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31. 发明授权

US08711958B2 Method for decoding a spatially multiplexed data signal using a maximum likelihood detection 有权
标题翻译：使用最大似然检测对空间复用数据信号进行解码的方法
公开(公告)号：US08711958B2
公开(公告)日：2014-04-29
申请号：US13598161
申请日：2012-08-29
申请人： Rabih Chrabieh , Yang Liu
发明人： Rabih Chrabieh , Yang Liu
IPC分类号： H04L5/12
CPC分类号： H04L25/067 , H04L1/0048 , H04L1/005 , H04L1/0631 , H04L25/03891 , H04L2025/03426
摘要： The disclosure relates to a method for decoding a received signal in a MIMO communication system and in at least one layer, each layer carrying at least one data symbol belonging to a signal constellation. The method includes, for one of the at least one layer, a maximum likelihood detection step. This step includes: selecting one candidate value for the data symbol of the layer, and determining the Euclidian distance between the received signal Y and the data signal transmitted using said candidate value multiplied by said channel matrix H, weighted by the inverse of a noise covariance matrix C such as ∥Y−ΣiHixi∥C−12, expressed as: Σi≠n∥Hi∥C−12|xi|2−2(HiHC−1Y−0.5Σj≠i,nHiHC−1Hjxj)x*i+∥Hn∥C−12|xn|2−2(HnHC−1Y−Σj≠nHnHC−1Hjxj)x*n=Σi≠nαiR(xi)2−2βiRxi+αnR(xn)2−2βnRxn+Σi≠nαiI(ℑxi)2−2βiIℑxi+αnI(ℑxn)2−2βnIℑxn. The terms depending on αk are computed by adding to each of them a predetermined constant depending on the size of the constellation of the layer k, called a constellation dependent constant.
摘要翻译：本公开涉及一种用于对MIMO通信系统中的接收信号进行解码的方法，并且在至少一个层中，每层承载属于信号星座的至少一个数据符号。对于所述至少一个层中的一个，所述方法包括最大似然检测步骤。该步骤包括：为层的数据符号选择一个候选值，并且确定接收信号Y与使用所述候选值发送的数据信号之间的欧几里德距离乘以所述信道矩阵H，由噪声协方差矩阵C，例如∥Y-＆Sgr;iHixi‖C-12，表示为：＆Sgr; i≠n∥Hi| C-12 | xi | 2-2（HiHC-1Y-0.5＆Sgr; j≠i，nHiHC-1Hjxj ）x * i +∥Hn| C-12 | xn | 2-2（HnHC-1Y-＆Sgr; j≠nHnHC-1Hjxj）x * n =＆Sgr; i≠nαiR（xi）2-2＆bgr; iRxi +αnR（xn ）2-2＆bgr; nRxn +＆Sgr; i≠nαiI（ℑxi）2-2＆bgr; iIxixi +αnI（ℑxn）2-2＆bgr;nIℑxn。通过根据αk的星座的大小将它们分配给预定的常数来计算取决于αk的项，称为星座依赖常数。

32. 发明授权

US08352843B2 Method and apparatus for coding a communication signal 有权
标题翻译：用于编码通信信号的方法和装置
公开(公告)号：US08352843B2
公开(公告)日：2013-01-08
申请号：US11962762
申请日：2007-12-21
申请人： Rabih Chrabieh , Koorosh Akhavan
发明人： Rabih Chrabieh , Koorosh Akhavan
IPC分类号： H03M13/23 , H03M13/53
CPC分类号： H04L1/0041 , H04L1/0057 , H04L1/0059 , H04L1/0068 , H04L1/0071 , H04L1/08
摘要： An apparatus for coding a communication signal is provided. The apparatus includes an encoder configured to encode the communication signal, to increase the length of the communication signal, and a repetition coder configured to repetitively code part of the encoded communication signal, to utilize at least some of the increased length of the communication signal. The apparatus further includes an interleaver configured to interleave the repetitively coded communication signal. A method is also provided for coding a communication signal.
摘要翻译：提供了一种用于对通信信号进行编码的装置。该装置包括：编码器，被配置为对通信信号进行编码，以增加通信信号的长度;以及重复编码器，被配置为重复地编码编码的通信信号的一部分，以利用通信信号的增加的长度中的至少一些。该装置还包括被配置为交织重复编码的通信信号的交织器。还提供了一种用于对通信信号进行编码的方法。

