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    Method and apparatus for reducing interference in space frequency block coding communication
    3.
    发明授权
    Method and apparatus for reducing interference in space frequency block coding communication 有权
    降低空间频率块编码通信干扰的方法和装置

    公开(公告)号：US08208574B2

    公开(公告)日：2012-06-26

    申请号：US12117373

    申请日：2008-05-08

    申请人： Afshin Haghighat ,  Yingxue Li

    发明人： Afshin Haghighat ,  Yingxue Li

    IPC分类号： H04B7/02

    CPC分类号： H04L27/28 ,  H04B1/38 ,  H04L1/0606 ,  H04L5/0023

    摘要： A method and apparatus of reducing interference in space frequency block coding (SFBC) communication are disclosed. SFBC encoding is performed on at least one pair of symbols. The symbols are assigned to subcarriers in accordance with a frequency assignment pattern assigned to a cell. Different frequency assignment patterns are assigned to neighboring cells. Cells in the network may be divided into a plurality of groups and a different frequency assignment pattern may be assigned to each group of cells. The frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are interlaced to subcarriers mapped to a pair of symbols in a neighbor cell. Alternatively, the frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are shifted in a neighbor cell.

    摘要翻译： 公开了减少空间频率块编码（SFBC）通信中的干扰的方法和装置。 对至少一对符号执行SFBC编码。 根据分配给单元的频率分配模式，将符号分配给子载波。 不同的频率分配模式被分配给相邻小区。 网络中的小区可以被划分成多个组，并且可以将不同的频率分配模式分配给每组小区。 可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波被隔行扫描到映射到相邻小区中的一对符号的副载波。 或者，可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波在相邻小区中移位。

    METHOD AND APPARATUS FOR ESTIMATING A NOISE POWER FOR OFDM
    7.
    发明申请
    METHOD AND APPARATUS FOR ESTIMATING A NOISE POWER FOR OFDM 审中-公开
    用于估计OFDM噪声功率的方法和装置

    公开(公告)号：US20080037620A1

    公开(公告)日：2008-02-14

    申请号：US11835093

    申请日：2007-08-07

    申请人： Afshin Haghighat ,  Seyed M. Hosseinian

    发明人： Afshin Haghighat ,  Seyed M. Hosseinian

    IPC分类号： H04B3/46 ,  H04B17/00

    CPC分类号： H04L25/0204 ,  H04B17/345 ,  H04L1/20 ,  H04L5/0007 ,  H04L5/0048

    摘要： A method and apparatus for estimating noise for orthogonal frequency division multiplexing (OFDM) are disclosed. A time domain difference signal and a frequency domain difference signal between two consecutive received pilot symbols are calculated. A time domain noise power is calculated from the time domain difference signal and a frequency domain noise power is calculated from the frequency domain difference signal. The time domain noise power and the frequency domain noise power are combined to estimate the noise power.

    摘要翻译： 公开了一种用于估计正交频分复用（OFDM）噪声的方法和装置。 计算两个连续的接收导频符号之间的时域差信号和频域差信号。 根据时域差信号计算时域噪声功率，并从频域差分信号计算频域噪声功率。 将时域噪声功率和频域噪声功率组合起来估计噪声功率。

    Method and apparatus for reducing interference in space frequency block coding communication
    9.
    发明授权
    Method and apparatus for reducing interference in space frequency block coding communication 有权
    降低空间频率块编码通信干扰的方法和装置

    公开(公告)号：US08670498B2

    公开(公告)日：2014-03-11

    申请号：US13532267

    申请日：2012-06-25

    申请人： Afshin Haghighat ,  Yingxue Li

    发明人： Afshin Haghighat ,  Yingxue Li

    IPC分类号： H04B7/02

    CPC分类号： H04L27/28 ,  H04B1/38 ,  H04L1/0606 ,  H04L5/0023

    摘要： A method and apparatus of reducing interference in space frequency block coding (SFBC) communication are disclosed. SFBC encoding is performed on at least one pair of symbols. The symbols are assigned to subcarriers in accordance with a frequency assignment pattern assigned to a cell. Different frequency assignment patterns are assigned to neighboring cells. Cells in the network may be divided into a plurality of groups and a different frequency assignment pattern may be assigned to each group of cells. The frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are interlaced to subcarriers mapped to a pair of symbols in a neighbor cell. Alternatively, the frequency assignment pattern may be defined such that subcarriers mapped to a pair of symbols in one cell are shifted in a neighbor cell.

    摘要翻译： 公开了减少空间频率块编码（SFBC）通信中的干扰的方法和装置。 对至少一对符号执行SFBC编码。 根据分配给单元的频率分配模式，将符号分配给子载波。 不同的频率分配模式被分配给相邻小区。 网络中的小区可以被划分成多个组，并且可以将不同的频率分配模式分配给每组小区。 可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波被隔行扫描到映射到相邻小区中的一对符号的副载波。 或者，可以定义频率分配模式，使得映射到一个小区中的一对符号的副载波在相邻小区中移位。

    Long-Term Feedback Transmission And Rank Reporting
    10.
    发明申请
    Long-Term Feedback Transmission And Rank Reporting 有权
    长期反馈传输和排名报告

    公开(公告)号：US20120147933A1

    公开(公告)日：2012-06-14

    申请号：US13162102

    申请日：2011-06-16

    申请人： Yan Li ,  Guodong Zhang ,  Afshin Haghighat

    发明人： Yan Li ,  Guodong Zhang ,  Afshin Haghighat

    IPC分类号： H04B1/38

    CPC分类号： H04L1/0026 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/0639 ,  H04B7/065 ,  H04L1/06 ,  H04L1/20 ,  H04L5/0007 ,  H04L25/03343

    摘要： Disclosed herein are systems and methods for long-term feedback transmitting and rank reporting. According to an aspect, a method of feedback reporting may be implemented at a WTRU. The method may include determining a long-term precoder and a short-term precoder. The method may also include calculating channel quality index (CQI) based on the long-term precoder and the short-term precoder. Further, the method may include transmitting the CQI to a base station.

    摘要翻译： 本文公开了用于长期反馈传送和排名报告的系统和方法。 根据一个方面，可以在WTRU处实现反馈报告的方法。 该方法可以包括确定长期预编码器和短期预编码器。 该方法还可以包括基于长期预编码器和短期预编码器来计算信道质量指数（CQI）。 此外，该方法可以包括将CQI发送到基站。