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71. 发明授权

US08718675B1 Positioning request in paging messages of wireless communication systems 失效
标题翻译：无线通信系统寻呼消息中的定位请求
公开(公告)号：US08718675B1
公开(公告)日：2014-05-06
申请号：US13165462
申请日：2011-06-21
申请人： Jihwan P. Choi , Jungwon Lee
发明人： Jihwan P. Choi , Jungwon Lee
IPC分类号： H04W24/00
CPC分类号： H04W4/02 , H04W64/00 , H04W68/005 , H04W68/02
摘要： Systems and techniques relating to wireless communications are described. A described technique includes generating a paging message for a wireless communication device, the paging message can include a positioning request; transmitting the paging message to the wireless communication device; and receiving, during a connection establishment process, a connection message from the wireless communication device. The connection message can include a positioning response that is responsive to the positioning request.
摘要翻译：描述与无线通信相关的系统和技术。所描述的技术包括为无线通信设备生成寻呼消息，寻呼消息可以包括定位请求; 将所述寻呼消息发送到所述无线通信设备; 以及在连接建立过程期间从所述无线通信设备接收连接消息。连接消息可以包括响应于定位请求的定位响应。

72. 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。

73. 发明授权

US08665694B2 Pilot design for universal frequency reuse in cellular orthogonal frequency-division multiplexing systems 有权
标题翻译：蜂窝正交频分复用系统中通用频率复用的导频设计
公开(公告)号：US08665694B2
公开(公告)日：2014-03-04
申请号：US12189437
申请日：2008-08-11
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04J1/12
CPC分类号： H04L5/0048 , H04L5/0062 , H04L5/0073
摘要： Systems and methods are provided for transmitting information between an intended source and a receiver to minimize co-channel interference from at least one interfering source. Pilot subcarriers and data subcarriers may be broadcast from an intended source arid at least one interfering source. The pilot subcarriers may be shared across base stations or distributed among base stations in frequency, in time, or both. In addition, the frequency reuse factor of the pilot subcarriers may be different than the frequency reuse factor of the data subcarriers. A receiver receives a composite signal that corresponds with an intended signal from an intended source and an interfering signal from at least one interfering source. The portion of the received signal that corresponds to the intended signal may be recovered by the receiver based on the broadcast of the pilot subcarriers.
摘要翻译：提供了系统和方法，用于在预期的源和接收机之间传输信息以最小化来自至少一个干扰源的同信道干扰。导频子载波和数据子载波可以从预期的源和至少一个干扰源广播。导频子载波可以在基站之间共享或者在频率，时间上或两者中分布在基站之间。此外，导频子载波的频率重用因子可能不同于数据子载波的频率重用因子。接收机接收来自预期源的预期信号和来自至少一个干扰源的干扰信号的复合信号。对应于预期信号的接收信号的部分可以由接收机基于导频子载波的广播来恢复。

74. 发明授权

US08654910B1 Co-channel interference cancellation with multiple receive antennas for BICM 有权
标题翻译：用于BICM的多个接收天线的同信道干扰消除
公开(公告)号：US08654910B1
公开(公告)日：2014-02-18
申请号：US13570750
申请日：2012-08-09
申请人： Jungwon Lee , Rohit U. Nabar , Hui-Ling Lou
发明人： Jungwon Lee , Rohit U. Nabar , Hui-Ling Lou
IPC分类号： H03D1/04
CPC分类号： H04L25/0206 , H04L25/0228 , H04L25/03331
摘要： Apparatus and methods are provided for computing soft information at a receiver having a plurality of receive antennas. The receiver may be a mobile station or a base station, and can receive a signal vector that includes an intended signal from a first source as well as interfering signals from one or more other, interfering sources. The receiver can determine modulation information, such as the modulation scheme, used by each of the interfering sources. The mobile station can also estimate channel information, such as channel gain information, associated with each interfering source. Using the modulation and channel information, the receiver can compute soft information, such as a log-likelihood ratio. In some embodiments, the receiver can adaptively determine which interference sources and which receive antennas to use when computing the soft information.
摘要翻译：提供了用于在具有多个接收天线的接收机处计算软信息的装置和方法。接收机可以是移动站或基站，并且可以接收包括来自第一源的预期信号以及来自一个或多个其它干扰源的干扰信号的信号向量。接收机可以确定由每个干扰源使用的调制方式，例如调制方案。移动站还可以估计与每个干扰源相关联的信道信息，例如信道增益信息。使用调制和信道信息，接收机可以计算软信息，例如对数似然比。在一些实施例中，当计算软信息时，接收机可以自适应地确定哪些干扰源和哪些接收天线使用。

