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38 条记录 (耗时 0.024 秒)

    Single user detection user equipment
    1.
    发明授权
    Single user detection user equipment 有权

    公开(公告)号：US07133412B2

    公开(公告)日：2006-11-07

    申请号：US10080140

    申请日：2002-02-21

    申请人： Parthapratim De ,  Ariela Zeira ,  Jung-Lin Pan ,  Raj Mani Misra

    发明人： Parthapratim De ,  Ariela Zeira ,  Jung-Lin Pan ,  Raj Mani Misra

    IPC分类号： H04B7/216

    CPC分类号： H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

    摘要： A code division multiple access user equipment is used in receiving a plurality of data signals over a shared spectrum. Each received data signal experiences a similar channel response. A combined signal of the received data signals is received over the shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A cross correlation matrix is determined using the estimated channel response. A subblock of the cross correlation matrix is selected. A Cholesky factor for the subblock is determined. The Cholesky factor is extended. The spread data vector is determined using the extended Cholesky factor, a version of the channel response and the samples. Data of the data signals is estimated using the spread data vector.

    Dynamic link adaption for time division duplex (TDD)
    5.
    发明授权
    Dynamic link adaption for time division duplex (TDD) 失效

    公开(公告)号：US06985457B2

    公开(公告)日：2006-01-10

    申请号：US10152104

    申请日：2002-05-21

    申请人： Eldad Zeira ,  Stephen E. Terry ,  Ariela Zeira

    发明人： Eldad Zeira ,  Stephen E. Terry ,  Ariela Zeira

    IPC分类号： H04B7/185

    CPC分类号： H04W52/367 ,  H04W52/58 ,  H04W72/08

    摘要： A UE system implements dynamic link adaptation by adding or changing control information to notify a receiver which timeslots and codes are currently active and which timeslots should be avoided. The UE provides synchronization such that the receiver knows which timeslots and codes the UE has used to map the coded composite transport channel onto physical channels. The UE attempts to avoid the timeslots which are experiencing transmission difficulties, while attempting to utilize the timeslots which are not experiencing transmission problems.

    Base station synchronization
    6.
    发明授权
    Base station synchronization 有权
    基站同步

    公开(公告)号：US06980615B2

    公开(公告)日：2005-12-27

    申请号：US10075698

    申请日：2002-02-14

    申请人： Stephen G. Dick ,  Eldad Zeira

    发明人： Stephen G. Dick ,  Eldad Zeira

    IPC分类号： H04B1/707 ,  H04B7/26 ,  H04W56/00 ,  H04L7/00

    CPC分类号： H04W56/002 ,  H04B1/7073 ,  H04B7/2668 ,  H04B7/2687 ,  H04B7/269 ,  H04B7/2693 ,  H04B7/2696 ,  H04B2201/70702 ,  H04J3/0641 ,  H04W56/0065 ,  H04W56/0075

    摘要： The present invention is a method for adjusting a timing of at least one first base station to maintain synchronization with a neighboring base station. An estimation of a timing accuracy associated with each said at least one first base station with respect to said neighboring base station is determined. For each of the first base station having its timing accuracy over a threshold, a first message to transmit a communication burst is received by the first base station. The communication burst is then received by the neighboring base station and a measurement of an estimated time difference between the first base station and the neighboring base stations in response to a second message is made. The first base station's timing is then adjusted in response to the measurement.

    摘要翻译： 本发明是一种用于调整至少一个第一基站的定时以维持与相邻基站的同步的方法。 确定与每个所述至少一个第一基站相对于所述相邻基站相关联的定时精度的估计。 对于具有超过阈值的定时精度的第一基站中的每一个，由第一基站接收到发送通信脉冲串的第一消息。 然后由相邻基站接收通信脉冲串，并响应于第二消息进行第一基站和相邻基站之间的估计时间差的测量。 然后根据测量结果调整第一个基站的时间。

    Code division multiple access modem interface
    7.
    发明授权
    Code division multiple access modem interface 失效
    码分多址调制解调器接口

