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11. 发明授权

US08687750B1 Signal detection with adjustable number of interfering signals 失效
标题翻译：信号检测与可调数量的干扰信号
公开(公告)号：US08687750B1
公开(公告)日：2014-04-01
申请号：US13159931
申请日：2011-06-14
申请人： Jungwon Lee , Jiwoong Choi , Yakun Sun
发明人： Jungwon Lee , Jiwoong Choi , Yakun Sun
IPC分类号： H03D1/04
CPC分类号： H04B1/10 , H04L25/03891 , H04L2025/03426
摘要： Systems, methods, and other embodiments associated with signal detection with an adjustable number of interfering signals. According to one embodiment an apparatus includes an interferer counter, a detection method selector, and a signal detector. The interferer counter is configured to identify a number of active interfering signals in a received signal. The detection method selector is configured to select a signal detection method based, at least in part, on the number of active interfering signals identified by the interferer counter. The signal detector is configured to process the received signal according to the signal detection method selected by the detection method selector to detect an intended signal in the received signal.
摘要翻译：与可调节数量的干扰信号的信号检测相关的系统，方法和其它实施例。根据一个实施例，一种装置包括干扰计数器，检测方法选择器和信号检测器。干扰计数器被配置为识别接收信号中的多个有源干扰信号。检测方法选择器被配置为至少部分地基于由干扰计数器识别的有源干扰信号的数量来选择信号检测方法。信号检测器被配置为根据由检测方法选择器选择的信号检测方法处理接收信号，以检测接收信号中的预期信号。

12. 发明授权

US08559543B1 Soft sphere decoder for MIMO maximum likelihood demodulation 有权
公开(公告)号：US08559543B1
公开(公告)日：2013-10-15
申请号：US12891377
申请日：2010-09-27
申请人： Jungwon Lee , Jiwoong Choi
发明人： Jungwon Lee , Jiwoong Choi
IPC分类号： H04L1/02
CPC分类号： H04B7/0413 , H04L25/03242
摘要： Methods and apparatus are provided for soft-decision maximum likelihood demodulation to decode a data vector transmitted in a multiple-input multiple-output (MIMO) communications channel. Soft-decision demodulators are disclosed that implement sphere decoding to reduce complexity of demodulation while preserving optimal performance. Candidate signal values associated with the transmitted data vector may be obtained and partitioned into signal bit groups. A sphere search may be performed over the candidate signal values within a search radius value to determine a smallest distance metric for each signal bit group. The search radius value may be updated based on a current smallest distance metric for each signal bit group. A log-likelihood ratio (LLR) may be computed from the determined smallest distance metrics for each signal bit group using a soft-decision demodulator.

13. 发明授权

US08437434B1 Multi-stream maximum-likelihood demodulation based on bitwise constellation partitioning 有权
标题翻译：基于逐位星座分割的多流最大似然解调
公开(公告)号：US08437434B1
公开(公告)日：2013-05-07
申请号：US13567960
申请日：2012-08-06
申请人： Jungwon Lee , Jiwoong Choi , Hui-Ling Lou
发明人： Jungwon Lee , Jiwoong Choi , Hui-Ling Lou
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L25/03203 , H04L25/03331
摘要： A plurality of received data symbols is received, and a first received data symbol is selected from the plurality of received data symbols. A plurality of global optimum candidate values of a first estimated transmitted data symbol corresponding to the first received data symbol is determined for different given candidate values of second estimated transmitted data symbols corresponding to second received data symbols. Likelihood values for bits corresponding to the second estimated transmitted data symbols are calculated using the plurality of global optimum candidate values. All possible values of the first estimated transmitted data symbol are grouped into two or more bit groups, and a plurality of local optimum candidate values are determined for different bit groups. Likelihood values for bits corresponding to the first estimated transmitted data symbol are calculated using the plurality of global optimum candidate values and the plurality of local optimum candidate values.
摘要翻译：接收多个接收到的数据符号，并且从多个接收的数据符号中选择第一接收数据符号。针对对应于第二接收数据符号的第二估计发送数据符号的不同给定候选值确定与第一接收数据符号对应的第一估计发送数据符号的多个全局最优候选值。使用多个全局最优候选值来计算与第二估计发送数据符号对应的位的似然值。第一估计发送数据符号的所有可能值被分组为两个或多个位组，并且针对不同位组确定多个局部最优候选值。使用多个全局最优候选值和多个局部最优候选值来计算与第一估计发送数据符号对应的位的似然值。

