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    Adaptive basis functions in a multicarrier communication system
    1.
    发明申请
    Adaptive basis functions in a multicarrier communication system 失效
    多载波通信系统中的自适应基函数

    公开(公告)号：US20070121741A1

    公开(公告)日：2007-05-31

    申请号：US11291232

    申请日：2005-11-30

    申请人： Clive Tang ,  Giridhar Mandyam

    发明人： Clive Tang ,  Giridhar Mandyam

    IPC分类号： H04K1/10

    CPC分类号： H04L1/0033 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2639 ,  H04L27/265

    摘要： A method for transmitting a signal uses a channel impulse response to determine a sub-carrier frequency function for at least two different basis functions. For each of the at least two sub-carrier frequency functions, a performance measure is predicted using the associated frequency function. These predicted performance measures are then stored and compared. One of the at least two basis functions are selected based on the comparing. A signal to be transmitted is converted from the frequency to the time domain using the selected basis function, and then transmitted over multiple sub-carriers via a time radio-frequency channel. Adaptive modulation, coding, bit and/or power loading may also be used in conjunction with the adaptive basis functions. A transmitter, modulator, and computer program are also described.

    摘要翻译： 用于发送信号的方法使用信道脉冲响应来确定用于至少两个不同基函数的子载波频率函数。 对于至少两个副载波频率函数中的每一个，使用相关联的频率函数来预测性能度量。 然后存储和比较这些预测的性能测量。 基于比较来选择至少两个基本功能之一。 要使用所选择的基本功能将要发送的信号从频率转换到时域，然后经由时间射频信道在多个子载波上发送。 自适应调制，编码，位和/或功率负载也可以与自适应基函数结合使用。 还描述了发射机，调制器和计算机程序。

    Method and apparatus for scheduling and modulation and coding selection for supporting quality of service in transmissions on forward shared radio channels
    2.
    发明授权
    Method and apparatus for scheduling and modulation and coding selection for supporting quality of service in transmissions on forward shared radio channels 有权
    用于调度和编码选择的方法和装置，用于支持前向共享无线电信道上的传输中的服务质量

    公开(公告)号：US06901046B2

    公开(公告)日：2005-05-31

    申请号：US10025609

    申请日：2001-12-26

    申请人： Liangchi Alan Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    发明人： Liangchi Alan Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    IPC分类号： H04L12/56 ,  H04W28/18 ,  H04W72/08 ,  H04W72/12 ,  H04J3/04 ,  H04J3/22

    CPC分类号： H04W28/18 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L47/14 ,  H04L47/50 ,  H04L47/522 ,  H04L47/56 ,  H04L47/621 ,  H04L47/626 ,  H04L49/90 ,  H04W72/12 ,  H04W72/1205

    摘要： The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.

    摘要翻译： 本发明是一种用于控制哪个MS在前向信道上接收下一个分组数据传输的选择的过程和系统，并且选择哪个多个MCS用于前向信道上的分组数据传输。 根据本发明，用于控制BTS（10）将通过前向共享信道向MS（12）发送数据分组的MCS方法的选择处理过程在BTS处存储信息，该信息包含可能 被选择以通过前向共享信道向MS发送数据分组; 从BTS处的MS接收到通过前向信道向MS发送数据分组的质量指示; 以及根据接收到的质量指示，可以用于在前向信道上发送数据分组的多个MCS方法中选择MCS方法。

    Method And Apparatus For Scheduling And Modulation And Coding Selection For Supporting Quality Of Service In Transmissions On Forward Shared Radio Channels
    3.
    发明申请
    Method And Apparatus For Scheduling And Modulation And Coding Selection For Supporting Quality Of Service In Transmissions On Forward Shared Radio Channels 有权
    用于在前向共享无线电信道上支持传输质量的调度和调制和编码选择的方法和装置

    公开(公告)号：US20080144570A1

    公开(公告)日：2008-06-19

    申请号：US12035133

    申请日：2008-02-21

    申请人： Liangchi (Alan) Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    发明人： Liangchi (Alan) Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    IPC分类号： H04Q7/00

    CPC分类号： H04W28/18 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L47/14 ,  H04L47/50 ,  H04L47/522 ,  H04L47/56 ,  H04L47/621 ,  H04L47/626 ,  H04L49/90 ,  H04W72/12 ,  H04W72/1205

    摘要： The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.

