公开(公告)号：US08488691B2

公开(公告)日：2013-07-16

申请号：US12266842

申请日：2008-11-07

申请人： Rabih Chrabieh ,  Samir S. Soliman ,  Ozgur Dural

发明人： Rabih Chrabieh ,  Samir S. Soliman ,  Ozgur Dural

IPC分类号： H04L27/28

CPC分类号： H04W28/08 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0064 ,  H04L5/0085

摘要： An orthogonal frequency division multiplex (OFDM) transmitter may adaptively load each sub-carrier, buffering less than an OFDM frame in order to reduce hardware requirements and latency. The transmitter may use feedback information from the receiver regarding the quality of the sub-carriers. In addition, combining repetition and puncturing to achieve a desired date rate per class further reduces hardware by simplifying or even eliminating an interleaver. Additional mitigation and even performance enhancement techniques are incorporated to address inter-class boundaries within an OFDM frame, such as introducing transition classes. Channel state information may be reported in various formats including full bitmap, changed subchannels, and reported bad subchannels.

摘要翻译： 正交频分复用（OFDM）发射机可以自适应地加载每个子载波，缓冲小于OFDM帧，以便减少硬件要求和等待时间。 发射机可以使用来自接收机的关于子载波的质量的反馈信息。 此外，组合重复和删截以实现每个类别的所需日期速率通过简化或甚至消除交织器来进一步降低硬件。 并入了额外的缓解和甚至性能增强技术来解决OFDM帧内的类间边界，例如引入转换类。 信道状态信息可以以各种格式报告，包括完整的位图，改变的子信道和报告的坏子信道。

公开(公告)号：US20100086066A1

公开(公告)日：2010-04-08

申请号：US12266842

申请日：2008-11-07

申请人： Rabih Chrabieh ,  Samir S. Soliman ,  Ozgur Dural

发明人： Rabih Chrabieh ,  Samir S. Soliman ,  Ozgur Dural

IPC分类号： H04L27/28

CPC分类号： H04W28/08 ,  H04L5/0007 ,  H04L5/0046 ,  H04L5/0064 ,  H04L5/0085

摘要： An orthogonal frequency division multiplex (OFDM) transmitter may adaptively load each sub-carrier, buffering less than an OFDM frame in order to reduce hardware requirements and latency. The transmitter may use feedback information from the receiver regarding the quality of the sub-carriers. In addition, combining repetition and puncturing to achieve a desired date rate per class further reduces hardware by simplifying or even eliminating an interleaver. Additional mitigation and even performance enhancement techniques are incorporated to address inter-class boundaries within an OFDM frame, such as introducing transition classes. Channel state information may be reported in various formats including full bitmap, changed subchannels, and reported bad subchannels.

摘要翻译： 正交频分复用（OFDM）发射机可以自适应地加载每个子载波，缓冲小于OFDM帧，以便减少硬件要求和等待时间。 发射机可以使用来自接收机的关于子载波的质量的反馈信息。 此外，组合重复和删截以实现每个类别的所需日期速率通过简化或甚至消除交织器来进一步降低硬件。 并入了额外的缓解和甚至性能增强技术来解决OFDM帧内的类间边界，例如引入转换类。 信道状态信息可以以各种格式报告，包括完整的位图，改变的子信道和报告的坏子信道。

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。

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。

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。

公开(公告)号：US20120177138A1

公开(公告)日：2012-07-12

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

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。

公开(公告)号：US20100202493A1

公开(公告)日：2010-08-12

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： H04B1/69

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。

公开(公告)号：US08867662B2

公开(公告)日：2014-10-21

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 ,  H04L27/36 ,  H04L1/00 ,  H04L5/00

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。

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。

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。