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    Apparatus and method for diversity combining
    81.
    发明授权
    Apparatus and method for diversity combining 失效
    用于分集组合的装置和方法

    公开(公告)号：US5889826A

    公开(公告)日：1999-03-30

    申请号：US893560

    申请日：1997-07-11

    Applicant: Hideaki Takahashi

    Inventor： Hideaki Takahashi

    IPC: H04L27/22 ,  H04B7/08 ,  H04L1/06

    CPC classification number: H04L1/06 ,  H04B7/0865

    Abstract: A diversity combiner includes a plurality of branch receiving sections each receiving a QPSK modulation signal and a vector combiner. Each of the branch receiving sections includes a level detector which detects a signal level from the QPSK modulation signal, a phase difference detector which detects a phase difference from the QPSK modulation signal in each bit interval, and a data transformer which transforms polar data consisting of the signal level and the phase difference into rectangular data consisting of two rectangular coordinate values. The rectangular data obtained by the each branch receiving sections is combined by the vector combiner to produce combined rectangular data which is in turn transformed to combined polar data.

    Abstract translation: 分集组合器包括多个分支接收部分，每个分支接收部分接收QPSK调制信号和矢量组合器。 每个分支接收部分包括检测来自QPSK调制信号的信号电平的电平检测器，在每个位间隔中检测来自QPSK调制信号的相位差的相位差检测器，以及变换由 将信号电平和相位差转换成由两个直角坐标值组成的矩形数据。 通过矢量组合器将由每个分支接收部分获得的矩形数据组合以产生组合的矩形数据，该组合的矩形数据又被转换成组合的极坐标数据。

    Diversity receiver
    83.
    发明授权
    Diversity receiver 失效
    分集接收机

    公开(公告)号：US5757866A

    公开(公告)日：1998-05-26

    申请号：US559162

    申请日：1995-11-10

    Applicant: Hideyuki Kannari ,  Manabu Shibata ,  Hiroki Oikawa

    Inventor： Hideyuki Kannari ,  Manabu Shibata ,  Hiroki Oikawa

    IPC: H04B7/08 ,  H04B7/10

    CPC classification number: H04B7/0865 ,  H04B7/0842

    Abstract: A diversity receiver respectively receiving signals in two branches includes two demodulating sections for producing respective amplitude and phases of received signals at a unit of symbol. The receiver includes a memory access section for producing an amplitude ratio of the amplitude of the received signals and a phase difference between the phases of the received signals. The receiver further includes a storage section for storing at least one relative phase difference between a phase of a vector-combined signal combined based on the received signals and one of the phases of the received signals for an address given by the amplitude ratio and the phase difference of the received signals. The phase of the vector-combined signal is previously calculated based on the amplitude ratio, the phase difference, and the one of the phases of the received signals. The receiver further includes an adding section for adding the relative phase difference produced from the storage section being addressed by the amplitude ratio and the phase difference produced from the memory access section to the one of the phases of the received signals to produce the phase of the vector-combined signal combined based on the received signals.

    Abstract translation: 分别在两个分支中接收信号的分集接收机包括用于以符号单位产生接收信号的相应振幅和相位的两个解调部分。 接收机包括用于产生接收信号的幅度的振幅比和接收信号的相位之间的相位差的存储器访问部分。 接收机还包括存储部分，用于存储基于接收信号组合的矢量组合信号的相位与由振幅比和相位给出的地址的接收信号的相位之一中的至少一个相对相位差 接收信号的差异。 基于幅度比，相位差和接收信号的相位之一，先前计算矢量组合信号的相位。 该接收机还包括一个加法部分，用于将由寻址的存储部分产生的相对相位差与由存储器访问部分产生的相位差相加到接收信号的相位之一，以产生相位 基于接收信号组合的矢量组合信号。

    Multisite digital radio communication system with signal diversity
    86.
    发明授权
    Multisite digital radio communication system with signal diversity 失效
    具有信号多样性的多站点数字无线电通信系统

    公开(公告)号：US5644599A

    公开(公告)日：1997-07-01

    申请号：US345059

    申请日：1994-11-25

    Applicant: Garry Carson Hess

    Inventor： Garry Carson Hess

    IPC: H04B7/08 ,  H04B7/02

    CPC classification number: H04B7/0865 ,  H04B7/0848

    Abstract: A radio communications system (100) has multiple receive sites (210, 250) for providing signal diversity for a common source signal. At a receive site (210), data is received on a wireless communication channel (208), and associated signal quality determined for the data received. Coefficients of a time domain function defining the signal quality are determined and transferred, along with the data, to a central site (110). At the central site (110), the data transferred from multiple receive sites (210, 250) is weighted according to the corresponding time domain functions to recover the source signal.