    摘要翻译： 本发明是一种用于控制哪个MS在前向信道上接收下一个分组数据传输的选择的过程和系统，并且选择哪个多个MCS用于前向信道上的分组数据传输。 根据本发明，用于控制BTS（10）将通过前向共享信道向MS（12）发送数据分组的MCS方法的选择处理过程在BTS处存储信息，该信息包含可能 被选择以通过前向共享信道向MS发送数据分组; 从BTS处的MS接收到通过前向信道向MS发送数据分组的质量指示; 以及根据接收到的质量指示，可以用于在前向信道上发送数据分组的多个MCS方法中选择MCS方法。

    Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels
    5.
    发明申请
    Method and detector for a novel channel quality indicator for space-time encoded MIMO spread spectrum systems in frequency selective channels 失效
    用于频率选择信道中时空编码MIMO扩频系统的新型信道质量指示符的方法和检测器

    公开(公告)号：US20060013328A1

    公开(公告)日：2006-01-19

    申请号：US10892833

    申请日：2004-07-15

    申请人： Jianzhong Zhang ,  Balaji Raghothaman ,  Yan Wang ,  Giridhar Mandyam

    发明人： Jianzhong Zhang ,  Balaji Raghothaman ,  Yan Wang ,  Giridhar Mandyam

    IPC分类号： H04B7/02 ,  H04L1/02 ,  H04B1/707

    CPC分类号： H04L1/0656 ,  H04B1/7105 ,  H04B1/71055 ,  H04L1/0026 ,  H04L1/20 ,  H04L2025/03426 ,  H04L2025/03617

    摘要： In a jointly encoded (JE), spread spectrum communication MIMO system where a demultiplexed packet is transmitted over multiple streams, two versions of a single channel quality indicator (CQI) is disclosed: generalized SNR or constrained mutual information CMI between the transmitted and received chip vectors. In the receiver, the CMI is constrained so that filtering is suboptimal. The filter bank is preferably LMMSE or MVDR filters that convert the multi-path channel into a single path channel so that joint sequence detection is unnecessary. Detection is instead by a per-Walsh code architecture, wherein a plurality of Walsh-code specific detectors in parallel detect bits or symbols from the single-channel chips after downconverting chip to symbols. Link to system mapping is realizable using the disclosed CQI for a JE MIMO system in that the CQI or related information is returned to the transmitter, which adapts coding rate and/or modulation for the channel as represented by the CQI.

    摘要翻译： 在通过多个流传输解复用的分组的扩频通信MIMO系统中，公开了单个信道质量指示符（CQI）的两个版本：发射和接收的芯片之间的广义SNR或受限互相信息CMI 向量 在接收机中，CMI被约束，使得过滤不是最佳的。 滤波器组优选地将多路径信道转换成单路径信道的LMMSE或MVDR滤波器，使得不需要联合序列检测。 检测是逐个沃尔什码代码架构，其中多个沃尔什码专用检测器在将芯片下变频到符号之后并行地检测来自单通道芯片的位或符号。 使用所公开的用于JE MIMO系统的CQI可实现与系统映射的链接，因为CQI或相关信息被返回给发射机，其适配由CQI表示的信道的编码率和/或调制。

    Method and apparatus for scheduling and modulation and coding selection for supporting quality of service in transmissions on forward shared radio channels
    6.
    发明授权
    Method and apparatus for scheduling and modulation and coding selection for supporting quality of service in transmissions on forward shared radio channels 有权
    用于调度和编码选择的方法和装置，用于支持前向共享无线电信道上的传输中的服务质量