75. 发明授权

US08644262B1 Method and apparatus for estimating a channel quality indicator (CQI) for multiple input multiple output (MIMO) systems 有权
标题翻译：用于估计多输入多输出（MIMO）系统的信道质量指示符（CQI）的方法和装置
公开(公告)号：US08644262B1
公开(公告)日：2014-02-04
申请号：US13112009
申请日：2011-05-20
申请人： Yakun Sun , Adina Matache , Jungwon Lee
发明人： Yakun Sun , Adina Matache , Jungwon Lee
IPC分类号： H04W4/00
CPC分类号： H04B7/0456 , H04B7/0413 , H04B7/0632 , H04B7/066 , H04B7/0671 , H04B7/0673 , H04B7/0678 , H04B7/068 , H04B7/0691 , H04B17/336 , H04L1/0026 , H04L1/0029 , H04L1/0036 , H04L1/06 , H04L5/0023
摘要： Systems and methods are provided for determining a channel quality indicator (CQI) in a transmission system associated with a diversity transmission scheme. A plurality of independent diversity branches are identified in the diversity transmission scheme. Each one of the independent diversity branches may correspond to a different portion of the effective channel and may include any suitable combination of frequency, time, and/or spatial components of the effective channel or of any wired or wireless paths or combinations of the same. An effective Signal-to-Noise Ratio (SNR) value is computed for each one of the identified independent diversity branches. The computed effective SNR values are combined for the identified independent diversity branches to generate a CQI value.
摘要翻译：提供了用于确定与分集传输方案相关联的传输系统中的信道质量指示符（CQI）的系统和方法。在分集传输方案中识别出多个独立分集分支。独立分集分支中的每一个可以对应于有效信道的不同部分，并且可以包括有效信道或任何有线或无线路径或其组合的频率，时间和/或空间分量的任何合适的组合。为所识别的独立分集分支中的每一个计算有效的信噪比（SNR）值。为所识别的独立分集分支组合计算出的有效SNR值以产生CQI值。

76. 发明授权

US08630379B1 Methods and apparatus for multiple input multiple output (MIMO) successive interference cancellation (SIC) 有权
标题翻译：用于多输入多输出（MIMO）连续干扰消除（SIC）的方法和装置
公开(公告)号：US08630379B1
公开(公告)日：2014-01-14
申请号：US13164111
申请日：2011-06-20
申请人： Yakun Sun , Jungwon Lee
发明人： Yakun Sun , Jungwon Lee
IPC分类号： H03D1/04
CPC分类号： H04B7/0456 , H04B1/10 , H04B7/0413 , H04J11/004 , H04L1/0048 , H04L25/03305
摘要： Systems and methods are provided for determining a successive interference cancellation (SIC) decoding ordering in a multiple input multiple output transmission (MIMO) system. Multiple decoding orderings for received codewords are identified. A performance objective, such as total throughput or total probability of decoding, is computed for each one of the orderings based on the position of the codewords in the ordering. A globally optimal ordering is found that maximizes the performance objective over the multiple decoding orderings.
摘要翻译：提供了用于确定多输入多输出传输（MIMO）系统中的连续干扰消除（SIC）解码排序的系统和方法。识别接收码字的多个解码顺序。基于排序中的码字的位置，针对每个排序计算性能目标，例如总吞吐量或总解码概率。发现全局最优排序，使多个解码顺序的性能目标最大化。

77. 发明授权

US08630371B1 Channel estimation using linear phase estimation 有权
标题翻译：使用线性相位估计的信道估计
公开(公告)号：US08630371B1
公开(公告)日：2014-01-14
申请号：US13475191
申请日：2012-05-18
申请人： Jungwon Lee , Raj M. Misra , Adina Matache , Konstantinos Sarrigeorgidis
发明人： Jungwon Lee , Raj M. Misra , Adina Matache , Konstantinos Sarrigeorgidis
IPC分类号： H03K9/00
CPC分类号： H04L25/024 , H04L25/022 , H04L25/0228 , H04L27/2601 , H04L27/2657 , H04L2027/003 , H04L2027/0067 , H04L2027/0093
摘要： Systems and methods are provided for channel estimation using linear phase estimation. These systems and methods enable improved channel estimation by estimating a linear channel phase between received pilot subcarrier signals. The estimated linear phase can then be removed from the received pilot subcarrier signals. After the estimated linear phase is removed from the received pilot subcarrier signals, a channel response can be estimated. A final estimated channel response can be generated by multiplying the results of the linear channel estimation by the estimated linear phase.
摘要翻译：提供了使用线性相位估计的信道估计的系统和方法。这些系统和方法通过估计接收的导频副载波信号之间的线性信道相位来实现改进的信道估计。然后可以从接收到的导频子载波信号中去除估计的线性相位。在从接收到的导频子载波信号中去除估计的线性相位之后，可以估计信道响应。可以通过将线性信道估计的结果乘以估计的线性相位来生成最终估计的信道响应。

