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    Method and apparatus for canceling pilot interference in a wireless communication system
    6.
    发明申请
    Method and apparatus for canceling pilot interference in a wireless communication system 审中-公开
    用于消除无线通信系统中的导频干扰的方法和装置

    公开(公告)号：US20050013350A1

    公开(公告)日：2005-01-20

    申请号：US10921428

    申请日：2004-08-17

    申请人： Alessandro Coralli ,  Henry Pfister ,  Jilei Hou ,  John Smee ,  Roberto Padovani ,  Brian Butler ,  Jeffrey Levin ,  Thomas Wilborn ,  Paul Bender

    发明人： Alessandro Coralli ,  Henry Pfister ,  Jilei Hou ,  John Smee ,  Roberto Padovani ,  Brian Butler ,  Jeffrey Levin ,  Thomas Wilborn ,  Paul Bender

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7107 ,  H04B2201/70701

    摘要： Methods and systems for estimating and canceling pilot interference in a wireless (e.g., CDMA) communication system. In one method, a received signal comprised of a number of signal instances, each including a pilot, is initially processed to provide data samples. Each signal instance's pilot interference may be estimated by despreading the data samples with a spreading sequence for the signal instance, channelizing the despread data to provide pilot symbols, filtering the pilot symbols to estimate the channel response of the signal instance, and multiplying the estimated channel response with the spreading sequence. The pilot interference estimates due to a plurality of interfering multipaths are accumulated to derive the total pilot interference, which is subtracted from the data samples to provide pilot-canceled data samples. These samples are then processed to derive demodulated data for each of at least one (desired) signal instance in the received signal.

    摘要翻译： 用于估计和消除无线（例如，CDMA）通信系统中的导频干扰的方法和系统。 在一种方法中，最初处理包括多个信号实例（每个包括导频）的接收信号以提供数据样本。 每个信号实例的导频干扰可以通过用信号实例的扩展序列解扩数据样本来估计，对解扩数据进行信道化以提供导频符号，对导频符号进行滤波以估计信号实例的信道响应，并将估计信道 响应与扩展序列。 由多个干扰多径导致的导频干扰估计被累加以导出总导频干扰，其从数据样本中减去以提供导频取消的数据采样。 然后处理这些样本以便为接收信号中的至少一个（期望的）信号实例中的每一个导出解调数据。

    Iterative interference cancellation system and method
    8.
    发明申请
    Iterative interference cancellation system and method 有权
    迭代干扰消除系统及方法

    公开(公告)号：US20070093261A1

    公开(公告)日：2007-04-26

    申请号：US11407570

    申请日：2006-04-19

    申请人： Jilei Hou ,  Joseph Soriaga ,  John Smee ,  Jinghu Chen

    发明人： Jilei Hou ,  Joseph Soriaga ,  John Smee ,  Jinghu Chen

    IPC分类号： H04B1/10 ,  H04B7/00 ,  H04B1/00

    CPC分类号： H04B1/7085 ,  H04B1/71072 ,  H04B1/7117

    摘要： A system and method for Interference Cancellation (IC). One aspect relates to iterative interference cancellation with iterative finger delay adaptation. The interference cancellation method comprises receiving multi-paths of a signal; and performing iterative interference cancellation to remove multi-path interference, wherein the performing iterative IC comprises estimating a Signal-to-Interference-plus-Noise Ratio (SINR) at each of a plurality of pre-determined rake receiver finger delays, and performing successive Channel Estimation (CE) and IC on rake receiver fingers according to their estimated SINRs, and wherein the CE of a next finger does not start until interference of a previous finger is removed from a sample buffer. The method may further comprise improving estimated rake receiver finger delay, and each iteration decreases the amount of interference observed by each finger.

