公开(公告)号：US20040248602A1

公开(公告)日：2004-12-09

申请号：US10772644

申请日：2004-02-05

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco ,  John W. Haim ,  Andrew F. Bednarz ,  Philip J. Pietraski ,  Louis J. Guccione ,  Prabhakar R. Chitrapu

IPC: H04B015/00

CPC classification number: H04B1/7083 ,  H04B1/70735 ,  H04B1/70755 ,  H04B1/709 ,  H04B2201/70701 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search is disclosed. Step 1 processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 processing is performed to obtain the toffset and code group. Step 3 processing is performed to identify the midamble of a base station with which the WTRU performing the initial cell search may synchronize with.

Abstract translation: 公开了一种用于执行初始小区搜索的方法和系统。 执行步骤1处理以检测峰值主同步码（PSC）位置（即码片偏移或码片位置）。 执行步骤2处理以获得折射和代码组。 执行步骤3处理以识别执行初始小区搜索的WTRU可与其同步的基站的中间码。

公开(公告)号：US20040196893A1

公开(公告)日：2004-10-07

申请号：US10830699

申请日：2004-04-23

Applicant: InterDigital Technology Corporation

Inventor： Hyun Seok Oh ,  Alexander Reznik ,  Donald M. Grieco

IPC: H04B001/707

CPC classification number: H04B1/7117 ,  H04B1/70754 ,  H04B1/7115

Abstract: The present invention is directed to an improved telecommunication receiver for receiving wireless multi-path communication signals. A novel RAKE receiver and a time diverse integration system for the calculation of the relative power of received signal samples are provided. Preferably, the receiver is embodied in a UE or base station of a CDMA wireless telecommunication system, such as a 3GPP system.

公开(公告)号：US20040192236A1

公开(公告)日：2004-09-30

申请号：US10686055

申请日：2003-10-14

Applicant: InterDigital Technology Corporation

Inventor： Rui Yang ,  Donald M. Grieco ,  Leonid Kazakevich

IPC: H04B017/02

CPC classification number: H03G3/3052 ,  H03G3/3036 ,  H03G3/3042 ,  H03G3/3047 ,  H04L5/1484 ,  H04M3/40

Abstract: In a time-division duplex (TDD) system, a reliable initialization scheme that is applicable to an automatic gain controller (AGC) at a base station is implemented in various forms depending on the availability of certain information such as signal-to-interference ratio (SIR), spreading factors and other parameters. A more accurate estimation of the initial control word of a gain-adjustable amplifier for one or more time slots is implemented. The scheme is applicable to AGC initialization for each time slot of the TDD system, but is also applicable to other systems of transmission, without limitation.

Abstract translation: 在时分双工（TDD）系统中，可以根据某些信息的可用性（例如信号干扰比）来以各种形式实现适用于基站处的自动增益控制器（AGC）的可靠的初始化方案 （SIR），扩散因子等参数。 实现了用于一个或多个时隙的增益可调放大器的初始控制字的更准确的估计。 该方案适用于TDD系统的每个时隙的AGC初始化，但也适用于其他传输系统，但不限于此。

公开(公告)号：US20030157892A1

公开(公告)日：2003-08-21

申请号：US10304894

申请日：2002-11-26

Applicant: InterDigital Technology Corporation

Inventor： Alexander Reznik ,  Donald M. Grieco ,  Hyun Seok Oh

IPC: H04B001/10 ,  H04B015/00 ,  H04B017/00

CPC classification number: H04B1/7117 ,  H04B1/70754 ,  H04B1/7115

Abstract: The present invention is directed to an improved telecommunication receiver for receiving wireless multi-path communication signals. A novel RAKE receiver and a time diverse integration system for the calculation of the relative power of received signal samples are provided. Preferably, the receiver is embodied in a UE or base station of a CDMA wireless telecommunication system, such as a 3GPP system.

公开(公告)号：US20020146039A1

公开(公告)日：2002-10-10

申请号：US09918611

申请日：2001-07-31

Applicant: InterDigital Technology Corporation

Inventor： Alpaslan Demir ,  Donald M. Grieco

IPC: H04K001/00 ,  H04J003/06

CPC classification number: H04W56/00 ,  H04B1/7083 ,  H04J3/0608 ,  H04J11/0069 ,  H04W48/16

Abstract: A system and method for establishing initial synchronization for the link between a UE and a base station in a communication network uses window exclusion logic in order to avoid a deadlock condition upon a detection of the wrong public land mobile network (PLMN). The communication signal is processed in a three step decision process. The first decision step determines a chip offset of the strongest path detected over a frame of samples. In response to the first decision, the second step generates a scrambling code group number and slot offset for retrieving the secondary synchronization code. The third decision step retrieves a primary scrambling code in response to the code group number for synchronizing the UE to the base station.

Abstract translation: 为了在通信网络中的UE和基站之间的链路建立初始同步的系统和方法使用窗口排除逻辑，以便在检测到错误的公共陆地移动网络（PLMN）时避免死锁状况。 通信信号在三步决策过程中进行处理。 第一决定步骤确定在一个采样帧上检测到的最强路径的码片偏移。 响应于第一决定，第二步骤产生用于检索辅助同步码的扰码组号和时隙偏移量。 第三判定步骤响应于用于将UE同步到基站的码组号来检索主扰码。