    公开(公告)号：US06973523B1

    公开(公告)日：2005-12-06

    申请号：US09699145

    申请日：2000-10-27

    申请人： John D. Kaewell, Jr. ,  Stratis Gavnoudias

    发明人： John D. Kaewell, Jr. ,  Stratis Gavnoudias

    IPC分类号： H04B1/707 ,  H04B7/26 ,  H04L29/08 ,  G06F13/14 ,  G06F13/00 ,  H04J3/00 ,  H01L12/50

    CPC分类号： H04L69/324 ,  H04B1/707 ,  H04B7/2628 ,  H04B2201/709709 ,  H04W92/10

    摘要： A modem interface transfers data between a high data rate interface and a wireless interface. The modem interface has a plurality of parallel data highways. Each data highway has frames with time slots for transferring data. The plurality of highways outputs data to the high data rate interface and the wireless interface in selected time slots. At least one of the data highways has an input configured to receive data from the high data rate interface in selected time slots. At least one of the data highways has an input configured to receive data from the wireless interface in selected time slots. A processor controls the transfer of data between the plurality of highways.

    摘要翻译： 调制解调器接口在高数据速率接口和无线接口之间传输数据。 调制解调器接口具有多个并行数据高速公路。 每个数据高速公路都具有用于传送数据的时隙的帧。 多个高速公路在选定的时隙中向高数据速率接口和无线接口输出数据。 数据高速公路中的至少一个具有被配置为在所选择的时隙中从高数据速率接口接收数据的输入。 至少一个数据高速公路具有被配置为在所选择的时隙中从无线接口接收数据的输入。 处理器控制多个高速公路之间的数据传送。

    CDMA communications and geolocation system and method
    9.
    发明授权
    CDMA communications and geolocation system and method 失效
    CDMA通信和地理定位系统及方法

    公开(公告)号：US5663956A

    公开(公告)日：1997-09-02

    申请号：US628012

    申请日：1996-04-04

    申请人： Donald L. Schilling

    发明人： Donald L. Schilling

    IPC分类号： G01S5/00 ,  G01S5/14 ,  G01S13/82 ,  G01S19/11 ,  H04B1/707 ,  H04B1/71 ,  H04B7/005 ,  H04B7/185 ,  H04B7/216 ,  H04B7/26 ,  H04J13/00 ,  H04W4/12 ,  H04W4/18 ,  H04W52/34 ,  H04W64/00 ,  H04W88/02 ,  H04W88/08 ,  H04J13/02

    CPC分类号： H04W52/343 ,  G01S13/82 ,  G01S5/0036 ,  G01S5/14 ,  H04B1/707 ,  H04B1/71 ,  H04B1/7102 ,  H04B7/216 ,  H04B7/2631 ,  H04J13/00 ,  H04W52/346 ,  H04B2201/70701 ,  H04B2201/709709 ,  H04B7/18547 ,  H04B7/2628 ,  H04W4/12 ,  H04W4/18 ,  H04W64/00 ,  H04W64/006 ,  H04W88/02 ,  H04W88/08

    摘要： A spread-spectrum CDMA communications system for locating remote units, and for communicating message data between a plurality of remote units and a base station. The spread-spectrum CDMA communications system includes a plurality of base stations and a plurality of remote units. A base station has a spread-spectrum modulator for spread-spectrum processing the message data, and a transmitter for transmitting the spread-spectrum processed-message data, combined with a generic-chip-code signal, from the base station to a remote unit. The base station also has an antenna, and spread-spectrum detectors for recovering message-data communicated from the remote-units. A remote-unit has an antenna, and a detector coupled to the antenna for recovering data communicated from the base station. The detector includes a spread spectrum demodulator. Also, the remote unit has a device for converting the format of the data into a form suitable for communicating over radio waves, a spread spectrum modulator and a transmitter. The base station has a range circuit, which comparers the generic-chip-code signal generated at the base station with the generic-chip-code signal received from the remote unit, for determining a range between the remote unit and the base station.

    摘要翻译： 一种用于定位远程单元并用于在多个远程单元和基站之间传送消息数据的扩频CDMA通信系统。 扩频CDMA通信系统包括多个基站和多个远程单元。 基站具有用于对消息数据进行扩频处理的扩频调制器，以及用于从基站向远程单元发送与通用芯片码信号组合的扩频处理消息数据的发射机 。 基站还具有用于恢复从远程单元传送的消息数据的天线和扩频检测器。 远程单元具有天线和耦合到天线的检测器，用于恢复从基站传送的数据。 检测器包括扩频解调器。 而且，远程单元还具有用于将数据格式转换为适合通过无线电波，扩频调制器和发射机进行通信的形式的装置。 基站具有范围电路，其将在基站处生成的通用芯片码信号与从远程单元接收的通用芯片码信号进行比较，以确定远程单元和基站之间的范围。