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16 条记录 (耗时 0.037 秒)

    Systems and methods for channel allocation for forward-link multi-user systems
    7.
    发明授权
    Systems and methods for channel allocation for forward-link multi-user systems 有权

    公开(公告)号：US09125061B2

    公开(公告)日：2015-09-01

    申请号：US10400882

    申请日：2003-03-28

    申请人： Jianming Wu ,  Wen Tong ,  Daniel Boudreau

    发明人： Jianming Wu ,  Wen Tong ,  Daniel Boudreau

    IPC分类号： H04B7/216 ,  H04W16/12 ,  H04W72/04 ,  H04W72/12

    CPC分类号： H04W16/12 ,  H04W72/0453 ,  H04W72/1257

    摘要： A method of allocating bandwidth is provided which involves for each sector of a plurality of sectors in a cell, using a respective subset of a total bandwidth; wherein for any two adjacent sectors, the respective subsets only partially overlap. A scheduling method is provided which involves for each sector, scheduling users for transmission on the respective subset of the total bandwidth by: for a given transmitter, allocating a respective fraction of capacity associated with the available bandwidth to each of at least two users selected from a plurality of users by performing an optimization for a selected scheduler design, the optimization selecting the at least two users and the optimization determining for each user the respective fraction of capacity; generating and transmitting a signal in which each of the at least two users has the respective fraction of capacity.

    Multiple threshold scheduler
    8.
    发明授权
    Multiple threshold scheduler 有权
    多阈值调度器

    公开(公告)号：US07792534B2

    公开(公告)日：2010-09-07

    申请号：US10164063

    申请日：2002-06-05

    申请人： Jianming Wu ,  Wen Tong ,  Daniel Boudreau

    发明人： Jianming Wu ,  Wen Tong ,  Daniel Boudreau

    IPC分类号： H04W72/00

    CPC分类号： H04W72/1252 ,  H04L1/0002 ,  H04L47/14 ,  H04L47/24 ,  H04W72/1257

    摘要： The present invention provides different scheduling criteria depending on overall system performance in an effort to maintain fairness among mobile terminals and sustain a required QoS level. The invention is particularly effective for multi-carrier systems, wherein scheduling must also take into consideration the carrier used to transmit the scheduled data. In one embodiment, the present invention determines the spread of throughput rates for all mobile terminals being served by a given base station and bases the scheduling criteria thereon. Preferably, a standard deviation calculation is used to measure the throughput spread. The standard deviation of throughput associated with a collective group of mobile terminals is indicative of the differences between the lowest and highest throughputs with respect to the average throughput for the collective group of mobile terminals.

    摘要翻译： 本发明提供了不同的调度标准，取决于整体系统性能，以保持移动终端之间的公平性并维持所需的QoS水平。 本发明对于多载波系统特别有效，其中调度还必须考虑用于发送调度数据的载波。 在一个实施例中，本发明确定由给定基站服务的所有移动终端的吞吐率的扩展，并且基于其上的调度准则。 优选地，使用标准偏差计算来测量吞吐量扩展。 与集体移动终端组相关联的吞吐量的标准偏差指示相对于集体移动终端的平均吞吐量的最低和最高吞吐量之间的差异。

    System and method for I/Q imbalance compensation
    9.
    发明授权
    System and method for I/Q imbalance compensation 有权
    用于I / Q不平衡补偿的系统和方法

    公开(公告)号：US07869538B2

    公开(公告)日：2011-01-11

    申请号：US11878283

    申请日：2007-07-23

    申请人： Christian Dubuc ,  Daniel Boudreau ,  William R. Kirkland

    发明人： Christian Dubuc ,  Daniel Boudreau ,  William R. Kirkland

    IPC分类号： H04L27/00

    CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/364 ,  H04L27/3863 ,  H04L2027/0016

    摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot. symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.

    摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）飞行员。 符号分别由分别位于信道带宽中的第一（703）和第（704）个预定采样频率的第一（701）和第二（702）导频载波表示。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。

    System and method for I/Q imbalance compensation
    10.
    发明申请
    System and method for I/Q imbalance compensation 有权
    用于I / Q不平衡补偿的系统和方法

    公开(公告)号：US20070263667A1

    公开(公告)日：2007-11-15

    申请号：US11878283

    申请日：2007-07-23

    申请人： Christian Dubuc ,  Daniel Boudreau ,  William Kirkland

    发明人： Christian Dubuc ,  Daniel Boudreau ,  William Kirkland

    IPC分类号： H04B3/10

    CPC分类号： H04L5/0048 ,  H04L5/0007 ,  H04L25/0226 ,  H04L25/0228 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/364 ,  H04L27/3863 ,  H04L2027/0016

    摘要： A transmitter (102) generates a first set of data symbols and a first pilot symbol (601) at a first time, and a second set of data symbols and a second pilot symbol (602) at a different, second time. The first (601) and second (602) pilot. symbols are each represented by first (701) and second (702) pilot carriers, respectively, located at first (703) and second (704) predetermined sample frequencies, respectively, in a channel bandwidth. For the first pilot symbol (601), the first (701) and second (702) pilot carriers have first and second predetermined values, respectively. For the second pilot symbol (602), the first (701) and second (702) pilot carriers have third and fourth predetermined values, respectively. A receiver (104) measures the first, second, fourth and third predetermined values responsive to receiving the first (601) and second (602) pilot symbols to determine first, second, third and fourth estimates of channel distortion, respectively, for compensating and recovering the first and the second sets of data symbols.

    摘要翻译： 发射机（102）在不同的第二时间产生第一组数据符号和第一导频符号（601），第二组数据符号和第二导频符号（602）。 第一（601）和第二（602）飞行员。 符号分别由分别位于信道带宽中的第一（703）和第（704）个预定采样频率的第一（701）和第二（702）导频载波表示。 对于第一导频符号（601），第一（701）和第二（702）导频载波分别具有第一和第二预定值。 对于第二导频符号（602），第一（701）和第二（702）导频载波分别具有第三和第四预定值。 接收器（104）响应于接收到第一（601）和第二（602）导频符号来测量第一，第二，第四和第三预定值，以分别确定信道失真的第一，第二，第三和第四估计，用于补偿和 恢复第一和第二组数据符号。