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1. 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。

2. 发明授权

US08588347B1 Systems and methods for performing efficient blind decoding at a wireless receiver 失效
标题翻译：用于在无线接收机处执行有效的盲解码的系统和方法
公开(公告)号：US08588347B1
公开(公告)日：2013-11-19
申请号：US13160971
申请日：2011-06-15
申请人： Vladan Petrovic , Yakun Sun , Jungwon Lee
发明人： Vladan Petrovic , Yakun Sun , Jungwon Lee
IPC分类号： H04L27/06
CPC分类号： H04L1/0052 , H04B7/0891 , H04L1/0046 , H04L1/0061 , H04L1/0067 , H04L1/0075 , H04L1/08 , H04L5/0053 , H04L5/0091 , H04L25/03891 , H04L27/06
摘要： Systems and methods for performing efficient blind decoding. A first plurality of decision metrics corresponding to a first repetition of periodic decoding information is stored. The first plurality of decision metrics is grouped into sequential portions. A plurality of combined versions of the sequential portions is stored into combining buffers arranged in sequence. Each combined version is associated with a different sequence of timing information. A first of the plurality of combined versions stored in a first of the combining buffers is combined with a second version of a second plurality of decision metrics that corresponds to a second repetition of the periodic decoding information. The second version is associated with timing information adjacent in the timing information sequence to the timing information associated with the first combined version. The data is decoded based on information in the combining buffers.
摘要翻译：执行高效盲解码的系统和方法。存储对应于周期性解码信息的第一次重复的第一多个决策度量。第一多个决策度量被分组成顺序部分。顺序部分的多个组合版本被存储到依次布置的组合缓冲器中。每个组合版本与不同的定时信息序列相关联。存储在组合缓冲器中的第一组合中的多个组合版本中的第一版本与对应于周期性解码信息的第二次重复的第二多个决策度量的第二版本组合。第二版本与定时信息序列相邻的定时信息与与第一组合版本相关联的定时信息相关联。基于组合缓冲器中的信息对数据进行解码。

3. 发明授权

US08451931B1 Method and apparatus for implementing transmit diversity in OFDM systems 有权
公开(公告)号：US08451931B1
公开(公告)日：2013-05-28
申请号：US13403949
申请日：2012-02-23
申请人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou , Rohit Nabar , Yakun Sun
发明人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou , Rohit Nabar , Yakun Sun
IPC分类号： H04B7/00
CPC分类号： H04L27/2627 , H04B7/0413 , H04B7/0669 , H04B7/0671 , H04L1/0625 , H04L5/0023 , H04L5/0087 , H04L25/0204 , H04L25/03159 , H04L2025/03414 , H04L2025/03426
摘要： A plurality of diagonal matrices Ci is determined, where the plurality of diagonal matrices Ci is for modifying a plurality of transmit signals to be transmitted via a plurality of transmit antennas, each diagonal matrix Ci for modifying an i-th block of sub-carriers, adjacent in frequency, in the plurality of transmit signals. The plurality of diagonal matrices Ci is used to modify the plurality of transmit signals to implement transmit diversity.

4. 发明授权

US08687751B1 Multiple-input multiple-output receivers using successive interference cancellation based on cyclic redundancy check 有权
标题翻译：使用基于循环冗余校验的连续干扰消除的多输入多输出接收机
公开(公告)号：US08687751B1
公开(公告)日：2014-04-01
申请号：US13047056
申请日：2011-03-14
申请人： Jungwon Lee , Yakun Sun , Jiwoong Choi , Leilie Song , Adina Matache
发明人： Jungwon Lee , Yakun Sun , Jiwoong Choi , Leilie Song , Adina Matache
IPC分类号： H04B7/10
CPC分类号： H04L1/0048 , H04B7/0413 , H04J11/004
摘要： A system including a first receiver module and a first interference canceller module. The first receiver module generates a first set of decoded codewords by decoding codewords in a received signal and determines if any of the first set of decoded codewords fails cyclic redundancy check (CRC). The first interference canceller module generates a second signal based on a first decoded codeword from the first set of decoded codewords when (i) any of the first set of decoded codewords fails CRC and (ii) the first decoded codeword passes CRC. By subtracting the second signal from the first signal, the first interference canceller module (i) cancels interference of a first codeword, which corresponds to the first decoded codeword, on a second set of codewords, which includes the plurality of codewords and excludes the first codeword and (ii) generates a third signal, which includes the second set of codewords.
摘要翻译：一种包括第一接收机模块和第一干扰消除器模块的系统。第一接收机模块通过对接收信号中的码字进行解码来生成第一组解码码字，并且确定第一组解码码字中的任何一个是否失败循环冗余校验（CRC）。当（i）第一组解码码字中的任何一个失败CRC时，和（ii）第一解码码字通过CRC，第一干扰消除器模块基于来自第一组解码码字的第一解码码字生成第二信号。通过从第一信号中减去第二信号，第一干扰消除器模块（i）在包括多个码字的第二组码字上消除与第一解码码字相对应的第一码字的干扰，并且排除第一信号码字和（ii）产生包括第二组码字的第三信号。