    Abstract translation: 无线电通信系统（100）具有用于为公共源信号提供信号分集的多个接收站点（210,250）。 在接收站点（210）处，在无线通信信道（208）上接收数据，并且为接收到的数据确定相关联的信号质量。 定义信号质量的时域函数的系数与数据一起确定并传送到中心站点（110）。 在中心站点（110），从多个接收站点（210,250）传送的数据根据​​对应的时域功能进行加权，以恢复源信号。

    Soft decision circuit
    87.
    发明授权
    Soft decision circuit 失效
    软判决电路

    公开(公告)号：US5579343A

    公开(公告)日：1996-11-26

    申请号：US418420

    申请日：1995-04-07

    Applicant: Hideo Ohmura

    Inventor： Hideo Ohmura

    IPC: H04B7/08 ,  H04L25/06 ,  H04L27/22 ,  H04L27/06 ,  H04L1/02

    CPC classification number: H04L25/067 ,  H04B7/0865 ,  H04L27/22

    Abstract: An object of the present invention is to provide a soft decision circuit by which the reception accuracy can be improved. Each of first and second receivers of the soft decision circuit includes a phase amount detector for detecting a phase amount of a receive signal, an I table and a Q table for converting the phase amount into orthogonal I/Q signals, an A/D converter for converting a receive level signal of the receive signal into a digital value, a log linear table for converting an output of the A/D converter into a squared value of a true value, and first and second multipliers for multiplying outputs of the I table and the Q table with the output of the log linear table to weight the outputs of the I table and the Q table. The soft decision circuit further comprises first and second adders for adding outputs of the first and second multipliers of the receivers of the 0-system and the 1-system, respectively, and a digital signal processing circuit for performing determination using outputs of the adders as soft decision information.

    Abstract translation: 本发明的目的是提供一种可以提高接收精度的软判决电路。 软判决电路的第一和第二接收机中的每一个包括用于检测接收信号的相位量的相位量检测器，用于将相位量转换为正交I / Q信号的I表和Q表，A / D转换器 用于将接收信号的接收电平信号转换为数字值，将A / D转换器的输出转换为真值的平方值的对数线性表，以及用于将I表的输出相乘的第一和第二乘法器 和带有输出日志线性表的Q表，以加权I表和Q表的输出。 软判决电路还包括第一和第二加法器，用于分别添加O系统和1-系统的接收机的第一和第二乘法器的输出;以及数字信号处理电路，用于使用加法器的输出来执行确定 软决策信息。

    Maximal ratio diversity combining technique
    88.
    发明授权
    Maximal ratio diversity combining technique 失效
    最大比例分集组合技术

    公开(公告)号：US5140615A

    公开(公告)日：1992-08-18

    申请号：US663777

    申请日：1991-03-04

    Applicant: Steven C. Jasper ,  Mark A. Birchler

    Inventor： Steven C. Jasper ,  Mark A. Birchler

    IPC: H04B7/08 ,  H04L1/04 ,  H04L1/06 ,  H04L27/38

    CPC classification number: H04L25/0232 ,  H04B7/0865 ,  H04L1/04 ,  H04L1/06 ,  H04L27/38

    Abstract: A method for implementing diversity reception to counteract effects of channel fading on a transmitted information signal. In diversity receive paths, estimates of complex channel gain are computed based upon pilot symbols inserted from time to time in the transmitted information symbol stream. Phase corrected and weighted samples from the diversity paths are summed prior to the decision process. The squared magnitudes of the diversity path channel gains are summed to provide the proper threshold adjustment.

    Abstract translation: 一种用于实现分集接收以抵消信道衰落对所发送的信息信号的影响的方法。 在分集接收路径中，基于在发送的信息符号流中不时插入的导频符号来计算复信道增益的估计。 来自分集路径的相位校正和加权样本在决策过程之前相加。 将分集路径信道增益的平方幅度相加以提供适当的阈值调整。

    Field component diversity antenna and receiver arrangement
    89.
    发明授权
    Field component diversity antenna and receiver arrangement 失效
    现场分量分集天线和接收机布置

    公开(公告)号：US4611212A

    公开(公告)日：1986-09-09

    申请号：US605969

    申请日：1984-05-01

    Applicant: William C. Lee

    Inventor： William C. Lee

    IPC: H01Q21/24 ,  H04B7/08 ,  G01S3/02 ,  H01Q21/00 ,  H04B1/06

    CPC classification number: H01Q21/24 ,  H04B7/0865

    Abstract: The field component diversity antenna and receiver arrangement comprises at least a first pair of parallel spaced, straight, vertical elemental antenna elements disposed substantially parallel to the electric field component of a transmitted signal to receive the transmitted signal in a multipath fading environment where the electric field and magnetic field components are uncorrelated and a 180.degree. hybrid circuit coupled to the first pair of spaced antenna elements to provide a first output signal proportional to the electric field components and a second output signal proportional to the magnetic field component. The spaced elemental antenna elements may be monopole elements or dipole elements. The pair of antenna element may be connected together by a straight conductor to enhance the magnetic field component. The first and second output signals may be combined by known diversity combining arrangement to achieve a diversity advantage.

    Abstract translation: 场分量分集天线和接收器装置包括至少第一对平行间隔的，直的垂直元件天线元件，其基本上平行于发射信号的电场分量设置，以在多径衰落环境中接收发射信号，其中电场 并且磁场分量是不相关的，并且180°混合电路耦合到第一对隔开的天线元件，以提供与电场分量成比例的第一输出信号和与磁场分量成比例的第二输出信号。 间隔的元件天线元件可以是单极元件或偶极子元件。 一对天线元件可以通过直导体连接在一起，以增强磁场分量。 第一和第二输出信号可以通过已知的分集组合装置组合以实现分集优势。

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