33. 发明申请

US20120039421A1 QUADRATURE IMBALANCE ESTIMATION USING UNBIASED TRAINING SEQUENCES 失效
标题翻译：使用未经修改的培训序列的平均不平等估计
公开(公告)号：US20120039421A1
公开(公告)日：2012-02-16
申请号：US13180393
申请日：2011-07-11
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04L27/06
CPC分类号： H04L27/3863
摘要： A system and method are provided for removing quadrature imbalance errors in received data. The method accepts an unbiased training sequence in a quadrature demodulation receiver. An unbiased training sequence has a uniform accumulated power evenly distributed in a complex plane, and includes predetermined reference signals (p) at frequency +f and predetermined mirror signals (pm) at frequency −f. The unbiased training sequence is processed, generating a sequence of processed symbols (y) at frequency +f, representing complex plane information in the unbiased training sequence. Each processed symbol (y) is multiplied by the mirror signal (pm), and an unbiased quadrature imbalance estimate Bm is obtained at frequency (−f). Using quadrature imbalance estimates, channel estimates, and processed symbols, an imbalance-corrected symbol can be generated.
摘要翻译：提供了一种用于消除接收数据中的正交不平衡误差的系统和方法。该方法在正交解调接收机中接受无偏差的训练序列。无偏差的训练序列具有均匀分布在复平面中的均匀累积功率，并且包括频率为+ f的预定参考信号（p）和频率为-f的预定镜像信号（pm）。处理无偏差训练序列，以频率+ f生成经处理符号（y）的序列，表示无偏差训练序列中的复平面信息。每个被处理符号（y）乘以镜像信号（pm），并且以频率（-f）获得无偏差正交不平衡估计Bm。使用正交不平衡估计，信道估计和经处理的符号，可以产生不平衡校正的符号。

34. 发明授权

US08102929B2 Low power ultra wideband transceiver 有权
标题翻译：低功耗超宽带收发器
公开(公告)号：US08102929B2
公开(公告)日：2012-01-24
申请号：US12369926
申请日：2009-02-12
申请人： Samir Soliman , Ozgur Dural , Krishnan Rajamani , Rabih Chrabieh
发明人： Samir Soliman , Ozgur Dural , Krishnan Rajamani , Rabih Chrabieh
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04B1/69 , H04B1/71635 , H04B1/71637 , H04B1/719
摘要： Low-power transmitter and/or receiver devices are provided by sacrificing time and/or frequency diversity in exchange for lower power consumption. When channel conditions indicate that time and/or frequency spreading are unnecessary for transmissions, a transmitter may enter into a power-conservation mode in which transmissions are performed using a time gating scheme or a time repetition scheme. In the time gating scheme, symbols are transmitting just once, rather than a plurality of times, but with increased transmission power. In the time repetition scheme, copies of the same symbol are transmitted a plurality of times on the same frequency on different symbol transmission periods, instead of being retransmitted on different frequencies on different symbol transmission periods. Consequently, the symbol can be generated once and stored for subsequent retransmission, thereby allowing some of the transmitter/receiver chain components can be operated at a lower duty cycle or processing speed to conserve power.
摘要翻译：通过牺牲时间和/或频率分集来提供低功率发射机和/或接收机设备，以换取更低的功耗。当信道条件指示时间和/或频率扩展对于传输是不必要的时，发射机可以进入其中使用时间选通方案或时间重复方案执行传输的功率节约模式。在时间选通方案中，符号只传输一次，而不是多次，但是传输功率增加。在时间重复方案中，相同符号的副本在不同的符号传输周期上以相同频率发送多次，而不是在不同的符号传输周期上在不同的频率上重发。因此，可以生成符号一次并存储以用于随后的重传，从而允许一些发送器/接收器链组件可以以较低的占空比或处理速度操作以节省功率。

35. 发明授权

US08081695B2 Channel estimation using frequency smoothing 有权
标题翻译：信道估计使用频率平滑
公开(公告)号：US08081695B2
公开(公告)日：2011-12-20
申请号：US11853809
申请日：2007-09-11
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04L23/02 , H04L27/36 , H04L27/38
CPC分类号： H04L5/0007 , H04L25/022 , H04L25/0226 , H04L25/0228 , H04L27/2613
摘要： A system and method are provided for supplying a frequency-smoothed communications training signal. The method generates a frequency-smoothed unbiased training signal in a quadrature modulation transmitter. The frequency-smoothed unbiased training signal includes a plurality of pilot signal products, where each pilot signal product includes complex plane information represented by a reference frequency subcarrier, multiplying complex plane information represented by mirror frequency subcarrier. The sum of the plurality of pilot signal products is equal to zero. The method supplies the frequency-smoothed unbiased training signal so that it may be transmitted within a single symbol period. System and methods are also provided for using a frequency-smoothed training signal in the calculation of a receiver channel estimate.
摘要翻译：提供了一种用于提供频率平滑通信训练信号的系统和方法。该方法在正交调制发射机中产生频率平滑的无偏置训练信号。频率平滑的无偏置训练信号包括多个导频信号乘积，其中每个导频信号乘积包括由参考频率副载波表示的复平面信息，乘以由镜频副载波表示的复平面信息。多个导频信号乘积的和等于零。该方法提供频率平滑的无偏置训练信号，使得其可以在单个符号周期内传输。还提供了系统和方法，用于在接收机信道估计的计算中使用经频率平滑的训练信号。

