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    Carrier assignment for multi-carrier modulation in wireless communication
    1.
    发明授权
    Carrier assignment for multi-carrier modulation in wireless communication 有权

    公开(公告)号：US10064179B2

    公开(公告)日：2018-08-28

    申请号：US12622202

    申请日：2009-11-19

    申请人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    发明人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    IPC分类号： H04L27/26 ,  H04W72/04 ,  H04L5/00 ,  H04W52/34 ,  H04W52/36

    CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems
    3.
    发明授权
    Peak-to-average power ratio management for multi-carrier modulation in wireless communication systems 有权
    无线通信系统中多载波调制的峰均功率比管理

    公开(公告)号：US08422434B2

    公开(公告)日：2013-04-16

    申请号：US10368733

    申请日：2003-02-18

    申请人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    发明人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    IPC分类号： H04W4/00

    CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    摘要翻译： 用于管理无线通信系统中多载波调制的峰均功率比（PAPR）的技术。 多址系统中的不同终端可能具有不同的所需传输功率。 分配给每个终端的载波数量取决于其所需的发射功率。 具有更高所需发射功率的终端可以被分配较少的载波（与较小的PAPR相关联），以允许功率放大器在较高的功率电平下工作。 由于功率放大器在较低的功率电平下工作，所以具有较低所需发射功率的终端可以分配更多的载波（与更高的PAPR相关联）。 分配给终端的特定载波也可以由其发射功率电平来确定，以减少带外发射。 具有更高要求的发射功率的终端可以被分配到靠近工作频带中间的载波，并且具有较低所需发射功率的终端可以被分配给带边缘附近的载波。

    PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS
    4.
    发明申请
    PEAK-TO-AVERAGE POWER RATIO MANAGEMENT FOR MULTI-CARRIER MODULATION IN WIRELESS COMMUNICATION SYSTEMS 有权
    无线通信系统中多载波调制的平均功率比率管理

    公开(公告)号：US20090040975A1

    公开(公告)日：2009-02-12

    申请号：US12170560

    申请日：2008-07-10

    申请人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    发明人： Rajiv Vijayan ,  Avneesh Agrawal ,  Sanjay Jha

    IPC分类号： H04W4/00

    CPC分类号： H04W72/0453 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0066 ,  H04L27/2614 ,  H04W52/343 ,  H04W52/367

    摘要： Techniques for managing peak-to-average power ratio (PAPR) for multi-carrier modulation in wireless communication systems. Different terminals in a multiple-access system may have different required transmit powers. The number of carriers to allocate to each terminal is made dependent on its required transmit power. Terminals with higher required transmit powers may be allocated fewer carriers (associated with smaller PAPR) to allow the power amplifier to operate at higher power levels. Terminals with lower required transmit powers may be allocated more carriers (associated with higher PAPR) since the power amplifier is operated at lower power levels. The specific carriers to assign to the terminals may also be determined by their transmit power levels to reduce out-of-band emissions. Terminals with higher required transmit powers may be assigned with carriers near the middle of the operating band, and terminals with lower required transmit powers may be assigned with carriers near the band edges.

    摘要翻译： 用于管理无线通信系统中多载波调制的峰均功率比（PAPR）的技术。 多址系统中的不同终端可能具有不同的所需传输功率。 分配给每个终端的载波数量取决于其所需的发射功率。 具有更高所需发射功率的终端可以被分配较少的载波（与较小的PAPR相关联），以允许功率放大器在较高的功率电平下工作。 由于功率放大器在较低的功率电平下工作，所以具有较低所需发射功率的终端可以分配更多的载波（与更高的PAPR相关联）。 分配给终端的特定载波也可以由其发射功率电平来确定，以减少带外发射。 具有更高要求的发射功率的终端可以被分配到靠近工作频带中间的载波，并且具有较低所需发射功率的终端可以被分配给带边缘附近的载波。

