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11. 发明申请

US20090004984A1 ENHANCED FREQUENCY DOMAIN SPREADING 有权
标题翻译：增强频域扩展
公开(公告)号：US20090004984A1
公开(公告)日：2009-01-01
申请号：US11772092
申请日：2007-06-29
申请人： Rabih Chrabieh , Samir S. Soliman
发明人： Rabih Chrabieh , Samir S. Soliman
IPC分类号： H04B1/00
CPC分类号： H04L5/0044
摘要： A system and method are provided for using frequency domain spreading to generate real signals in the time domain. The method supplies a first complex frequency domain symbol (α) and a second complex frequency domain symbol (αi), and maps (α+jαi) onto a subcarrier (+f). Further, (α−jαi)* is mapped onto a mirror subcarrier (−f). The mappings are converted into a complex time domain symbol carrying α and jαi in a single inverse fast Fourier transformation (IFFT). The real component of the complex time domain symbol (α) is initially supplied, and subsequently supplied is an imaginary component of the complex time domain symbol (αi). The real symbol component (α) is supplied by carrying a on the subcarrier (+f), and carrying (α)* on the mirror subcarrier (−f). The imaginary symbol component αi is supplied by carrying αi on the subcarrier (+f), and carrying (αi)* on the mirror subcarrier (−f).
摘要翻译：提供了一种使用频域扩展在时域中产生实信号的系统和方法。该方法提供第一复杂频域符号（α）和第二复频域符号（alphai），并将（α+ jalphai）映射到子载波（+ f）上。此外，（alpha-jalphai）*映射到镜像副载波（-f）。映射在单个快速傅里叶逆变换（IFFT）中被转换成携带alpha和jalphai的复杂时域符号。最初提供复时域符号（α）的真实分量，随后提供复数时域符号（alphai）的虚部分。通过在子载波（+ f）上携带，并在镜像副载波（-f）上携带（α）*来提供真实符号分量（α）。通过在副载波（+ f）上携带alphai并在镜像副载波（-f）上携带（alphai）*来提供虚拟符号分量alphai。

12. 发明申请

US20060107268A1 Method and apparatus for implementing task management of computer operations 有权
标题翻译：实施计算机操作任务管理的方法和装置
公开(公告)号：US20060107268A1
公开(公告)日：2006-05-18
申请号：US11280667
申请日：2005-11-15
申请人： Rabih Chrabieh
发明人： Rabih Chrabieh
IPC分类号： G06F9/46
CPC分类号： G06F9/4881
摘要： A development and runtime framework for applications that execute in real-time operating systems. Application development is enhanced through simple instructions that allow a programmer to declare functions and sets of functions as tasks and supertasks, respectively, and manage the execution of functions, tasks and supertasks with priorities. A compiler or pre-processor provides tools for generating the code for tasks and supertasks, and the management code for managing execution. Function calls may be made directly to functions within supertasks via respective entrypoints, and the tasks are managed based on the functions being invoked. Within a supertask, a higher priority function may be runnable while a lower priority function of that supertask is suspended. A cookie is used to recognize when a register update for a supertask may be omitted, enabling more efficient context switching.
摘要翻译：用于在实时操作系统中执行的应用程序的开发和运行时框架。通过简单的指令来增强应用程序开发，这些指令允许程序员分别将函数和函数集声明为任务和超级任务，并且管理具有优先级的功能，任务和超级任务的执行。编译器或预处理器提供用于生成任务和超级任务代码的工具，以及用于管理执行的管理代码。可以通过相应的入口点对超级任务内的功能直接进行功能调用，并且基于所调用的功能来管理任务。在超级块中，较高优先级的功能可以运行，而该超级任务的较低优先级功能被暂停。一个cookie用于识别何时可以省略超级任务的寄存器更新，从而实现更有效的上下文切换。

13. 发明授权

US08724738B2 Multidimensional constellations for coded transmission 有权
标题翻译：用于编码传输的多维星座
公开(公告)号：US08724738B2
公开(公告)日：2014-05-13
申请号：US13425351
申请日：2012-03-20
申请人： Rabih Chrabieh , Ozgur Dural
发明人： Rabih Chrabieh , Ozgur Dural
IPC分类号： H04L27/28 , H04L27/36
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 dements 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度量的第一列，以及包括第一矩阵元素的排列的附加列。