36. 发明授权

US08064550B2 Quadrature imbalance estimation using unbiased training sequences 有权
标题翻译：使用无偏差训练序列的正交不平衡估计
公开(公告)号：US08064550B2
公开(公告)日：2011-11-22
申请号：US11853808
申请日：2007-09-11
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04L27/06
CPC分类号： H04L27/3863
摘要： A system and method are provided for removing quadrature imbalance errors in received data. The method accepts an unbiased training sequence in a quadrature demodulation receiver. An unbiased training sequence has a uniform accumulated power evenly distributed in a complex plane, and includes predetermined reference signals (p) at frequency +f and predetermined mirror signals (pm) at frequency −f. The unbiased training sequence is processed, generating a sequence of processed symbols (y) at frequency +f, representing complex plane information in the unbiased training sequence. Each processed symbol (y) is multiplied by the mirror signal (pm), and an unbiased quadrature imbalance estimate Bm is obtained at frequency (−f). Using quadrature imbalance estimates, channel estimates, and processed symbols, an imbalance-corrected symbol can be generated.
摘要翻译：提供了一种用于消除接收数据中的正交不平衡误差的系统和方法。该方法在正交解调接收机中接受无偏差的训练序列。无偏差的训练序列具有均匀分布在复平面中的均匀累积功率，并且包括频率为+ f的预定参考信号（p）和频率为-f的预定镜像信号（pm）。处理无偏差训练序列，以频率+ f生成经处理符号（y）的序列，表示无偏差训练序列中的复平面信息。每个被处理符号（y）乘以镜像信号（pm），并且以频率（-f）获得无偏差正交不平衡估计Bm。使用正交不平衡估计，信道估计和经处理的符号，可以产生不平衡校正的符号。

37. 发明申请

US20090245401A1 MULTIDIMENSIONAL CONSTELLATIONS FOR CODED TRANSMISSION 有权
标题翻译：用于编码传输的多维协议
公开(公告)号：US20090245401A1
公开(公告)日：2009-10-01
申请号：US12413262
申请日：2009-03-27
申请人： Rabih Chrabieh , Ozgur Dural
发明人： Rabih Chrabieh , Ozgur Dural
IPC分类号： H04L27/28 , H04L27/00
CPC分类号： H04L1/0041 , H04L1/0058 , H04L1/0071 , H04L5/0007 , H04L5/0044 , H04L5/006
摘要： Techniques for rotating and transmitting multidimensional constellations are disclosed. A method for rotating a multidimensional constellation may include constructing a first rotation matrix, constructing a second rotation matrix, applying orthogonality constraints to the first and second rotation matrices; selecting an optimizing rotation matrix from the first and second rotation matrices; and rotating the multidimensional constellation using the optimizing rotation matrix. Constructing the first rotation matrix and second rotation matrices may include constructing a first column that includes first matrix elements based on the number of axes in the multidimensional constellation, and additional columns that include permutations of the first matrix elements.
摘要翻译：公开了用于旋转和传送多维星座的技术。旋转多维星座的方法可以包括构造第一旋转矩阵，构造第二旋转矩阵，将正交约束应用于第一和第二旋转矩阵; 从所述第一和第二旋转矩阵中选择优化旋转矩阵; 并使用优化旋转矩阵旋转多维星座。构造第一旋转矩阵和第二旋转矩阵可以包括基于多维星座图中的轴的数量构建包括第一矩阵元素的第一列，以及包括第一矩阵元素的排列的附加列。