    摘要翻译： 一种用于干扰消除（IC）的系统和方法。 一个方面涉及具有迭代手指延迟适应的迭代干扰消除。 干扰消除方法包括：接收信号的多路径; 以及执行迭代干扰消除以去除多路径干扰，其中所述执行迭代IC包括在多个预定的耙机接收机手指延迟中的每一个处估计信号与干扰加噪声比（SINR），并且执行连续 根据其估计的SINR，在瑞克接收机手指上的信道估计（CE）和IC，并且其中下一个手指的CE不开始，直到先前手指的干扰从样本缓冲器中移除。 该方法还可以包括改进估计的瑞克接收机手指延迟，并且每次迭代减少每个手指观察到的干扰量。

    Reverse link interference cancellation
    9.
    发明申请
    Reverse link interference cancellation 有权
    反向链路干扰消除

    公开(公告)号：US20070040704A1

    公开(公告)日：2007-02-22

    申请号：US11334977

    申请日：2006-01-18

    申请人： John Smee ,  Jilei Hou ,  Roberto Padovani ,  Peter Black ,  Kenneth Easton

    发明人： John Smee ,  Jilei Hou ,  Roberto Padovani ,  Peter Black ,  Kenneth Easton

    IPC分类号： B64D47/06

    CPC分类号： H04B1/7107 ,  H04W52/12

    摘要： A method and system for reverse link interference cancellation. One method comprises demodulating and decoding at least one signal sent from at least one access terminal and received by a first base station, sending demodulated, decoded information of the signal to a second base station, reconstructing the signal at the second base station, and subtracting the reconstructed signal from a buffer at the second base station.

    摘要翻译： 一种用于反向链路干扰消除的方法和系统。 一种方法包括对从至少一个接入终端发送并由第一基站接收的至少一个信号进行解调和解码，向第二基站发送解调后的解码的信号信息，重构第二基站的信号，以及减去 来自第二基站的缓冲器的重建信号。

    Method and apparatus for interference control in wireless communication systems
    10.
    发明申请
    Method and apparatus for interference control in wireless communication systems 审中-公开
    无线通信系统中干扰控制的方法和装置

    公开(公告)号：US20060229089A1

    公开(公告)日：2006-10-12

    申请号：US11102134

    申请日：2005-04-07

    申请人： Yeliz Tokgoz ,  Mingxi Fan ,  John Smee ,  Jilei Hou

    发明人： Yeliz Tokgoz ,  Mingxi Fan ,  John Smee ,  Jilei Hou

    IPC分类号： H04B7/005

    CPC分类号： H04B17/345 ,  H04B7/0848 ,  Y02D70/00 ,  Y02D70/444

    摘要： Embodiments disclosed herein relate to providing effective interference control in a wireless communication system. In one embodiment, a method for determining an interference level in a wireless communication system is described, including: determining a rise-over-thermal (RoT) metric based on an RoT received at each receiver antenna of an access network, the RoT relating to a ratio of a total energy to a thermal energy received at each receiver antenna; determining an interference-reduction factor (ρ) in relation to an interference energy reduced from the total energy received at each receiver antenna; and determining an effective rise-over-thermal (RoTeff) based on the RoT metric and the interference-reduction factor, the RoTeff relating to the interference level in the wireless communication system. The method may further include comparing the RoTeff with a threshold and relating the result of the comparison (e.g., the sector loading status) to each access terminal in communication with the access network.

    摘要翻译： 本文公开的实施例涉及在无线通信系统中提供有效的干扰控制。 在一个实施例中，描述了一种用于确定无线通信系统中的干扰电平的方法，包括：基于在接入网络的每个接收机天线处接收的RoT来确定上升热（RoT）度量，所述RoT与 在每个接收天线处接收的总能量与热能的比率; 确定相对于从每个接收机天线处接收的总能量减少的干扰能量的干扰减少因子（rho）; 并且基于RoT度量和干扰减少因子确定与无线电中的干扰电平有关的RoT eff 的有效上升热（RoT < 通讯系统 该方法还可以包括比较阈值和将比较结果（例如，扇区加载状态）与接入网络通信的每个接入终端相关联。