5. 发明授权

US08539288B1 Methods and apparatus for multiple input multiple output (MIMO) successive interference cancellation (SIC) with retransmissions 有权
标题翻译：具有重传的多输入多输出（MIMO）连续干扰消除（SIC）的方法和装置
公开(公告)号：US08539288B1
公开(公告)日：2013-09-17
申请号：US13165832
申请日：2011-06-22
申请人： Yakun Sun , Jungwon Lee
发明人： Yakun Sun , Jungwon Lee
IPC分类号： G08C25/02
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 with retransmissions. A plurality of codewords is transmitted in a current transmission time. Some of the codewords may have been previously transmitted in previous transmission attempts according to a retransmission protocol. The plurality of codewords is received and an ordering metric is computed for a received codeword based on channels associated with multiple transmission attempts of the codeword. A decoding ordering of the codewords is determined based on the computed ordering metric. Performance parameters such as Packet Error Rate (PER), channel gain, and/or equalizer-output Signal-to-Interference and Noise Ratio (SINR) may be used to evaluate a channel quality for each one of the transmission attempts of the codeword. The ordering metric may be updated recursively with each transmission attempt.
摘要翻译：提供了用于在具有重发的多输入多输出传输（MIMO）系统中确定连续干扰消除（SIC）解码排序的系统和方法。在当前传输时间内发送多个码字。根据重传协议，先前的传输尝试中可能已经先前传送了一些码字。接收多个码字，并且基于与码字的多个发送尝试相关联的信道对接收到的码字计算排序度量。基于所计算的排序度量来确定码字的解码排序。可以使用诸如分组差错率（PER），信道增益和/或均衡器输出信号与干扰和噪声比（SINR）的性能参数来评估码字的每个传输尝试的信道质量。每个传输尝试可以递归地更新排序度量。

6. 发明授权

US08516353B2 Symbol vector-level combining receiver for incremental redundancy HARQ with MIMO 有权
标题翻译：符号矢量级组合接收机，用于增量冗余HARQ与MIMO
公开(公告)号：US08516353B2
公开(公告)日：2013-08-20
申请号：US13605099
申请日：2012-09-06
申请人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
发明人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
IPC分类号： H03M13/00
CPC分类号： H04B7/024 , H04B7/0413 , H04L1/0042 , H04L1/0068 , H04L1/0643 , H04L1/1819
摘要： Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. Each bit position of the mother code may be mapped to an output symbol, and each output symbol may be mapped to an antenna for transmission. One or more transmissions of symbols contained in the output symbols may be performed, where each transmission may include puncturing the mother code by selecting one or more symbols from the of output symbols, and transmitting each symbol in the one or more symbols on an antenna corresponding to that symbol. The mother code may be decoded, in part, by determining combinable bits contained within a set of received symbols, and computing one or more log-likelihood ratio values corresponding to each symbol in the set of received symbols.
摘要翻译：提供了用于以增量冗余混合自动重复请求协议发送和接收母码的技术。母码的每个比特位置可以被映射到输出符号，并且每个输出符号可以被映射到天线以进行传输。可以执行输出符号中包含的符号的一个或多个传输，其中每个传输可以包括通过从输出符号中选择一个或多个符号来对母码进行穿刺，并且在天线上的一个或多个符号中发送每个符号到那个符号。可以部分地通过确定包含在一组接收到的符号内的可组合比特，以及计算与所接收的符号集合中的每个符号相对应的一个或多个对数似然比值来对母码进行解码。

7. 发明授权

US08472381B1 Methods and apparatus for antenna spoofing 有权
标题翻译：天线欺骗的方法和装置
公开(公告)号：US08472381B1
公开(公告)日：2013-06-25
申请号：US12856421
申请日：2010-08-13
申请人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou , Yakun Sun
发明人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou , Yakun Sun
IPC分类号： H04W4/00
CPC分类号： H04B7/0456 , H04B7/0417 , H04B7/0608 , H04B7/0617 , H04B7/0671 , H04B7/12 , H04L25/0242 , H04L25/03898 , H04L25/03949 , H04L49/101
摘要： In a method for utilizing beamforming in a wireless communication system, reference signals corresponding to a first communication channel from a first communication device to a second communication device are received, and an estimate of the first communication channel is generated using the received reference signals. One or more transmit beamforming vectors are calculated using the estimate of the first communication channel, and the one or more transmit beamforming vectors are utilized to transmit signals via a second communication channel from the second communication device to the first communication device while the first communication device assumes that the first second communication device is not utilizing beamforming.
摘要翻译：在无线通信系统中利用波束形成的方法中，接收对应于从第一通信设备到第二通信设备的第一通信信道的参考信号，并且使用所接收的参考信号来生成第一通信信道的估计。使用第一通信信道的估计来计算一个或多个发射波束形成向量，并且利用一个或多个发射波束成形向量将信号经由第二通信信道从第二通信设备传输到第一通信设备，同时第一通信设备假设第一第二通信设备不使用波束形成。

