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41. 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。

42. 发明授权

US08494097B1 Tracking automatic gain control of orthogonal frequency domain multiplexing systems 有权
标题翻译：跟踪正交频域复用系统的自动增益控制
公开(公告)号：US08494097B1
公开(公告)日：2013-07-23
申请号：US13596513
申请日：2012-08-28
申请人： Jungwon Lee , Qing Zhao , Hui-Ling Lou
发明人： Jungwon Lee , Qing Zhao , Hui-Ling Lou
IPC分类号： H04L27/08 , H04L27/28
CPC分类号： H04L27/08 , H03G3/3052 , H03G3/3078 , H04L27/2626
摘要： A system including a variable gain amplifier, an automatic gain control module, and a channel estimation module. The variable gain amplifier amplifies an input signal in accordance with a gain. The input signal includes a plurality of orthogonal frequency domain multiplexing symbols. Each of the plurality of orthogonal frequency domain multiplexing symbols is preceded by a respective cyclic prefix. The automatic gain control module adjusts, based on a signal strength of the input signal, the gain of the variable gain amplifier during the respective cyclic prefix preceding each of the plurality of orthogonal frequency domain multiplexing symbols. The automatic gain control module generates a control signal in response to the gain of the variable gain amplifier being adjusted. The channel estimation module generates a channel estimate for each of the plurality of orthogonal frequency domain multiplexing symbols and updates the channel estimate based on the control signal.
摘要翻译：一种包括可变增益放大器，自动增益控制模块和信道估计模块的系统。可变增益放大器根据增益来放大输入信号。输入信号包括多个正交频域复用符号。多个正交频域复用符号中的每一个前面都有相应的循环前缀。所述自动增益控制模块基于所述输入信号的信号强度，在所述多个正交频域复用符号之前的各个循环前缀期间，调整所述可变增益放大器的增益。自动增益控制模块响应于可调增益放大器的增益而产生控制信号。信道估计模块为多个正交频域多路复用符号中的每一个生成信道估计，并且基于控制信号来更新信道估计。

43. 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。

44. 发明授权

US08411805B1 Joint estimation of channel and preamble sequence for orthogonal frequency division multiplexing systems 有权
标题翻译：正交频分复用系统的信道和前导序列的联合估计
公开(公告)号：US08411805B1
公开(公告)日：2013-04-02
申请号：US12169986
申请日：2008-07-09
申请人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou
发明人： Jungwon Lee , Jihwan P. Choi , Hui-Ling Lou
IPC分类号： H04L27/06
CPC分类号： H04W24/02 , H04L25/0224 , H04L25/0244 , H04L27/2613 , H04L27/2656 , H04L27/2675 , H04L27/2695
摘要： A mobile station (MS) includes an estimation module, a filter module, and a filter selection module. The estimation module receives an input signal having subcarriers and generates first channel estimates based on the input signal. The subcarriers are selectively used by a base station (BS) to transmit preamble sequences when communicating with the MS. The filter module includes first and second filters. One of the first and second filters selectively filters the first channel estimates and generates second channel estimates. The filter selection module selects the one of the first and second filters based on a number of the subcarriers used to transmit the preamble sequences.
摘要翻译：移动台（MS）包括估计模块，滤波器模块和滤波器选择模块。估计模块接收具有子载波的输入信号，并且基于输入信号产生第一信道估计。当与MS通信时，子载波由基站（BS）选择性地使用来发送前导码序列。过滤器模块包括第一和第二过滤器。第一和第二滤波器之一选择性地滤波第一信道估计并产生第二信道估计。滤波器选择模块基于用于发送前导码序列的子载波的数量来选择第一和第二滤波器中的一个。

45. 发明授权

US08411778B1 Optimal linear equalizer for MIMO systems with HARQ and/or repetition coding 有权
标题翻译：具有HARQ和/或重复编码的MIMO系统的最优线性均衡器
公开(公告)号：US08411778B1
公开(公告)日：2013-04-02
申请号：US11834466
申请日：2007-08-06
申请人： Jungwon Lee , Hui-Ling Lou , Woong Jun Jang
发明人： Jungwon Lee , Hui-Ling Lou , Woong Jun Jang
IPC分类号： H04B7/02
CPC分类号： H04L25/067 , 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 symbols of the received signal vectors are combined, forming a combined received signal vector that may be treated as a single received signal vector. The combined received signal vector may be equalized by, for example, a zero-forcing or minimum-mean-squared error equalizer or another suitable linear equalizer. Following equalization, the equalized signal vector may be decoded using a simple, 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。组合接收信号矢量的符号，形成可被视为单个接收信号矢量的组合接收信号矢量。组合的接收信号矢量可以通过例如零强制或最小均方误差均衡器或另一适当的线性均衡器来均衡。在均衡之后，可以使用简单的线性解码器来解码均衡信号向量。

