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    Baseband signal demodulating apparatus and method in mobile radio communication system
    422.
    发明授权
    Baseband signal demodulating apparatus and method in mobile radio communication system 有权
    移动无线通信系统中的基带信号解调装置及方法

    公开(公告)号：US06504816B1

    公开(公告)日：2003-01-07

    申请号：US09215217

    申请日：1998-12-18

    Applicant: Sang Woo Lee ,  Jong Youn Kim

    Inventor： Sang Woo Lee ,  Jong Youn Kim

    IPC: H04L504

    CPC classification number: H04B1/7115 ,  H04B1/7117 ,  H04B2201/7071

    Abstract: A baseband signal demodulating apparatus in a mobile radio communication system capable of solving the channel increase problem due to the increase of subscribers by sharing correlators and accumulators used in a base station receiver by a time division multiplexing method. The apparatus includes a plurality of front end rake receivers for demodulating oversampled baseband signals to restore the original signal, buses for sharing demodulated signals from the front end rake receivers by the time division multiplexing method, and a despreding section for despreding the signals from the buses.

    Abstract translation: 一种移动无线电通信系统中的基带信号解调装置，其能够通过以时分多路复用方式共享基站接收机中使用的相关器和累加器来解决由于订户增加引起的信道增加问题。 该装置包括用于解调过采样基带信号以恢复原始信号的多个前端耙式接收机，用于通过时分复用方法从前端耙式接收机共享解调信号的总线，以及用于从总线中去除信号的去干部分 。

    Apparatus for controlling initial power ramp-up in a CDMA system by using short codes
    423.
    发明申请
    Apparatus for controlling initial power ramp-up in a CDMA system by using short codes 有权
    用于通过使用短码来控制CDMA系统中的初始功率提升的装置

    公开(公告)号：US20020187797A1

    公开(公告)日：2002-12-12

    申请号：US10211090

    申请日：2002-08-02

    Applicant: InterDigital Technology Corporation

    Inventor： Fatih M. Ozluturk ,  Gary R. Lomp

    IPC: H04B007/00 ,  H04Q007/00 ,  H04Q007/20

    CPC classification number: H04W52/36 ,  H04B1/707 ,  H04B1/7075 ,  H04B1/70753 ,  H04B1/70755 ,  H04B1/70758 ,  H04B1/7077 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70703 ,  H04B2201/7071 ,  H04W52/367 ,  H04W52/50 ,  H04W52/60

    Abstract: An apparatus for controlling transmission power during the establishment of a channel in a CDMA communication system utilizes the transmission of a short code from a subscriber unit to a base station during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional spreading code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The subscriber unit quickly increases transmission power while repeatedly transmitting the short code until the signal is detected by the base station. Once the base station detects the short code, it sends an indication to the subscriber unit to cease increasing transmission power. The use of short codes limits power overshoot and interference to other subscriber units and permits the base station to quickly synchronize to the spreading code used by the subscriber unit.

    Abstract translation: 用于在CDMA通信系统中建立信道期间控制发射功率的装置利用在初始功率提升期间从用户单元向基站传输短码。 短码是用于基站检测的序列，其具有比常规扩展码短得多的周期。 斜坡上升从低于基站检测所需功率电平的功率电平开始。 用户单元快速增加发射功率，同时重复发送短码直到基站检测到信号。 一旦基站检测到短码，它就向用户单元发送指示，以停止增加发射功率。 使用短码限制了其他用户单元的功率过冲和干扰，并允许基站快速同步到用户单元使用的扩展码。

    Matched filter and signal reception apparatus
    427.
    发明授权
    Matched filter and signal reception apparatus 失效
    匹配滤波器和信号接收装置

    公开(公告)号：US06389438B1

    公开(公告)日：2002-05-14

    申请号：US09256351

    申请日：1999-02-24

    Applicant: Changming Zhou

    Inventor： Changming Zhou

    IPC: G06J100

    CPC classification number: H04B1/7093 ,  H03H17/0254 ,  H04B1/708 ,  H04B2201/7071

    Abstract: A matched filter and signal reception apparatus having a low power consumption and small circuitry size. In the matched filter, an analog input signal is converted to digital data by an analog to digital (A/D) converter, digital multiplication, as a correlation calculation, is executed by a plurality of exclusive-OR circuits, and an addition of outputs of the exclusive-OR circuits is performed. In the digital multiplication, the digital data is multiplied by a spreading code of one bit. The outputs from the exclusive-OR circuits are added for each weight of bits, and the addition output results are weighted and summed together.