8. 发明授权

US08271861B2 Symbol vector-level combining receiver for incremental redundancy HARQ with MIMO 有权
标题翻译：符号矢量级组合接收机，用于增量冗余HARQ与MIMO
公开(公告)号：US08271861B2
公开(公告)日：2012-09-18
申请号：US12463025
申请日：2009-05-08
申请人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
发明人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
IPC分类号： H03M13/03
CPC分类号： H04B7/024 , H04B7/0413 , H04L1/0042 , H04L1/0068 , H04L1/0643 , H04L1/1819
摘要： Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. A set of information bits corresponding to a message is encoded and interleaved to produce the mother code. Each bit position of the mother code is mapped to an output symbol, and each output symbol is mapped to an antenna for transmission. One or more transmissions are performed, where each transmission includes puncturing the mother code by selecting one or more symbols from the output symbols, and transmitting each symbol in the one or more symbols on an antenna corresponding to that symbol. The mother code is decoded, in part, by determining combinable bits contained within a set of received symbols and computing one or more log-likelihood ratio values corresponding to each symbol in the set of received symbols.
摘要翻译：提供了用于以增量冗余混合自动重复请求协议发送和接收母码的技术。与消息相对应的一组信息位被编码和交织以产生母码。母码的每个比特位置被映射到输出符号，并且每个输出符号被映射到用于发送的天线。执行一个或多个传输，其中每个传输包括通过从输出符号中选择一个或多个符号并且在与该符号相对应的天线上的一个或多个符号中发送每个符号来对母码进行穿孔。部分地通过确定包含在一组接收到的符号中的可组合比特并且计算与所接收的符号集合中的每个符号相对应的一个或多个对数似然比值来对母码进行解码。

9. 发明授权

US08121235B1 Dimension reduction for codebook search 有权
标题翻译：码本搜索缩小尺寸
公开(公告)号：US08121235B1
公开(公告)日：2012-02-21
申请号：US12403112
申请日：2009-03-12
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.
摘要翻译：提供了用于在码本中的多个码字中搜索用于预编码的码字的系统，例如在多输入多输出（MIMO）传输系统中使用的系统。可以利用尺寸减小技术来降低码本搜索的复杂性并提高码本搜索的效率。可以计算码本中的最优码字和码字的空间。距离值可以基于码字的空值=空值来计算。可以基于来自最佳码字的最小距离值从码本中选择码字。

10. 发明授权

US08750418B2 Symbol vector-level combining transmitter for incremental redundancy HARQ with MIMO 有权
标题翻译：符号矢量级组合发射机，用于增量冗余HARQ与MIMO
公开(公告)号：US08750418B2
公开(公告)日：2014-06-10
申请号：US12463017
申请日：2009-05-08
申请人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
发明人： Jungwon Lee , Yakun Sun , Hui-Ling Lou
IPC分类号： H04L27/00
CPC分类号： H04B7/024 , H04B7/0413 , H04L1/0042 , H04L1/0068 , H04L1/0643 , H04L1/1819
摘要： Techniques are provided for transmitting and receiving a mother code in an incremental redundancy hybrid automatic repeat-request protocol. A set of information bits corresponding to a message may be encoded and interleaved to produce the mother code. Each bit position of the mother code may be mapped to an output symbol, and each output symbol may be mapped to an antenna for transmission. One or more transmissions of symbols contained in the output symbols may be performed, where each transmission may include puncturing the mother code by selecting one or more symbols from the of output symbols, and transmitting each symbol in the one or more symbols on an antenna corresponding to that symbol. The mother code may be decoded, in part, by determining combinable bits contained within a set of received symbols, and computing one or more log-likelihood ratio values corresponding to each symbol in the set of received symbols.
摘要翻译：提供了用于以增量冗余混合自动重复请求协议发送和接收母码的技术。对应于消息的一组信息位可以被编码和交织以产生母码。母码的每个比特位置可以被映射到输出符号，并且每个输出符号可以被映射到天线以进行传输。可以执行输出符号中包含的符号的一个或多个传输，其中每个传输可以包括通过从输出符号中选择一个或多个符号来对母码进行穿刺，并且在天线上的一个或多个符号中发送每个符号到那个符号。可以部分地通过确定包含在一组接收到的符号内的可组合比特，以及计算与所接收的符号集合中的每个符号相对应的一个或多个对数似然比值来对母码进行解码。

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