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公开(公告)号：US20060039489A1
公开(公告)日：2006-02-23
申请号：US11182083
申请日：2005-07-15
申请人： Muhammad Ikram , Eko Onggosanusi , Vasanthan Raghavan , Anand Dabak , Srinath Hosur , Badrinarayanan Varadarajan
发明人： Muhammad Ikram , Eko Onggosanusi , Vasanthan Raghavan , Anand Dabak , Srinath Hosur , Badrinarayanan Varadarajan
CPC分类号： H04B7/0663 , H04B7/0634 , H04B7/0639 , H04L5/0023 , H04L5/0046 , H04L5/006 , H04L25/0204 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： A method for providing closed-loop transmit precoding between a transmitter and a receiver, includes defining a codebook that includes a set of unitary rotation matrices. The receiver determines which preceding rotation matrix from the codebook should be used for each sub-carrier that has been received. The receiver sends an index to the transmitter, where the transmitter reconstructs the precoding rotation matrix using the index, and precodes the symbols to be transmitted using the preceding rotation matrix. An apparatus that employs this closed-loop technique is also described.
摘要翻译： 一种用于在发射机和接收机之间提供闭环发射预编码的方法，包括定义包括一组单位旋转矩阵的码本。 接收机确定来自码本的哪个先前的旋转矩阵应该被用于已经被接收的每个子载波。 接收机向发射机发送索引，其中发射机使用索引重构预编码旋转矩阵，并且使用前一个旋转矩阵对要发送的符号进行预编码。 还描述了采用该闭环技术的装置。
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公开(公告)号：US20060233272A1
公开(公告)日：2006-10-19
申请号：US11379003
申请日：2006-04-17
申请人： Vasanthan Raghavan , Eko Onggosanusi , Anand Dabak
发明人： Vasanthan Raghavan , Eko Onggosanusi , Anand Dabak
IPC分类号： H04K1/10
CPC分类号： H04L27/2608 , H04L1/0003 , H04L1/0009 , H04L1/0016 , H04L1/0026
摘要： The present invention provides a transmitter. In one embodiment, the transmitter includes a coefficient circuit configured to generate coefficients of a set of basis waveforms that represent channel quality metrics and a transmit circuit that transmits the coefficients. The present invention also provides a receiver. In one embodiment, the receiver includes a receive circuit configured to receive coefficients of a set of basis waveforms that represent channel quality metrics and a reconstruction circuit configured to reconstruct the channel quality metrics from the coefficients.
摘要翻译： 本发明提供一种发射机。 在一个实施例中，发射机包括被配置为生成表示信道质量度量的一组基本波形的系数的系数电路和发射系数的发射电路。 本发明还提供一种接收机。 在一个实施例中，接收机包括被配置为接收表示信道质量度量的一组基本波形的系数的接收电路，以及被配置为从系数重建信道质量度量的重构电路。
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公开(公告)号：US07649960B2
公开(公告)日：2010-01-19
申请号：US11379003
申请日：2006-04-17
IPC分类号： H04L27/00
CPC分类号： H04L27/2608 , H04L1/0003 , H04L1/0009 , H04L1/0016 , H04L1/0026
摘要： The present invention provides a transmitter. In one embodiment, the transmitter includes a coefficient circuit configured to generate coefficients of a set of basis waveforms that represent channel quality metrics and a transmit circuit that transmits the coefficients. The present invention also provides a receiver. In one embodiment, the receiver includes a receive circuit configured to receive coefficients of a set of basis waveforms that represent channel quality metrics and a reconstruction circuit configured to reconstruct the channel quality metrics from the coefficients.
摘要翻译： 本发明提供一种发射机。 在一个实施例中，发射机包括被配置为生成表示信道质量度量的一组基本波形的系数的系数电路和发射系数的发射电路。 本发明还提供一种接收机。 在一个实施例中，接收机包括被配置为接收表示信道质量度量的一组基本波形的系数的接收电路，以及被配置为从系数重建信道质量度量的重构电路。
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4.发明授权Method and system for improving performance in a sparse multi-path environment using reconfigurable arrays 有权使用可重构阵列改善稀疏多径环境中的性能的方法和系统公开(公告)号：US08000730B2
公开(公告)日：2011-08-16
申请号：US11482530
申请日：2006-07-07
CPC分类号： H01Q3/2605
摘要： A wireless communication system supporting improved performance in a sparse multi-path environment is provided that uses spatially reconfigurable arrays. The system includes a first device and a second device. The first device includes a plurality of antennas and a processor operably coupled to the plurality of antennas. The plurality of antennas are adapted to transmit a first signal toward a the second device and to receive a second signal from the second device. The processor is configured to determine an antenna spacing between the plurality of antennas based on an estimated number of spatial degrees of freedom and an estimated operating signal-to-noise ratio. The second device includes a receiver adapted to receive the first signal from the first device, a transmitter adapted to transmit the second signal toward the first device, and a processor. The processor estimates the number of spatial degrees of freedom and the operating signal-to-noise ratio from the received first signal.
摘要翻译： 提供了一种在稀疏多路径环境中支持改进性能的无线通信系统，其使用空间可重构阵列。 该系统包括第一设备和第二设备。 第一设备包括多个天线和可操作地耦合到多个天线的处理器。 多个天线适于向第二设备发送第一信号并从第二设备接收第二信号。 处理器被配置为基于估计的空间自由度数和估计的操作信噪比来确定多个天线之间的天线间隔。 第二设备包括适于从第一设备接收第一信号的接收机，适于向第一设备发送第二信号的发射机和处理器。 处理器从接收到的第一信号估计空间自由度的数量和操作信噪比。
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5.发明申请Method and system for improving performance in a sparse multi-path environment using reconfigurable arrays 有权用于使用可重配置阵列改善稀疏多径环境中的性能的方法和系统公开(公告)号：US20080009321A1
公开(公告)日：2008-01-10
申请号：US11482530
申请日：2006-07-07
IPC分类号： H04M1/00
CPC分类号： H01Q3/2605
摘要： A wireless communication system supporting improved performance in a sparse multi-path environment is provided that uses spatially reconfigurable arrays. The system includes a first device and a second device. The first device includes a plurality of antennas and a processor operably coupled to the plurality of antennas. The plurality of antennas are adapted to transmit a first signal toward a the second device and to receive a second signal from the second device. The processor is configured to determine an antenna spacing between the plurality of antennas based on an estimated number of spatial degrees of freedom and an estimated operating signal-to-noise ratio. The second device includes a receiver adapted to receive the first signal from the first device, a transmitter adapted to transmit the second signal toward the first device, and a processor. The processor estimates the number of spatial degrees of freedom and the operating signal-to-noise ratio from the received first signal.
摘要翻译： 提供了一种在稀疏多路径环境中支持改进性能的无线通信系统，其使用空间可重构阵列。 该系统包括第一设备和第二设备。 第一设备包括多个天线和可操作地耦合到多个天线的处理器。 多个天线适于向第二设备发送第一信号并从第二设备接收第二信号。 处理器被配置为基于估计的空间自由度数和估计的操作信噪比来确定多个天线之间的天线间隔。 第二设备包括适于从第一设备接收第一信号的接收机，适于向第一设备发送第二信号的发射机和处理器。 处理器从接收到的第一信号估计空间自由度的数量和操作信噪比。
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