14. 发明授权

US08379508B1 Systems and methods for computing a relative path delay between multiple transmission sources 有权
标题翻译：用于计算多个传输源之间的相对路径延迟的系统和方法
公开(公告)号：US08379508B1
公开(公告)日：2013-02-19
申请号：US12835904
申请日：2010-07-14
申请人： Jungwon Lee , Jiwoong Choi , Jihwan P. Choi
发明人： Jungwon Lee , Jiwoong Choi , Jihwan P. Choi
IPC分类号： H04J11/00 , H04J3/06
CPC分类号： H04W40/38 , H04J11/0063 , H04L25/0202 , H04L27/2601
摘要： Systems and methods are provided for computing a relative path delay between multiple transmitting source to select a source that is closest to a receiving device. Preamble sequences unique to each source are received by a receiving device. The receiving devices determines based on a channel estimation or differential algorithm which transmitting source is closer to the receiving device. The channel estimation algorithm computes the path delay based on a channel estimation correlation at different preamble sequence indices. The differential algorithm computes the path delay based on a correlation between the received and transmitted preamble sequences at different preamble sequence indices. The receiving device selects the closer of the multiple sources to be the source from which to extract data.
摘要翻译：提供的系统和方法用于计算多个发送源之间的相对路径延迟，以选择最接近接收设备的源。每个源独有的前导序列由接收设备接收。接收装置基于信道估计或差分算法确定发射源更靠近接收装置。信道估计算法基于在不同前同步码序列索引处的信道估计相关性来计算路径延迟。差分算法基于在不同前同步码序列索引处的接收和发送前同步码序列之间的相关性来计算路径延迟。接收设备选择要从中提取数据的源的更多的源。

15. 发明授权

US09564980B2 Mobile telecommunication system with noise ratio estimation mechanism and method of operation thereof 有权
标题翻译：具有噪声比估计机构的移动通信系统及其操作方法
公开(公告)号：US09564980B2
公开(公告)日：2017-02-07
申请号：US13590567
申请日：2012-08-21
申请人： Insoo Hwang , Heejin Roh , Jungwon Lee , Inyup Kang
发明人： Insoo Hwang , Heejin Roh , Jungwon Lee , Inyup Kang
IPC分类号： H04W4/00 , H04B17/336 , H04B17/26 , H04B17/345
CPC分类号： H04B17/336 , H04B17/26 , H04B17/345
摘要： A method of operation of a mobile telecommunication system includes: measuring a received reference signal; removing a guard portion from the received reference signal; determining a noise variance estimate from both a noise region of the received reference signal and a noise sample in a signal region of the received reference signal, or calculating a dispersion power of a noise region of the received reference signal and determining the noise variance estimate based on at least a dispersion power; and calculating a signal to noise ratio from the noise variance estimate for adjusting a receiver device.
摘要翻译：移动电信系统的操作方法包括：测量接收的参考信号; 从所接收的参考信号中去除保护部分; 从接收到的参考信号的噪声区域和所接收的参考信号的信号区域中的噪声样本两者中确定噪声方差估计，或者计算所接收的参考信号的噪声区域的色散功率，并基于至少分散功率; 以及根据用于调整接收机设备的噪声方差估计来计算信噪比。

16. 发明授权

US08897406B2 Communication system with iterative detector and decoder and method of operation thereof 有权
标题翻译：具有迭代检测器和解码器的通信系统及其操作方法
公开(公告)号：US08897406B2
公开(公告)日：2014-11-25
申请号：US13460630
申请日：2012-04-30
申请人： Hyukjoon Kwon , Jungwon Lee , Inyup Kang
发明人： Hyukjoon Kwon , Jungwon Lee , Inyup Kang
IPC分类号： H04N1/10
CPC分类号： H04J11/004 , H04L25/067
摘要： A method of operation of a communication system includes: receiving an input signal having an input primary codeword and an input parallel codeword; calculating a primary codeword signal by removing a parallel soft information average of the input parallel codeword from the input signal; filtering a residual parallel interference of the input parallel codeword from the primary codeword signal with a primary whitening filter to generate a primary codeword estimation of the input primary codeword; and calculating a primary detected soft information for the primary codeword estimation for communicating with a device.
摘要翻译：一种通信系统的操作方法包括：接收具有输入主码字和输入并行码字的输入信号; 通过从输入信号去除输入并行码字的并行软信息平均来计算主码字信号; 将来自主码字信号的输入并行码字的残留并行干扰与主白化滤波器进行滤波，以产生输入主码字的主码字估计; 以及计算用于与所述设备进行通信的所述主码字估计的主检测软信息。

17. 发明授权

US08817643B1 Method and apparatus for monitoring a radio link in a communication system 有权
标题翻译：用于监视通信系统中的无线电链路的方法和装置
公开(公告)号：US08817643B1
公开(公告)日：2014-08-26
申请号：US13155985
申请日：2011-06-08
申请人： Yakun Sun , Jungwon Lee
发明人： Yakun Sun , Jungwon Lee
IPC分类号： H04W24/04
CPC分类号： H04W24/04 , H04W24/08
摘要： In a method for monitoring a radio link in a wireless communication system, a plurality of short term radio link quality values based on one or more measured channel matrices is determined. A long term radio link quality value is determined from the plurality of the short term radio link quality values. Additionally, radio link failure or recovery is indicated, when appropriate, based on the long term radio link quality value.
摘要翻译：在无线通信系统中监视无线电链路的方法中，确定基于一个或多个测量信道矩阵的多个短期无线电链路质量值。从多个短期无线电链路质量值确定长期无线电链路质量值。另外，根据长期的无线电链路质量值，在适当的情况下指示无线电链路故障或恢复。