78. 发明申请

US20130336430A1 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：US20130336430A1
公开(公告)日：2013-12-19
申请号：US13523824
申请日：2012-06-14
申请人： Chun Kin Au Yeung , Hanju Kim , Jungwon Lee , Inyup Kang
发明人： Chun Kin Au Yeung , Hanju Kim , Jungwon Lee , Inyup Kang
IPC分类号： H04L27/00 , H03M13/09
CPC分类号： H04L25/03171 , H03M13/09 , H03M13/2957 , H03M13/2966 , H03M13/3723 , H03M13/3746 , H03M13/3753 , H03M13/6306 , H03M13/6331 , H03M13/6525 , H03M13/658 , H04L1/005 , H04L1/1829 , H04L25/03891
摘要： A method of operation of a communication system includes: retaining an a-posteriori detector-data, a detector-extrinsic-information, an a-posteriori-decoder-data, a decoder-extrinsic-value, or a combination thereof calculated from a received signal; determining an a-priori-decoder-information or an a-priori detector-information from the a-posteriori detector-data, the detector-extrinsic-information, the a-posteriori-decoder-data, the decoder-extrinsic-value, or a combination thereof; and adjusting the a-posteriori detector-data, the detector-extrinsic-information, the a-posteriori-decoder-data, the decoder-extrinsic-value, or a combination thereof using the a-priori-decoder-information or the a-priori detector-information for communicating through a device.
摘要翻译：一种通信系统的操作方法包括：从接收到的数据，保存一个后验检测器数据，一个检测器 - 外在信息，一个后验解码器数据，一个解码器 - 非本征值或其组合信号; 从后验检测器数据，检测器外在信息，后验解码器数据，解码器外在值或者解码器外在信号中确定先验解码器信息或先验检测器信息其组合; 以及使用先验解码器信息或者a-before-解码器信息调整后验检测器数据，检测器外在信息，后验解码器数据，解码器外在值或其组合，用于通过设备进行通信的先验检测器信息。

79. 发明授权

US08611480B1 Optimal decoding of transmit diversity code with varying channel characteristics 有权
公开(公告)号：US08611480B1
公开(公告)日：2013-12-17
申请号：US12055256
申请日：2008-03-25
申请人： Jungwon Lee , Rohit U. Nabar , Hui-Ling Lou
发明人： Jungwon Lee , Rohit U. Nabar , Hui-Ling Lou
IPC分类号： H04B7/10 , H04L1/02
CPC分类号： H04B7/08 , H04B1/10 , H04B7/0669 , H04B7/0845 , H04L1/0631 , H04L1/0668
摘要： Systems and methods are provided for decoding a signal vector in a transmit diversity scheme for varying channels. Information obtained in more than one symbol period are treated as a single received vector, and each of the received signal vectors may be processed to reduce the effects of varying channel characteristics. The received signal vectors may be combined by addition and decoded using a maximum-likelihood decoder. In some embodiments, the received signal vectors are processed separately and then combined. In other embodiments, the received signal vectors are combined and then processed. In some embodiments, zero-forced linear equalization techniques are used to processed the received signals. In some embodiments the signal vectors and varying channel response matrices are broken down to equivalent forms in order to simplify the processing.

80. 发明授权

US08565360B1 Dimension reduction for codebook search 有权
公开(公告)号：US08565360B1
公开(公告)日：2013-10-22
申请号：US13399553
申请日：2012-02-17
申请人： Yakun Sun , Jungwon Lee
发明人： Yakun Sun , Jungwon Lee
IPC分类号： H04L1/02
CPC分类号： H04B7/0456 , H04L1/20 , H04L5/0023 , H04L25/03343 , H04L2025/03426 , H04L2025/03808
摘要： Systems are provided for searching for a codeword from a plurality of codewords in a codebook for use in precoding, for example, as used in a multiple-input multiple-output (MIMO) transmission system. Dimension reduction techniques may be utilized to reduce the complexity and enhance the efficiency of the codebooks search. Null-spaces of an optimal codeword and codewords in a codebook may be computed. Distance values may be computed based on the null=spaces of the codewords. A codeword may be selected from the codebook based on a minimum distance value from the optimal codeword.

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