Method for allowing multi-user orthogonal and non-orthogonal interoperability of code channels

    公开(公告)号:US20060140157A1

    公开(公告)日:2006-06-29

    申请号:US11362884

    申请日:2006-02-27

    Abstract: A technique for allowing a first and second group of users to share access to a communication channel such as a radio channel. A first group of users is typically a legacy group of users such as those using digital CDMA cellular telephone equipment. The second group of users are a group of data users that code their transmissions in different formats optimized for data functionalities. The first group of users share one modulation structure such as, on a reverse link, using unique phase offsets of a common pseudorandom noise (PN) code. The second group of users share another modulation structure but in a manner that is consistent and compatible with the users of the first group. Specifically, the users of the second group may all use the same PN code and code phase offset. However, they are uniquely identified such as, for example, assigning each of them a unique orthogonal code.

    Low cost multiple pattern antenna for use with multiple receiver systems
    44.
    发明申请
    Low cost multiple pattern antenna for use with multiple receiver systems 失效
    低成本多模式天线,用于多个接收机系统

    公开(公告)号:US20050174298A1

    公开(公告)日:2005-08-11

    申请号:US11101914

    申请日:2005-04-08

    Abstract: An antenna assembly includes at least two active or main radiating omni-directional antenna elements arranged with at least one beam control or passive antenna element used as a reflector. The beam control antenna element(s) may have multiple reactance elements that can electrically terminate it to adjust the input or output beam pattern(s) produced by the combination of the active antenna elements and the beam control antenna element(s). More specifically, the beam control antenna element(s) may be coupled to different terminating reactances to change beam characteristics, such as the directivity and angular beamwidth. Processing may be employed to select which terminating reactance to use. Consequently, the radiator pattern of the antenna can be more easily directed towards a specific target receiver/transmitter, reduce signal-to-noise interference levels, and/or increase gain. A Multiple-Input, Multiple-Output (MIMO) processing technique may be employed to operate the antenna assembly with simultaneous beam patterns.

    Abstract translation: 天线组件包括至少两个有源或主辐射全向天线元件,其布置有用作反射器的至少一个光束控制或无源天线元件。 波束控制天线元件可以具有多个电抗元件,其可以电气端接它,以调节由有源天线元件和波束控制天线元件的组合产生的输入或输出波束图案。 更具体地,波束控制天线元件可以耦合到不同的终止电抗以改变诸如方向性和角波束宽度的波束特性。 可以使用处理来选择要使用的终止电抗。 因此,天线的辐射器图案可以更容易地指向特定的目标接收器/发射器,降低信噪比干扰电平和/或增加增益。 可以采用多输入多输出(MIMO)处理技术来操作具有同时波束图案的天线组件。

    Reverse link correlation filter in wireless communication systems
    45.
    发明申请
    Reverse link correlation filter in wireless communication systems 有权
    无线通信系统中的反向链路相关滤波器

    公开(公告)号:US20050041726A1

    公开(公告)日:2005-02-24

    申请号:US10957928

    申请日:2004-10-04

    Abstract: A single, common correlation filter (CF) core is provided in a wireless system using CDMA. A plurality of channels with different data rates are provided in the wireless system. The channels provided in the wireless system include the access channel, the maintenance channel, and the traffic channel in which information (e.g., pilot or data symbols or both) is transmitted at the tier 1, tier 2 and tier 3 rates. The data rate for transmitting the information is programmable by digital signal processor (DSP). A user-unique code, such as a PN code, is applied to the information being transmitted in the channels of the wireless system. The information is QPSK modulated and transmitted in any one of the channels at any data rate. The transmitted information is correlated at the smallest data rate (i.e., the tier 1 rate) in the correlation filter (CF) of the wireless system by time multiplexing delayed versions of the PN code to the correlation filter core. The correlated information is then demultiplexed and pilot aided QPSK demodulated. The demodulated information is summed at the proper integer multiple of the tier 1 rate to achieve the tier 2 and tier 3 rates. The three strongest multipaths (in terms of the received power) are selected in a window or time period for optimal information recovery. Furthermore, three outputs from the demodulated information can be provided and combined for temporal diversity. Spatial diversity is achieved by providing a plurality of antennas at each receiver and a single, common correlation filter at each of the plurality of antennas of the receivers in the wireless system.

    Abstract translation: 在使用CDMA的无线系统中提供单个公共相关滤波器(CF)核。 在无线系统中提供具有不同数据速率的多个信道。 在无线系统中提供的信道包括接入信道,维护信道和业务信道,信道(例如,导频或数据符号或两者)以层1,层2和层3速率被传输。 用于传输信息的数据速率可由数字信号处理器(DSP)编程。 诸如PN码的用户唯一码被应用于在无线系统的频道中发送的信息。 该信息以任何数据速率在任何一个信道中进行QPSK调制和传输。 所发送的信息通过将PN码的延迟版本时间复用到相关滤波器核心,以无线系统的相关滤波器(CF)中的最小数据速率(即,层1速率)相关。 然后将相关信息解复用并进行导频辅助QPSK解调。 解调信息以1级速率的适当整数倍相加,以实现2级和3级速率。 在窗口或时间段中选择三个最强的多路径(以接收功率计),以获得最佳信息恢复。 此外,可以提供来自解调信息的三个输出并将其组合用于时间分集。 通过在每个接收机处提供多个天线以及在无线系统中的接收机的多个天线的每个天线处提供单个公共相关滤波器来实现空间分集。

    Antenna adaptation to manage the active set to manipulate soft hand-off regions
    48.
    发明申请
    Antenna adaptation to manage the active set to manipulate soft hand-off regions 有权
    天线适应管理活动集,以操纵软交接区域

    公开(公告)号:US20070123262A1

    公开(公告)日:2007-05-31

    申请号:US11520132

    申请日:2006-09-13

    Applicant: James Proctor

    Inventor: James Proctor

    CPC classification number: H04W36/18 H04W16/28

    Abstract: A method of managing the number of base station engaged in soft hand-off in a mobile communication system. The method involves manipulating a subscriber based directional antenna so as to control the number of base transceiver stations, pilot channels, beacon signals or other signals detected to be used in soft hand-off processing. The adaptive antennas are modified to manage the number of active set members, such as by manipulating direction, beamwidth, or other antenna parameters.

    Abstract translation: 一种在移动通信系统中管理从事软切换的基站的数量的方法。 该方法涉及操纵基于订户的定向天线,以便控制在软切换处理中检测到的基站收发台,导频信道,信标信号或其他信号的数量。 修改自适应天线以管理活动集合成员的数量,例如通过操纵方向,波束宽度或其他天线参数。

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