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    Dual image-reject mixer receiver for multiple channel reception and processing
    1.
    发明授权
    Dual image-reject mixer receiver for multiple channel reception and processing 失效
    双图像拒绝混频器接收机，用于多频道接收和处理

    公开(公告)号：US06397051B1

    公开(公告)日：2002-05-28

    申请号：US09217924

    申请日：1998-12-21

    申请人： Salman Yousef Abbasi ,  Farhad Barzegar ,  Jeremiah Okoro

    发明人： Salman Yousef Abbasi ,  Farhad Barzegar ,  Jeremiah Okoro

    IPC分类号： H04B110

    CPC分类号： H03D7/18 ,  H04B1/109 ,  H04B1/28

    摘要： A system and method in which a dual image-reject mixer arrangement receives an RF signal having at least one channel. The dual image-reject mixer arrangement generates first and second signals corresponding to each channel of the RF signal. Each first and second signal includes a desired signal, an image frequency signal and an intermodulation signal. A feed-forward arrangement receives the first and second signals corresponding to each channel and outputs a third signal that is formed by constructively combining the desired signals corresponding to each channel and substantially cancelling the intermodulation signals corresponding to each channel. An in-phase and quadrature hybrid network receives the third signal and outputs an in-phase baseband signal and a quadrature baseband signal corresponding to each channel of the RF signal. A controller is coupled to the dual image-reject mixer arrangement and monitors the first and second signals, and controls an amplitude and a phase of the image frequency signals so that the image frequency signals are collectively minimized based on the monitored first and second signals. The controller is also coupled to the feed-forward arrangement and monitors the third signal. Based on the monitored third signals, the controller controls the amplitude and the phase of the intermodulation signals so that the intermodulation signals are collectively optimally cancelled.

    摘要翻译： 一种双图像拒绝混频器装置接收具有至少一个声道的RF信号的系统和方法。 双图像拒绝混频器装置产生对应于RF信号的每个信道的第一和第二信号。 每个第一和第二信号包括期望信号，图像频率信号和互调信号。 前馈装置接收对应于每个信道的第一和第二信号，并且输出通过构建性组合对应于每个信道的期望信号并且基本上消除对应于每个信道的互调信号而形成的第三信号。 同相和正交混合网络接收第三信号并输出​​与RF信号的每个信道相对应的同相基带信号和正交基带信号。 控制器耦合到双图像拒绝混频器装置并监视第一和第二信号，并且控制图像频率信号的幅度和相位，使得基于所监视的第一和第二信号，将图像频率信号集中地最小化。 控制器还耦合到前馈装置并监视第三信号。 基于所监测的第三信号，控制器控制互调信号的幅度和相位，使得互调信号被共同地最佳地消除。

    GPS downloadable interface locator
    4.
    发明授权
    GPS downloadable interface locator 失效
    GPS可下载的界面定位器

    公开(公告)号：US5706014A

    公开(公告)日：1998-01-06

    申请号：US666710

    申请日：1996-06-18

    申请人： Salman Yousef Abbasi

    发明人： Salman Yousef Abbasi

    IPC分类号： G01S5/00 ,  G01S19/14 ,  H04B7/26 ,  H04W16/18 ,  H04W64/00 ,  G01S5/02 ,  H04B7/185

    CPC分类号： H04W64/00 ,  G01S19/14 ,  G01S5/0027 ,  H04W16/18

    摘要： In a wireless communication network a method for locating and tracking status of a plurality of radio ports comprises the steps of: determining a coordinate position of one of the plurality of radio ports; and transmitting the coordinate position to a control center. The method can further comprise the step of removably-interfacing a GPS receiver to one of the plurality of radio ports. Transmitting the coordinate position to the control center can utilize a wired connection. Additionally, the coordinate position can be stored at the control center. The coordinate position is integrated into a map of the plurality of radio ports. A nonresponsive radio port can be identified by a corresponding coordinate position and the wireless network traffic can be routed appropriately.

    摘要翻译： 在无线通信网络中，用于定位和跟踪多个无线端口状态的方法包括以下步骤：确定所述多个无线端口之一的坐标位置; 并将坐标位置发送到控制中心。 该方法还可以包括将GPS接收机可移除地接口到多个无线端口之一的步骤。 将坐标位置发送到控制中心可以使用有线连接。 此外，坐标位置可以存储在控制中心。 坐标位置被集成到多个无线端口的映射中。 无响应的无线端口可以由对应的坐标位置识别，并且可以适当地路由无线网络业务。

    Methods and systems for improving data transmission rates having adaptive protocols
    7.
    发明授权
    Methods and systems for improving data transmission rates having adaptive protocols 有权
    提高数据传输速率的方法和系统具有自适应协议

    公开(公告)号：US06925502B1

    公开(公告)日：2005-08-02

    申请号：US09597130

    申请日：2000-06-20

    申请人： Salman Yousef Abbasi ,  Vijay K. Bhagavath ,  Jackson Odondi ,  Zafer Sahinoglu

    发明人： Salman Yousef Abbasi ,  Vijay K. Bhagavath ,  Jackson Odondi ,  Zafer Sahinoglu

    IPC分类号： G06F13/00 ,  H04L12/56 ,  H04L29/06

    CPC分类号： H04L47/27 ,  H04L47/10 ,  H04L47/193 ,  H04L69/16 ,  H04L69/161 ,  H04L69/163 ,  H04L69/168

    摘要： Methods and systems are provided to improve the data transmission rate of a system executing an network protocol such as TCP, by adapting the protocol according to an error rate of the system. The technique includes first establishing a connection between a receiver and transmitter according to the network protocol including establishing a data window size, the window size being an indicator of the amount of data the receiver can receive. As data segments are received, the receiver counts the number of data segments received as well the number of errored octets produced by the physical layer of the network over specified time periods. For each time period, the receiver determines whether the window size of the receiver should be changed to improve the data communication rate based on the previous window size, the number of segments received and the number of errors measured. If the window size is changed, then the receiver reestablishes communication with the transmitter using the new window size, thus altering the network protocol to optimize the overall data transmission rate.

    摘要翻译： 提供方法和系统，通过根据系统的错误率调整协议来提高执行网络协议（如TCP）的系统的数据传输速率。 该技术包括首先根据网络协议建立接收机和发射机之间的连接，包括建立数据窗口大小，窗口大小是接收机可以接收的数据量的指标。 当接收到数据段时，接收机对接收到的数据段的数量以及在特定时间段内由网络的物理层产生的错误八位位组的数量进行计数。 对于每个时间段，接收机确定是否应改变接收机的窗口大小以根据先前的窗口大小，接收到的段数和测量的错误数来改善数据通信速率。 如果窗口大小改变，则接收机使用新的窗口尺寸重新建立与发射机的通信，从而改变网络协议以优化总体数据传输速率。