38. 发明申请

US20090161804A1 Receiver window shaping in OFDM to mitigate narrowband interference 有权
标题翻译： OFDM中的接收机窗口整形，以减轻窄带干扰
公开(公告)号：US20090161804A1
公开(公告)日：2009-06-25
申请号：US11962709
申请日：2007-12-21
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04B1/10
CPC分类号： H04J11/0036 , H04J11/0066 , H04L27/2649 , H04L27/2662
摘要： A receiver window for symbol extraction is provided. A symbol is spread across a plurality of sub-carriers of a frequency band for transmission. If the frequency band is affected by narrowband interference, the receiver window concentrates the narrowband interference energy to minimize its effect on distant sub-carriers within the frequency band. The receiver window is shaped for extracting the symbol from the frequency band, wherein the receiver window has a starting point before the start of the symbol. The receiver window overlaps a previous receiver window for the previous adjacent symbol on the same frequency band. The receiver window is shaped by overlapping and adding a channel impulse response segment from a zero-padded portion of the symbol to the beginning of the symbol and overlapping and adding a second portion from the previous zero-padded symbol (from the same frequency band) to the end of the symbol.
摘要翻译：提供了用于符号提取的接收器窗口。符号分布在用于传输的频带的多个子载波上。如果频带受到窄带干扰的影响，则接收机窗口集中了窄带干扰能量，以最小化其对频带内远距离子载波的影响。接收器窗口被成形为用于从频带提取符号，其中接收器窗口具有在符号开始之前的起始点。接收器窗口与先前在相同频带上的相邻符号的接收器窗口重叠。接收器窗口通过将信号脉冲响应段从符号的零填充部分重叠并添加到符号的开始并重叠并且从先前的零填充符号（从相同的频带）添加第二部分而被整形，到符号的末尾。

39. 发明申请

US20080219386A1 QUADRATURE IMBALANCE ESTIMATION USING UNBIASED TRAINING SEQUENCES 有权
标题翻译：使用未经修改的培训序列的平均不平等估计
公开(公告)号：US20080219386A1
公开(公告)日：2008-09-11
申请号：US11853808
申请日：2007-09-11
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04L27/06
CPC分类号： H04L27/3863
摘要： A system and method are provided for removing quadrature imbalance errors in received data. The method accepts an unbiased training sequence in a quadrature demodulation receiver. An unbiased training sequence has a uniform accumulated power evenly distributed in a complex plane, and includes predetermined reference signals (p) at frequency +f and predetermined mirror signals (pm) at frequency −f. The unbiased training sequence is processed, generating a sequence of processed symbols (y) at frequency +f, representing complex plane information in the unbiased training sequence. Each processed symbol (y) is multiplied by the mirror signal (pm), and an unbiased quadrature imbalance estimate Bm is obtained at frequency (−f). Using quadrature imbalance estimates, channel estimates, and processed symbols, an imbalance-corrected symbol can be generated.
摘要翻译：提供了一种用于消除接收数据中的正交不平衡误差的系统和方法。该方法在正交解调接收机中接受无偏差的训练序列。无偏差的训练序列具有均匀分布在复平面中的均匀累积功率，并且包括频率为+ f的预定参考信号（p）和频率为-f的预定镜像信号（p> m）。处理无偏差训练序列，以频率+ f生成经处理符号（y）的序列，表示无偏差训练序列中的复平面信息。每个经处理的符号（y）被镜像信号（p> m N）相乘，并且在频率（-f）处获得无偏差的正交失衡估计B> m。使用正交不平衡估计，信道估计和经处理的符号，可以产生不平衡校正的符号。

40. 发明授权

US07352774B2 Multiplexing different types of data sequences 有权
标题翻译：复用不同类型的数据序列
公开(公告)号：US07352774B2
公开(公告)日：2008-04-01
申请号：US10262427
申请日：2002-09-30
申请人： Christopher R. Uhlik , Douglas C. Dahlby , Rabih Chrabieh
发明人： Christopher R. Uhlik , Douglas C. Dahlby , Rabih Chrabieh
IPC分类号： H04J3/24
CPC分类号： H04L1/0083 , H04L1/18 , H04L69/22 , H04L2001/0098 , H04W72/1242
摘要： According to an embodiment of the invention, a method and apparatus are described for data bit sequences. According to an embodiment of the invention, a header is inserted in a data burst. One or more high priority messages of a first type are optionally inserted in the data burst starting after the header. One or more messages of a second type are optionally inserted into the data burst starting at an end of the data burst. One or more low priority messages of the first type are optionally inserted in the data.
摘要翻译：根据本发明的实施例，描述了一种用于数据比特序列的方法和装置。根据本发明的实施例，在数据突发中插入报头。一个或多个第一类型的高优先级消息可选地插入到头部之后的数据突发中。第二类型的一个或多个消息可选地插入到从数据突发结束开始的数据脉冲串中。第一类型的一个或多个低优先级消息可选地插入数据中。

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