14. 发明申请

US20140062733A1 METHOD FOR DECODING A SPATIALLY MULTIPLEXED DATA SIGNAL USING A MAXIMUM LIKELIHOOD DETECTION 有权
标题翻译：使用最大似然检测来解码空间多路复用数据信号的方法
公开(公告)号：US20140062733A1
公开(公告)日：2014-03-06
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： H03M7/00
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∥C−12|xi|2−2(HiHC−1Y−0.5Σj≠i,nHiHC−1Hjxj)xi*+∥Hn∥C−12|xn|2−2(HnHC−1Y−Σj≠nHnHC−1Hjxj)xn*=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-SigmaiHixi | C-12，表示为：Sigmai <>n‖C-12 | xi | 2-2（HiHC-1Y-0.5Sigmaj nHnHC-1Hjxj）xn * = Sigmai

15. 发明授权

US08553790B2 Low power ultra wideband transceivers 有权
标题翻译：低功率超宽带收发器
公开(公告)号：US08553790B2
公开(公告)日：2013-10-08
申请号：US13357458
申请日：2012-01-24
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。

16. 发明授权

US08428175B2 Quadrature modulation rotating training sequence 失效
标题翻译：正交调制旋转训练序列
公开(公告)号：US08428175B2
公开(公告)日：2013-04-23
申请号：US11684566
申请日：2007-03-09
申请人： Rabih Chrabieh
发明人： Rabih Chrabieh
IPC分类号： H04L27/00
CPC分类号： H04B17/0085 , H04B17/20
摘要： A system and method are provided for transmitting a rotating training sequence. A rotating training signal is generated in quadrature modulation transmitter. The rotating training signal includes training information sent via an in-phase (I) modulation path, as well as training information sent via a quadrature (Q) modulation path. The rotating training signal may be generated by initially sending training information via the I modulation path, and subsequently sending training information via the Q modulation path. The training information sent via the I modulation path may include a first symbol having a reference phase (e.g., 0 degrees or 180 degrees). Then, the training information sent via the Q modulation path would include a second symbol having a phase that is ±90 from the reference phase.
摘要翻译：提供了用于传送旋转训练序列的系统和方法。在正交调制发射机中产生旋转训练信号。旋转训练信号包括通过同相（I）调制路径发送的训练信息，以及通过正交（Q）调制路径发送的训练信息。可以通过经由I调制路径初始发送训练信息，并且随后经由Q调制路径发送训练信息来生成旋转训练信号。通过I调制路径发送的训练信息可以包括具有参考相位（例如，0度或180度）的第一符号。然后，通过Q调制路径发送的训练信息将包括具有与参考相位相差±90°的相位的第二符号。

17. 发明申请

US20120128035A1 LOW POWER ULTRA WIDEBAND TRANSCEIVERS 有权
标题翻译：低功率超宽带收发器
公开(公告)号：US20120128035A1
公开(公告)日：2012-05-24
申请号：US13357458
申请日：2012-01-24
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： H04B1/713 , H04B1/69 , H04B1/06 , H04B1/02
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。

18. 发明授权

US08161453B2 Method and apparatus for implementing task management of computer operations 有权
标题翻译：实施计算机操作任务管理的方法和装置
公开(公告)号：US08161453B2
公开(公告)日：2012-04-17
申请号：US11280667
申请日：2005-11-15
申请人： Rabih Chrabieh
发明人： Rabih Chrabieh
IPC分类号： G06F9/44
CPC分类号： G06F9/4881
摘要： A development and runtime framework for applications that execute in real-time operating systems. Application development is enhanced through simple instructions that allow a programmer to declare functions and sets of functions as tasks and supertasks, respectively, and manage the execution of functions, tasks and supertasks with priorities. A compiler or pre-processor provides tools for generating the code for tasks and supertasks, and the management code for managing execution. Function calls may be made directly to functions within supertasks via respective entrypoints, and the tasks are managed based on the functions being invoked. Within a supertask, a higher priority function may be runnable while a lower priority function of that supertask is suspended. A cookie is used to recognize when a register update for a supertask may be omitted, enabling more efficient context switching.
摘要翻译：用于在实时操作系统中执行的应用程序的开发和运行时框架。通过简单的指令来增强应用程序开发，这些指令允许程序员分别将函数和函数集声明为任务和超级任务，并且管理具有优先级的功能，任务和超级任务的执行。编译器或预处理器提供用于生成任务和超级任务代码的工具，以及用于管理执行的管理代码。可以通过相应的入口点对超级任务内的功能直接进行功能调用，并且基于所调用的功能来管理任务。在超级块中，较高优先级的功能可以运行，而该超级任务的较低优先级功能被暂停。一个cookie用于识别何时可以省略超级任务的寄存器更新，从而实现更有效的上下文切换。

19. 发明授权

US08009750B2 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：US08009750B2
公开(公告)日：2011-08-30
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： H04L27/28
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。

20. 发明申请

US20080225982A1 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：US20080225982A1
公开(公告)日：2008-09-18
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： H04L27/00
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。

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