multiplier (230) forms the uplink beam by multiplying the respective beam weights with the output of the signal repeater (220) and IFFT units (240) generate respective OFDM symbols which are transmitted via multiple antennas (250) through an uplink.
摘要翻译：一种用于形成OFDM / TDD（正交频分复用/时分双工）的上行固有光束的智能天线系统的移动台发射和接收方法和相应的移动台发射机和接收机，其中从基站通过通过FFT单元（270）对所接收的OFDM符号执行经由多个天线（250）和FFT（快速傅里叶变换）的下行链路。通过信道估计器（290），估计信道，并且波束权重发生器（310）根据信道估计结果从相应子载波的相应导频音调的信道生成相应的波束权重。波束权重乘法器（230）通过将各个波束权重与信号中继器（220）的输出相乘来形成上行链路波束，并且IFFT单元（240）生成经由多个天线（250）经由上行链路发送的各个OFDM符号。

6. 发明申请

US20100189002A1 MULTIPLE BEAMFORMING METHOD AND APPARATUS 有权
标题翻译：多波束成像方法和装置
公开(公告)号：US20100189002A1
公开(公告)日：2010-07-29
申请号：US12677630
申请日：2008-09-11
申请人： In-Kyeong Choi , Dong Seung Kwon , Ji Won Kang , Chung Yong Lee
发明人： In-Kyeong Choi , Dong Seung Kwon , Ji Won Kang , Chung Yong Lee
IPC分类号： H04J1/16 , H04B7/216
CPC分类号： H04B7/0617
摘要： The present invention relates to a beamforming method and apparatus. A beamforming method for use in a base station for transmitting a plurality of streams through a plurality of antennas includes: receiving feedback information including information on a first codeword selected from a codebook including a plurality of codewords from each of a plurality of user terminals; grouping the plurality of user terminals by use of the feedback information from each user terminal; determining a user terminal to which a plurality of streams will be assigned of the plurality of user terminals, and determining a second codeword to be used for beamforming from the codebook by use of the feedback information of each user terminal and grouping information; and multiplying data to be transmitted through the plurality of steams by the second codeword and a unitary matrix.
摘要翻译：本发明涉及一种波束形成方法和装置。一种在基站中用于通过多个天线发送多个流的波束成形方法包括：从多个用户终端中的每一个接收包括从包括多个码字的码本中选择的第一码字的信息的反馈信息; 通过使用来自每个用户终端的反馈信息对多个用户终端进行分组; 确定将分配多个用户终端的多个流的用户终端，以及通过使用每个用户终端的反馈信息和分组信息来确定要用于来自码本的波束形成的第二码字; 以及将通过所述多个蒸汽发送的数据乘以所述第二码字和酉矩阵。

7. 发明授权

US07746936B2 Method and device for optimizing codebook for quantized precoder by using steepest descent algorithm 有权
标题翻译：使用最陡下降算法优化量化预编码码本的方法和装置
公开(公告)号：US07746936B2
公开(公告)日：2010-06-29
申请号：US11743147
申请日：2007-05-02
申请人： Dong-Seung Kwon , Young-Seog Song , In-Kyeong Choi , Chung-Yong Lee , Myeong-Cheol Shin , Myoung-Seog Kim , Seung-Joon Lee
发明人： Dong-Seung Kwon , Young-Seog Song , In-Kyeong Choi , Chung-Yong Lee , Myeong-Cheol Shin , Myoung-Seog Kim , Seung-Joon Lee
IPC分类号： H04B14/04 , H04L7/02
CPC分类号： H04B7/0658 , H04B7/0634 , H04B7/0639
摘要： In a method for optimizing a codebook including a quantized channel between a base station transmitter and a portable terminal: a) select the codebook to be optimized; b) a steepest descent algorithm is applied to respective codewords of the codebook selected in a), wherein the codewords are transformed so that a correlation between the codewords is minimized, and a function indicating the correlation between the codewords is differentiated and is multiplied by a predetermined step size and is used for a parameter for generating a new codeword in the steepest descent algorithm; c) it is determined whether the codebook including the codewords transformed in b) is optimized; and d) the codebook is stored when it is determined in c) that the codebook is optimized.
摘要翻译：一种用于优化包括基站发射机和便携式终端之间的量化信道的码本的方法：a）选择要优化的码本; b）将最陡下降算法应用于在a）中选择的码本的相应码字，其中对码字进行变换，使得码字之间的相关性最小化，并且指示码字之间的相关性的函数被区分，并乘以用于在最速下降算法中生成新码字的参数; c）确定包括在b）中变换的码字的码本是否被优化; 以及d）当在c）中确定码本被优化时，存储码本。