    Accumulated phase measurement using open-loop phase estimation
    6.
    发明授权
    Accumulated phase measurement using open-loop phase estimation 有权
    使用开环相位估计的累积相位测量

    公开(公告)号：US06282500B1

    公开(公告)日：2001-08-28

    申请号：US09149467

    申请日：1998-09-09

    申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Nadav Levanon

    发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Nadav Levanon

    IPC分类号： H04B110

    CPC分类号： G01S1/045 ,  G01R29/0892 ,  H03J7/04 ,  H04L27/0014 ,  H04L2027/0067

    摘要： An apparatus and method for generating an accumulated phase measurement of a communications signal over a predetermined time interval. A frequency estimate of the signal is generated; the frequency estimate is then converted to a coarse phase measurement. A phase error is generated based on the frequency estimate; the phase error is then converted to a fine phase measurement. The coarse and fine phase measurements are summed to yield an accumulated phase measurement.

    摘要翻译： 一种用于在预定时间间隔内产生通信信号的累积相位测量的装置和方法。 产生信号的频率估计; 然后将频率估计值转换为粗略相位测量。 基于频率估计产生相位误差; 然后将相位误差转换为精细相位测量。 粗和细相位测量相加以产生累积相位测量。

    RATE ADAPTIVE TRANSMISSION SCHEME FOR MIMO SYSTEMS
    8.
    发明申请
    RATE ADAPTIVE TRANSMISSION SCHEME FOR MIMO SYSTEMS 有权
    用于MIMO系统的速率自适应传输方案

    公开(公告)号：US20100119005A1

    公开(公告)日：2010-05-13

    申请号：US12690307

    申请日：2010-01-20

    申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

    发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

    IPC分类号： H04B7/02

    CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

    摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

    摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。

    Rate adaptive transmission scheme for MIMO systems
    10.
    发明授权
    Rate adaptive transmission scheme for MIMO systems 有权
    MIMO系统速率自适应传输方案

    公开(公告)号：US08619717B2

    公开(公告)日：2013-12-31

    申请号：US12690307

    申请日：2010-01-20

    申请人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

    发明人： Avneesh Agrawal ,  Rajiv Vijayan ,  Tamer Kadous

    IPC分类号： H04B7/00

    CPC分类号： H04L1/0618 ,  H04B7/0417 ,  H04B7/0443 ,  H04B7/0465 ,  H04B7/0615 ,  H04B7/0891 ,  H04W52/34 ,  H04W52/42

    摘要： A rate adaptive transmission scheme for MIMO systems, which can transmit a variable number of data symbol streams, provide transmit diversity for each data symbol stream, and fully utilize the total transmit power of the system and the full power of each antenna. In one method, at least one data symbol stream is received for transmission from a plurality of antennas. Each data symbol stream is scaled with a respective weight corresponding to the amount of transmit power allocated to that stream. The scaled data symbol stream(s) are multiplied with a transmit basis matrix to provide a plurality of transmit symbol streams for the plurality of antennas. The transmit basis matrix (e.g., a Walsh-Hadamard matrix or a DFT matrix) is defined such that each data symbol stream is transmitted from all antennas and each transmit symbol stream is transmitted at (or near) the full power for the associated antenna.

    摘要翻译： 可以传输可变数量的数据符号流的MIMO系统的速率自适应传输方案为每个数据符号流提供发射分集，并且充分利用系统的总发射功率和每个天线的全功率。 在一种方法中，接收至少一个数据符号流用于从多个天线发射。 每个数据符号流用对应于分配给该流的发射功率的量的相应权重进行缩放。 缩放的数据符号流与发射基矩阵相乘以为多个天线提供多个发射符号流。 定义发射基矩阵（例如，沃尔什 - 哈达玛矩阵或DFT矩阵），使得每个数据符号流从所有天线发送，并且每个发射符号流以（或接近）相关天线的全功率发射。