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    Method and apparatus for enhancing communication reception at a wireless communication terminal
    1.
    发明授权
    Method and apparatus for enhancing communication reception at a wireless communication terminal 失效
    一种用于增强无线通信终端的通信接收的方法和装置

    公开(公告)号：US6131016A

    公开(公告)日：2000-10-10

    申请号：US920138

    申请日：1997-08-27

    申请人： Lawrence Joel Greenstein ,  Nelson Ray Sollenberger

    发明人： Lawrence Joel Greenstein ,  Nelson Ray Sollenberger

    IPC分类号： H04B7/06 ,  H04L1/06 ,  H04L27/26 ,  H04Q7/38

    CPC分类号： H04L1/06 ,  H04B7/061 ,  H04B7/0626 ,  H04L5/0023 ,  H04L5/0051 ,  H04L5/006 ,  H04L5/0091 ,  H04L2025/03414 ,  H04L2025/03426 ,  H04L2025/03802 ,  H04L25/0228 ,  H04L25/03343

    摘要： A system provides transmit diversity with feedback to enhance the reception of communication signals at a wireless communication terminal. Multiple antennae are provided at the base station. The multiple antennae transmit multi-carrier information signals such as OFDM including pilot tones. The wireless communication terminal receives the pilot tones and performs processing on those tones to detect the relationship between the information signals transmitted from the various antennae of the base station. A feedback signal, based on the comparison of the pilot tones communicates back to the base station information about the channels of the respective transmit antennae to the terminals. The base station modifies the transmission processing associated with the various transmit antennae based upon the feedback signal. The modified processing improves the reception of the information signals at the wireless communication terminal.

    摘要翻译： 系统提供具有反馈的发射分集以增强无线通信终端处的通信信号的接收。 在基站提供多个天线。 多个天线发射诸如OFDM的多载波信息信号，包括导频音调。 无线通信终端接收导频音，并对这些音调进行处理，以检测从基站的各个天线发送的信息信号之间的关系。 基于导频音的比较的反馈信号将关于各终端的各个发射天线的信道的基站信息通信回来。 基站根据反馈信号修改与各种发送天线相关联的发送处理。 经修改的处理改善了无线通信终端处的信息信号的接收。

    Method and system for determining gain reductions due to scatter on wireless paths with directional antennas
    4.
    发明授权
    Method and system for determining gain reductions due to scatter on wireless paths with directional antennas 失效
    用于确定由于在具有定向天线的无线路径上的分散引起的增益减小的方法和系统

    公开(公告)号：US06304213B1

    公开(公告)日：2001-10-16

    申请号：US09480992

    申请日：2000-01-11

    申请人： Vinko Erceg ,  Lawrence Joel Greenstein

    发明人： Vinko Erceg ,  Lawrence Joel Greenstein

    IPC分类号： H01Q300

    CPC分类号： H01Q3/02 ,  H01Q3/26

    摘要： A system and method for statistically modeling the operation of a directional terminal antenna in a wireless link. When using a directional terminal antenna, received power may be enhanced by as much as the antenna gain. In local scattering, however, the enhancement will be smaller. The system and method model this decrement, known as the gain reduction factor, &Dgr;, for fixed suburban paths, based on angle-of-arrival measurements. The system and method also provide the capability to statistically model the transmission performance of a directional terminal antenna in a wireless link while analyzing influences of antenna height, antenna beamwidth, distance and season.

    摘要翻译： 一种用于对无线链路中的定向终端天线的操作进行统计建模的系统和方法。 当使用定向终端天线时，可以通过与天线增益一样多的方式增强接收功率。 然而，在局部散射中，增强将更小。 系统和方法基于到达度测量模型，将该减量称为固定郊区路径的增益减小因子DELTA。 该系统和方法还提供了对无线链路中定向终端天线的传输性能进行统计建模的能力，同时分析了天线高度，天线波束宽度，距离和季节的影响。

    Estimating PCS traffic from radio port measurements
    5.
    发明授权
    Estimating PCS traffic from radio port measurements 失效
    从无线电端口测量估计PCS流量

    公开(公告)号：US5794153A

    公开(公告)日：1998-08-11

    申请号：US578121

    申请日：1995-12-26

    申请人： Sirikiat Ariyavisitakul ,  Lawrence Joel Greenstein

    发明人： Sirikiat Ariyavisitakul ,  Lawrence Joel Greenstein

    IPC分类号： H04B17/00 ,  H04W16/32 ,  H04W88/08 ,  H04B7/00

    CPC分类号： H04W16/32 ,  H04B17/327 ,  H04W88/085

    摘要： Average local traffic load in a simulcast radio system is estimated to achieve efficient resource sharing and dynamic reconfiguration of the simulcast areas. A method for estimating the average local traffic load uses relative power measurements at each radio port (or distributed antenna element). The estimating method is applicable to both code-division multiple access (CDMA) and time-division multiple access (TDMA) systems. The method provides accurate estimates of the actual radio port traffic over various system conditions, while requiring only an approximate knowledge of the radio propagation environment.

    摘要翻译： 估计联播无线电系统中的平均本地流量负载可以实现有效的资源共享和联播区域的动态重新配置。 用于估计平均本地业务负载的方法使用在每个无线端口（或分布式天线元件）处的相对功率测量。 该估计方法适用于码分多址（CDMA）和时分多址（TDMA）系统。 该方法提供了在各种系统条件下实际无线电端口业务的精确估计，同时仅需要对无线电传播环境的近似知识。