8. 发明申请

US20080225975A1 Structured Space-Time Code Achieving the Full Diversity and Full Rate and Generating Method Thereof, and Multi-Input Multi-Output System 有权
标题翻译：实现全分集和全速率及其生成方法的结构化时空码，以及多输入多输出系统
公开(公告)号：US20080225975A1
公开(公告)日：2008-09-18
申请号：US11574725
申请日：2005-02-28
申请人： Seung-Joon Lee , Choong-Il Yeh , Dong-Seung Kwon , Seung-Ku Hwang , Hyoung-Soo Lim , In-Kyeong Choi , Jong-Ee Oh , Kwang-Jae Lim , Seong-Rag Kim , Young-Seog Song , Yu-Ro Lee , Seong-Keun Oh , Moon-Ii Lee
发明人： Seung-Joon Lee , Choong-Il Yeh , Dong-Seung Kwon , Seung-Ku Hwang , Hyoung-Soo Lim , In-Kyeong Choi , Jong-Ee Oh , Kwang-Jae Lim , Seong-Rag Kim , Young-Seog Song , Yu-Ro Lee , Seong-Keun Oh , Moon-Ii Lee
IPC分类号： H04B7/02
CPC分类号： H04B7/02 , H04B7/0697 , H04L1/0612
摘要： A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot.
摘要翻译：用于发射机的空时码将多个数据符号发送到MIMO系统中的接收机，所述时空码包括用于发送对应于发射次数的乘积的数据符号量的码字矩阵天线和一个块周期内的空间多路复用率，其中行索引表示通过不同发射天线发射的组合信号，列索引指示对应于发射天线数的时隙，并且其中分配给每个发射的数据符号数代码块中的天线对应于空间复用速率，并且通过在每个时隙对每个发射天线的不同组合系数组合数据符号，并且同时通过不同的发射天线发射，并且每个发射天线发射不同的数据符号集合在每个时间段

9. 发明授权

US07027491B2 Interference cancellation receiver for use in a CDMA system 失效
公开(公告)号：US07027491B2
公开(公告)日：2006-04-11
申请号：US10022731
申请日：2001-12-20
申请人： In-Kyeong Choi , Seong Rag Kim
发明人： In-Kyeong Choi , Seong Rag Kim
IPC分类号： H04B1/69 , H04B1/707 , H04B1/713
CPC分类号： H04B1/71075
摘要： An interference cancellation receiver reduces the multiple access interference in a CDMA system. The receiver includes a demodulator for receiving a residual signal or a received signal from a calling terminal as an over-sample unit baseband spread signal and down-sampling the baseband spread signal on a chip basis to output a demodulation signal, a regenerator for performing a bit decision for the demodulation signal, regenerating signals through the channelization and scrambling and converting the regenerated signals to signals on the over-sample basis, an adder for summing up the over-sample unit signals, a filter for filtering the summed-up signal to output a band spread signal, a subtractor for subtracting the band spread signal from the received signal to output the residual signal and a delay for keeping timing with the residual signal by delaying the chip unit signals outputted from the regenerator.

10. 发明授权

US06741634B1 Apparatus and method of adaptive weighted parallel interference cancellation system for CDMA 有权
标题翻译： CDMA自适应加权并行干扰消除系统的装置与方法
公开(公告)号：US06741634B1
公开(公告)日：2004-05-25
申请号：US09491079
申请日：2000-01-21
申请人： Seong Rag Kim , Sugbong Kang , In Kyeong Choi , Jeong Goo Lee
发明人： Seong Rag Kim , Sugbong Kang , In Kyeong Choi , Jeong Goo Lee
IPC分类号： H04L2730
CPC分类号： H04L25/03057 , H04L2025/03414 , H04L2025/03611
摘要： An adaptive weighted parallel interference cancellation system for CDMA that decreases MAI (multiple access interference) and thereby increases general performance, including K stages for iterative cancellation of MAI in a received signal of a user. Each stage includes a detector, a regenerator, and a subtractor. The detector is configured to determine a tentative bit decision from a despread signal. The regenerator that is connected with the detector in parallel is configured to spread an unmodulated signal, multiply a channel phase, and multiply by the output of the detector. The subtractor uses weighted signals that are adjusted user by user and according to changing environments.
摘要翻译：一种用于CDMA的自适应加权并行干扰消除系统，其降低了MAI（多址干扰），从而提高了一般性能，包括在用户的接收信号中迭代消除MAI的K个级。每个阶段包括检测器，再生器和减法器。检测器被配置为从解扩信号确定暂定位决定。与检测器并联连接的再生器被配置为扩展未调制的信号，乘以通道相位，并乘以检测器的输出。减法器使用由用户调整的加权信号，并根据不断变化的环境。

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