    公开(公告)号：US08774102B2

    公开(公告)日：2014-07-08

    申请号：US12035133

    申请日：2008-02-21

    申请人： Liangchi (Alan) Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    发明人： Liangchi (Alan) Hsu ,  Mark W. Cheng ,  Giridhar Mandyam

    IPC分类号： H04W4/00 ,  H04L12/56 ,  H04L1/00 ,  H04L12/54 ,  H04W28/18 ,  H04W72/12

    CPC分类号： H04W28/18 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0016 ,  H04L47/14 ,  H04L47/50 ,  H04L47/522 ,  H04L47/56 ,  H04L47/621 ,  H04L47/626 ,  H04L49/90 ,  H04W72/12 ,  H04W72/1205

    摘要： The invention is a process and system for controlling selection of which MS is to receive the next packet data transmission on a forward channel and selection of which plural MCS is to be used for the packet data transmissions on the forward channel. A process for controlling selection of MCS method to be used by a BTS (10) to transmit data packets over a forward shared channel to a MS (12) in accordance with the invention stores information at the BTS, the information containing MCS methods which may be selected to transmit data packets over the forward shared channel to the MS; receiving from the MS at the BTS a quality indication of transmission of data packets over the forward channel to the MS; and selecting a MCS method from a plurality of MCS methods which may be used to transmit data packets on the forward channel dependent upon the received quality indication.

    摘要翻译： 本发明是一种用于控制哪个MS在前向信道上接收下一个分组数据传输的选择的过程和系统，并且选择哪个多个MCS用于前向信道上的分组数据传输。 根据本发明，用于控制BTS（10）将通过前向共享信道向MS（12）发送数据分组的MCS方法的选择处理的过程在BTS处存储信息，该信息包含可能 被选择以通过前向共享信道向MS发送数据分组; 从BTS处的MS接收到通过前向信道向MS发送数据分组的质量指示; 以及根据接收到的质量指示，可以用于在前向信道上发送数据分组的多个MCS方法中选择MCS方法。

    Fourier-transform based linear equalization for CDMA downlink
    9.
    发明授权
    Fourier-transform based linear equalization for CDMA downlink 失效
    用于CDMA下行链路的基于傅里叶变换的线性均衡

    公开(公告)号：US06873596B2

    公开(公告)日：2005-03-29

    申请号：US10436618

    申请日：2003-05-13

    申请人： Jianzhong Zhang ,  Tejas Bhatt ,  Giridhar Mandyam

    发明人： Jianzhong Zhang ,  Tejas Bhatt ,  Giridhar Mandyam

    IPC分类号： H04B7/08 ,  H04L25/03 ,  H04J11/00

    CPC分类号： H04L25/0242 ,  H04B7/0845 ,  H04L25/0204 ,  H04L25/021 ,  H04L25/0256 ,  H04L25/03159 ,  H04L2025/0342 ,  H04L2025/03426 ,  H04L2025/03522 ,  H04L2025/03605

    摘要： In the reception of a CDMA signal, the receiving unit performs a simplified process of linear equalization that eliminates the need for inverting the correlation matrix. For the single antenna reception case, the correlation matrix is approximated to a good degree by a circulation matrix that is diagonalized by FFT operations, thus substituting two FFTs and one IFFT having a complexity of O({fraction (3/2)}LFlog LF) for the direct matrix inversion having a complexity of O(LF3). The extension of this method uses a multiple antenna reception system with oversampling.

    摘要翻译： 在CDMA信号的接收中，接收单元执行线性均衡的简化处理，消除了反相相关矩阵的需要。 对于单天线接收情况，相关矩阵通过由FFT操作对角化的循环矩阵来很好地近似，从而将复杂度为O（{fraction（3 / 2LFlog LF））的两个FFT和一个IFFT替换为 具有O（LF <3>）复杂度的直接矩阵反演，该方法的扩展使用具有过采样的多天线接收系统。