46. 发明授权

US08320508B1 Joint estimation of channel and preamble sequence for orthogonal frequency division multiplexing systems 有权
标题翻译：正交频分复用系统的信道和前导序列的联合估计
公开(公告)号：US08320508B1
公开(公告)日：2012-11-27
申请号：US13214817
申请日：2011-08-22
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04L27/06
CPC分类号： H04L25/022 , H04L25/0224 , H04L27/261
摘要： A system including an estimation module, a processing module, and a control module. The estimation module is configured to generate a first set of channel estimates for a plurality of subcarriers of a received signal. The processing module is configured to generate a second set of channel estimates for the plurality of subcarriers, in which the second set of channel estimates are generated based on the first set of channel estimates. The control module is configured to estimate a preamble sequence in the received signal based on each of (i) the first set of channel estimates and (ii) the second set of channel estimates.
摘要翻译：一种包括估计模块，处理模块和控制模块的系统。估计模块被配置为生成接收信号的多个子载波的第一组信道估计。处理模块被配置为生成多个子载波的第二组信道估计，其中基于第一组信道估计来生成第二组信道估计。控制模块被配置为基于（i）第一组信道估计和（ii）第二组信道估计中的每一个来估计接收信号中的前导码序列。

47. 发明授权

US08315568B1 Digital radio data system receiver methods and apparatus 有权
标题翻译：数字无线电数据系统接收机的方法和装置
公开(公告)号：US08315568B1
公开(公告)日：2012-11-20
申请号：US13345650
申请日：2012-01-06
申请人： Jungwon Lee , Dimitrios-Alexandros Toumpakaris , Hui-Ling Lou , Chris Cheng-Chieh Lee
发明人： Jungwon Lee , Dimitrios-Alexandros Toumpakaris , Hui-Ling Lou , Chris Cheng-Chieh Lee
IPC分类号： H04B1/16
CPC分类号： H04L27/2334 , H04B1/1653 , H04H20/34 , H04H40/18 , H04H2201/13
摘要： Methods and apparatus are provided for receiving a first signal and generating an output signal indicative of radio data system (“RDS”) information. A receiver circuit of the invention can include mixer circuitry, lowpass filter circuitry, downsampler circuitry, and decoder circuitry. Advantageously, the receiver circuit can operate entirely within the digital domain, promoting interoperability with digital frequency modulation (“FM”) demodulator circuitry.
摘要翻译：提供了用于接收第一信号并产生指示无线电数据系统（RDS）信息的输出信号的方法和装置。本发明的接收机电路可以包括混频器电路，低通滤波器电路，下采样器电路和解码器电路。有利地，接收器电路可以完全在数字域内操作，促进与数字频率调制（FM）解调器电路的互操作性。

48. 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。

49. 发明授权

US08243860B1 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：US08243860B1
公开(公告)日：2012-08-14
申请号：US12171790
申请日：2008-07-11
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。

50. 发明申请

US20120202548A1 PSEUDO-OMNI-DIRECTIONAL BEAMFORMING WITH MULTIPLE NARROW-BAND BEAMS 有权
标题翻译： PSEUDO-OMNI-DIRECTIONAL BEAMFORMING WITH MULTILELE NARROW-BAND BEAMS
公开(公告)号：US20120202548A1
公开(公告)日：2012-08-09
申请号：US13451257
申请日：2012-04-19
申请人： Jungwon Lee , Hui-Ling Lou
发明人： Jungwon Lee , Hui-Ling Lou
IPC分类号： H04W72/08 , H01Q3/00
CPC分类号： H04W24/10 , H04B7/0408 , H04B7/0617 , H04B7/0632 , H04W16/28
摘要： In a technique for communication with a station on a wireless network, the technique includes forming a plurality of narrow-band beams, each having a different angular direction from an antenna of a base station and collectively distributed over a beamspace to form a pseudo-omni-directional beam pattern. That beamspace may span an entire spherical region or a portion thereof, for example, when the narrow-band beams are broadcast over a sector of an entire spherical region. The technique may assign each of the plurality of narrow-band beams to a different frequency band (such as a different channel band or sub-channel) on the wireless network. The technique may simultaneously broadcast the plurality of narrow-band beams in a time-varying manner such that the angular direction of each of the plurality of narrow-band beams varies with time, where that variation may be random or ordered.
摘要翻译：在用于与无线网络上的站通信的技术中，该技术包括形成多个窄带波束，每个窄带波束具有与基站的天线不同的角度方向，并且共同分布在波束空间上以形成伪全波段方向光束图案。该波束空间可以跨越整个球形区域或其一部分，例如当窄带波束在整个球形区域的扇区上广播时。该技术可以将多个窄带波束中的每一个分配给无线网络上的不同频带（例如，不同的信道频带或子信道）。该技术可以以时变方式同时广播多个窄带波束，使得多个窄带波束中的每一个的角度方向随时间变化，其中该变化可以是随机的或有序的。

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