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145 条记录 (耗时 0.044 秒)

    PILOT INTERFERENCE CANCELLATION
    105.
    发明申请
    PILOT INTERFERENCE CANCELLATION 有权
    引导干扰消除

    公开(公告)号：US20090252201A1

    公开(公告)日：2009-10-08

    申请号：US12484572

    申请日：2009-06-15

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

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

    IPC分类号： H04B1/707 ,  H04B1/10

    CPC分类号： H04B1/7107 ,  H04B1/71075 ,  H04B2201/70701 ,  H04L25/0224 ,  H04W52/12

    摘要： Techniques for generalized pilot interference cancellation in a communications receiver. In an exemplary embodiment, a residual pilot is cancelled from a post-traffic cancellation signal following initial first-pass pilot cancellation. Residual pilot cancellation is achieved by adding the first-pass cancelled pilot as earlier stored in memory back to the post-traffic cancellation signal, and pilot filtering the resulting signal to generate an improved pilot interference estimate. In an alternative exemplary embodiment, an arbitrary number of iterations may be applied to generate the pilot interference estimate by successively storing each generated pilot interference estimate in memory.

    摘要翻译： 通信接收机中广义导频干扰消除技术。 在示例性实施例中，在初次首次通过导频消除之后，从后业务消除信号中消除残余导频。 剩余导频消除是通过将先前存储在存储器中的首次通过取消的导频返回到业务后消除信号来实现的，并对所得到的信号进行导频过滤以产生改进的导频干扰估计。 在替代示例性实施例中，可以应用任意数量的迭代来通过在存储器中连续地存储每个产生的导频干扰估计来生成导频干扰估计。

    Method and apparatus for beam switching in a wireless communication system
    106.
    发明授权
    Method and apparatus for beam switching in a wireless communication system 有权
    用于无线通信系统中的波束切换的方法和装置

    公开(公告)号：US07400606B2

    公开(公告)日：2008-07-15

    申请号：US10825748

    申请日：2004-04-16

    申请人： Roberto Padovani ,  Paul E. Bender ,  Ahmad Jalali ,  Bruce Judson ,  Charles E. Wheatley, III

    发明人： Roberto Padovani ,  Paul E. Bender ,  Ahmad Jalali ,  Bruce Judson ,  Charles E. Wheatley, III

    IPC分类号： H04B7/204

    CPC分类号： H04W16/12 ,  H04W16/02

    摘要： In a CDMA data communication system capable of variable rate transmission, utilization of beam switching techniques decreases the average interference caused by transmissions of a base station to subscriber stations within a cell, and in neighboring cells. Base stations utilize multiple transmit antennas, each transmitting signals at controlled amplitudes and phases, to form transmit signal corresponding to sector divisions. Data and reference signals are transmitted along sector division beams that alternate according to fixed time slots in order to increase system capacity and data rates by maximizing carrier-to-interference ratios (C/I) measured at subscriber stations.

    摘要翻译： 在能够进行可变速率传输的CDMA数据通信系统中，波束切换技术的利用减少了由基站向小区内和相邻小区中的用户台的传输引起的平均干扰。 基站利用多个发射天线，每个发射天线以受控的幅度和相位传输信号，以形成对应于扇区划分的发射信号。 数据和参考信号沿着根据固定时隙交替的扇区分波束传输，以通过最大化在用户台测量的载波干扰比（C / I）来增加系统容量和数据速率。

    METHOD AND APPARATUS FOR ROBUST HANDOFF IN WIRELESS COMMUNICATION SYSTEMS
    107.
    发明申请
    METHOD AND APPARATUS FOR ROBUST HANDOFF IN WIRELESS COMMUNICATION SYSTEMS 有权
    在无线通信系统中进行稳健手动的方法和装置

    公开(公告)号：US20070105584A1

    公开(公告)日：2007-05-10

    申请号：US11619550

    申请日：2007-01-03

    申请人： Matthew Grob ,  Roberto Padovani ,  Paul Bender ,  Gadi Karmi ,  Robert Kimball ,  Greg Hoagland

    发明人： Matthew Grob ,  Roberto Padovani ,  Paul Bender ,  Gadi Karmi ,  Robert Kimball ,  Greg Hoagland