18. 发明授权

US08718166B2 Maximal ratio combining of equalized symbols for MIMO systems with HARQ and/or repetition coding 有权
标题翻译：用于MIMO系统的均衡符号与HARQ和/或重复编码的最大比组合
公开(公告)号：US08718166B2
公开(公告)日：2014-05-06
申请号：US11834599
申请日：2007-08-06
申请人： Jungwon Lee , Woong Jun Jang , Hui-Ling Lou
发明人： Jungwon Lee , Woong Jun Jang , Hui-Ling Lou
IPC分类号： H04B7/02
CPC分类号： H04L27/01 , H04B7/0413 , H04B7/0697 , H04B7/0845 , H04B7/0857 , H04L1/08 , H04L1/1816 , H04L1/1845 , H04L2025/03426
摘要： Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors based on the same transmitted vector. The receiver linearizes each received signal vector using one or more zero-forcing, MMSE, or other suitable linear equalizers. The components of the equalized signal vectors may be combined using maximum-ratio combining to form the components of a combined equalized signal vector. The components of the combined equalized signal vector may then be decoded individually using a linear decoder.
摘要翻译：提供了用于对多输入多输出（MIMO）系统中的信号向量进行解码的系统和方法，其中接收机已经基于相同的传输向量接收了一个或多个信号向量。接收机使用一个或多个零强制，MMSE或其他合适的线性均衡器来线性化每个接收信号向量。可以使用最大比合并来组合均衡的信号向量的分量以形成组合的均衡信号向量的分量。然后可以使用线性解码器单独地解码组合的均衡信号向量的分量。

19. 发明授权

US08699601B1 Distance-level combining for MIMO systems with HARQ and/or repetition coding 有权
公开(公告)号：US08699601B1
公开(公告)日：2014-04-15
申请号：US11833827
申请日：2007-08-03
申请人： Jungwon Lee , Woong Jun Jang
发明人： Jungwon Lee , Woong Jun Jang
IPC分类号： H04B7/02
CPC分类号： H04B1/10 , H04B7/0413 , H04L1/0052 , H04L1/0054 , H04L1/08 , H04L1/1816 , H04L1/1845 , H04L25/067
摘要： Systems and methods are provided for decoding signal vectors in multiple-input multiple-output (MIMO) systems, where the receiver has received one or more signal vectors from the same transmitted vector. For each received signal vector, the receiver evaluates a decoding metric using each possible value of the transmitted signal vector to produce a set of distances. The receiver then combines distances from across the received signal vectors to produce a combined distance associated with each possible value of the transmitted signal vector. Using the combined distances, the receiver may choose among the possible values of the transmit signal vector to determine the actual transmit signal vector.

20. 发明授权

US08675755B1 Method and apparatus for jointly decoding independently encoded signals 失效
标题翻译：用于联合解码独立编码信号的方法和装置
公开(公告)号：US08675755B1
公开(公告)日：2014-03-18
申请号：US12830100
申请日：2010-07-02
申请人： Jungwon Lee , Jihwan P. Choi
发明人： Jungwon Lee , Jihwan P. Choi
IPC分类号： H04L5/12
CPC分类号： H04L1/0048 , H04L1/0041 , H04L25/03248 , H04L27/3488 , H04L2001/0093
摘要： A received signal includes a plurality of user signals, the plurality of user signals including at least a first user signal and a second user signal. The first user signal corresponds to first user data that has been modulated independently of second user data corresponding to the second user signal. At least one of the first user signal or the second user signal is encoded with a finite state machine encoder independently of the other of the first user signal and the second user signal. The received signal is demodulated, wherein demodulating the received signal includes calculating distances between (i) each transmit symbol in the received signal and (ii) expected symbol values, wherein each expected symbol value corresponds to user data for multiple users including the first user and the second user. User data in the received signal including the first user data and the second user data is decoded based on the calculated distances.
摘要翻译：接收到的信号包括多个用户信号，所述多个用户信号至少包括第一用户信号和第二用户信号。第一用户信号对应于已经独立于对应于第二用户信号的第二用户数据被调制的第一用户数据。第一用户信号或第二用户信号中的至少一个与独立于第一用户信号和第二用户信号中的另一个的有限状态机编码器一起编码。所接收的信号被解调，其中解调接收的信号包括计算（i）接收信号中的每个发送符号与（ii）预期符号值之间的距离，其中每个期望符号值对应于包括第一用户的多个用户的用户数据，第二个用户。基于计算出的距离对包括第一用户数据和第二用户数据的接收信号中的用户数据进行解码。

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