    Abstract translation: 具有低功耗和小电路尺寸的匹配滤波器和信号接收装置。 在匹配滤波器中，通过模数（A / D）转换器将模拟输入信号转换为数字数据，作为相关计算的数字乘法由多个异或电路执行，并且输出的相加 的异或电路。 在数字乘法中，数字数据乘以一位的扩展码。 对于每个比特的权重，加上来自异或电路的输出，并将加法输出结果加权并相加在一起。

    Methods and systems for reducing interference using co-channel interference mapping
    428.
    发明申请
    Methods and systems for reducing interference using co-channel interference mapping 审中-公开
    使用同频干扰映射减少干扰的方法和系统

    公开(公告)号：US20020044614A1

    公开(公告)日：2002-04-18

    申请号：US09832601

    申请日：2001-04-11

    Inventor： Karl James Molnar ,  Paul W. Dent

    IPC: H04L001/00

    CPC classification number: H04B1/0003 ,  H04B1/1027 ,  H04B1/123 ,  H04B1/7105 ,  H04B2201/7071 ,  H04L1/0001 ,  H04L25/03178 ,  H04L25/03305 ,  H04L25/03331

    Abstract: Methods of demodulating a received signal are disclosed in which an interference map containing information regarding a plurality of candidate co-channel interference sources is provided. The information in the interference map regarding the plurality of candidate interference sources may be used to identify any of the candidate co-channel interference sources that comprise a dominant interference source. The received signal may then be demodulated in a manner that cancels at least part of the contribution of any identified dominant interference source by using the information regarding any such interference source contained in the interference map.

    Abstract translation: 公开了解调接收信号的方法，其中提供了包含关于多个候选同信道干扰源的信息的干涉图。 关于多个候选干扰源的干涉图中的信息可以用于识别包括主要干扰源的任何候选同信道干扰源。 然后可以以通过使用关于干扰图中包含的任何这样的干扰源的信息来消除任何识别的主要干扰源的贡献的至少一部分的方式来解调所接收的信号。

    Spread spectrum communication system
    429.
    发明授权
    Spread spectrum communication system 失效
    扩频通信系统

    公开(公告)号：US06370130B1

    公开(公告)日：2002-04-09

    申请号：US09092914

    申请日：1998-06-08

    Applicant: Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Makoto Yamamoto

    Inventor： Changming Zhou ,  Guoliang Shou ,  Xuping Zhou ,  Kunihiko Suzuki ,  Makoto Yamamoto

    IPC: H04B7216

    CPC classification number: H04B1/7077 ,  H04B1/70735 ,  H04B1/708 ,  H04B7/2628 ,  H04B2201/70702 ,  H04B2201/7071

    Abstract: A receiver for spread spectrum communication system receives a traffic channel and common control channel by a plurality of matched filters at least one of which is selectively available for the traffic or the common control channel. At the initial acquisition, a plurality of matched filters are used for receiving the common control channel. At the hand-over, a plurality of matched filters are used to receive traffic channels of the current base station and the base stations in the adjacent cells.

    Abstract translation: 用于扩频通信系统的接收机通过多个匹配滤波器接收业务信道和公共控制信道，其中至少一个匹配滤波器可选择地可用于业务或公共控制信道。 在初始采集时，使用多个匹配滤波器来接收公共控制信道。 在切换时，使用多个匹配滤波器来接收当前基站和相邻小区中的基站的业务信道。

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