    IPC分类号： H04B17/00 ,  H04B7/00

    CPC分类号： H04W36/18 ,  H04B17/318 ,  H04W36/30

    摘要： A communication system that allows a soft handoff to be completed, even when the communications link between the active base station and the mobile station deteriorates before the mobile station has received the handoff direction message. The mobile station maintains a list of base stations that the mobile station is in communication with, referred to as an “Active Set”. In addition, the mobile station maintains another list of base stations that are proximate to the base stations in the active set. This list is referred to as the “Neighbor Set”. In accordance with the disclosed method and apparatus, the mobile station places a base station in the active set upon including the base station in a pilot strength measurement message (PSMM). The mobile station monitors transmissions from all of the base stations on the active set to receive a handoff direction message (HDM).

    摘要翻译： 即使在移动台已经接收到切换方向消息之前，即使当活动基站和移动台之间的通信链路恶化时，也能够完成软越区切换的通信系统。 移动台保持移动台与之通信的基站的列表，称为“活动集”。 此外，移动站维护在活动集合中靠近基站的另一个基站列表。 该列表被称为“邻居集”。 根据所公开的方法和装置，移动台在将基站包括在导频强度测量消息（PSMM）中时将基站放置在活动集中。 移动站监视来自主动集合上的所有基站的传输以接收切换方向消息（HDM）。

    Method and apparatus for performing soft hand-off in a wireless communication system
    109.
    再颁专利
    Method and apparatus for performing soft hand-off in a wireless communication system 有权

    公开(公告)号：USRE39177E1

    公开(公告)日：2006-07-11

    申请号：US10302541

    申请日：2002-11-21

    申请人： Roberto Padovani ,  Roy Franklin Quick, Jr.

    发明人： Roberto Padovani ,  Roy Franklin Quick, Jr.

    IPC分类号： H04Q7/20

    CPC分类号： H04W24/10 ,  H04W36/18 ,  H04W48/20

    摘要： A method and apparatus for providing soft handoff in a mobile communication system. In current systems is that the members of active set are determined in accordance with comparisons of measured pilot energy with fixed thresholds. However, the value of providing a redundant communication link to a mobile station depends strongly on the energy of other signals being provided to the mobile station. In the present invention, the signal strengths of other base stations in communication with a mobile station are considered when determining whether adding a base to that set of base stations in communication with the remote station is of sufficient value to justify the impact on system capacity.

    Power control in a cellular system using ES/IO and NT/I0 values
    110.
    发明授权
    Power control in a cellular system using ES/IO and NT/I0 values 有权
    使用ES / IO和NT / I0值的蜂窝系统中的功率控制

    公开(公告)号：US07076264B2

    公开(公告)日：2006-07-11

    申请号：US10170949

    申请日：2002-06-12

    申请人： Paul E. Bender ,  Roberto Padovani

    发明人： Paul E. Bender ,  Roberto Padovani

    IPC分类号： H04B7/00

    CPC分类号： H04W52/24

    摘要： A system and method is taught for controlling a power level of transmissions in a communication system. A first station of the communication system transmits signals on a communication channel and a pilot channel. A second station of the communication system measures a signal to noise ratio of the received signal, determines an expected signal to noise ratio of the received signal, determines an indicator in accordance with said measured signal to noise ratio and the expected signal to noise ratio, and transmits the indicator. The indicator is received at the first station the indicator and determines the power level of the next transmission according to said received indicator. Additionally, methods and systems for the measurement of the signal to noise ratio of the received signal, the determination of the expected signal to noise ratio of the received signal, and the determination of the indicator are disclosed.

    摘要翻译： 教导了一种用于控制通信系统中的传输功率电平的系统和方法。 通信系统的第一站在通信信道和导频信道上发送信号。 通信系统的第二站测量接收信号的信噪比，确定接收信号的期望信噪比，根据所测量的信噪比和期望的信噪比确定指示符， 并发送指示符。 指示符在第一站接收指示符，并根据所接收的指示符确定下一个传输的功率电平。 此外，公开了用于测量接收信号的信噪比的方法和系统，接收信号的预期信噪比的确定以及指示符的确定。