公开(公告)号：WO2004073321A3

公开(公告)日：2004-12-09

申请号：PCT/US2004003207

申请日：2004-02-05

Applicant: INTERDIGITAL TECH CORP ,  DEMIR ALPASLAN ,  GRIECO DONALD M ,  HAIM JOHN W ,  BEDNARZ ANDREW F ,  PIETRASKI PHILIP J ,  GUCCIONE LOUIS J ,  CHITRAPU PRABHAKAR R

Inventor： DEMIR ALPASLAN ,  GRIECO DONALD M ,  HAIM JOHN W ,  BEDNARZ ANDREW F ,  PIETRASKI PHILIP J ,  GUCCIONE LOUIS J ,  CHITRAPU PRABHAKAR R

IPC: H04B1/707 ,  H04B7/26 ,  H04J3/06 ,  H04L7/02 ,  H04L7/10 ,  H04W48/16 ,  H04W56/00

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 (208) processing is preformed to detect a peak primary synchronization code (PSC) location (i.e. chip offset or chip location). Step 2 (210) processing is performed to obtain the toffset and code group. Step 3 (212) 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（208）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（210）处理以获得折射和代码组。 执行步骤3（212）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置码。

公开(公告)号：WO2004019159A3

公开(公告)日：2004-07-08

申请号：PCT/US0325555

申请日：2003-08-15

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  HAIM JOHN W ,  ZEIRA ARIELA ,  PAN JUNG-LIN

IPC: H04B1/707 ,  H04J11/00 ,  G06F15/00

CPC classification number: H04B1/71052 ,  H04B2201/70707

Abstract: K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

Abstract translation: K个数据信号或突发以码分多址通信格式在共享频谱上传输。 组合信号在共享频谱上被接收和采样，作为多个接收的矢量版本。 组合信号包括K个传输的数据信号。 产生使用K个数据信号的代码和估计脉冲响应的多个系统矩阵和相关联的协方差矩阵。 每个系统矩阵对应于接收到的矢量版本。 系统和协方差矩阵被扩展并近似为块循环矩阵。 每个扩展和近似系统以及协方差矩阵的对角矩阵由质量因子算法 - 快速傅里叶变换（PFA-FFT）确定，不需要对矩阵进行分割。 接收到的矢量版本被扩展。 采用对角矩阵和扩展接收矢量版本的乘积。 通过PFA-FFT对产物的结果执行逆块离散傅立叶变换以产生K个数据信号的估计数据。

公开(公告)号：WO0209311A3

公开(公告)日：2002-05-30

申请号：PCT/US0121979

申请日：2001-07-12

Applicant: INTERDIGITAL TECH CORP

Inventor： HAIM JOHN W

IPC: H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/24 ,  H04W52/26

CPC classification number: H04W52/146 ,  H04W52/08 ,  H04W52/10 ,  H04W52/12 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/265 ,  H04W52/267 ,  H04W52/362

Abstract: A system and a method of controlling transmitter power in a wireless communication system in which user data is processed as a multirate signal having a rate N(t) and in which the user data signal having rate N(t) for transmission. The transmission power is adjusted on a relatively slow basis based on quality of data received by a receiver of the transmitted data. The transmitter power is determined as a function of N(t)/M(t) such that a change in the data rate in the multiple channels or the rate of the transmission data signal is compensated in advance of a quality of data based adjustment associated with such data rate change. Preferably, the user data signal having rate N(t) is converted into the transmission data signal having the faster rate M(t) by repeating selected data bits whereby the energy per bit to noise spectrum density ratio is increased in the transmission data signal.

Abstract translation: 一种在无线通信系统中控制发射机功率的系统和方法，其中用户数据被处理为具有速率N（t）的多速率信号并且其中具有速率N（t）的用户数据信号用于传输。 基于发送数据的接收器所接收的数据的质量，在相对较慢的基础上调整发送功率。 发射机功率被确定为N（t）/ M（t）的函数，使得多个信道中的数据速率的变化或传输数据信号的速率在关联的基于数据的调整的质量之前被补偿 随着这种数据速率的变化。 优选地，通过重复选择的数据位，具有速率N（t）的用户数据信号被转换成具有较快速率M（t）的发送数据信号，由此在发送数据信号中每比特的能量与噪声谱密度比增加。

公开(公告)号：EP1504547A4

公开(公告)日：2011-03-30

申请号：EP03721722

申请日：2003-04-17

Applicant: INTERDIGITAL TECH CORP

Inventor： HAIM JOHN W

IPC: H04B7/216 ,  H04B1/707 ,  H04B7/26 ,  H04J11/00 ,  H04J13/00

CPC classification number: H04B7/2618 ,  H04B1/70735 ,  H04B7/2628 ,  H04B2201/70705 ,  H04J13/14

公开(公告)号：EP1604472A4

公开(公告)日：2007-01-31

申请号：EP04720334

申请日：2004-03-12

Applicant: INTERDIGITAL TECH CORP

Inventor： HAIM JOHN W ,  TYRA FRYDERYK ,  GUCCIONE LOUIS J ,  AXNESS TIMOTHY A ,  GRIECO DONALD M

IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B7/005 ,  H04J3/00

CPC classification number: H04W52/52 ,  H03G3/001 ,  H03G3/3052 ,  H03G3/3078

Abstract: An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit (13) in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function (14) is activated for a given data sample block when the number of saturated data samples that are detected within the block (17) exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing.

公开(公告)号：EP1590974A4

公开(公告)日：2006-09-13

申请号：EP04704959

申请日：2004-01-23

Applicant: INTERDIGITAL TECH CORP

Inventor： DEMIR ALPASLAN ,  GRIECO DONALD M ,  HAIM JOHN W ,  BEDNARZ ANDREW F

IPC: H04L12/56 ,  H04W48/02 ,  H04W48/10 ,  H04W48/16 ,  H04W56/00 ,  H04Q7/20

CPC classification number: H04W48/10 ,  H04W48/02 ,  H04W48/16 ,  H04W56/00

Abstract: A method and system for performing initial cell search in wireless communication system wherein unsuitable cells are excluded is disclosed. Stored frequencies are searched exhaustively and initial frequencies are search non-exhaustively. Initial frequencies may be searched exhaustively in certain circumstances. When performing exhaustive initial cell searches, primary synchronization codes that lead to unsuitable cells are excluded from subsequent initial cell searches performed on the same frequency.

公开(公告)号：EP1800412A4

公开(公告)日：2010-09-29

申请号：EP05789136

申请日：2005-08-22

Applicant: INTERDIGITAL TECH CORP

Inventor： AYCIN ERICA ELLYN ,  KLAHN GERARD ,  HAQUE TANBIR ,  TYRA FRYDERYK ,  HAIM JOHN W

IPC: H04B1/26 ,  H04B1/10

CPC classification number: H04B1/1036 ,  H04B1/0003 ,  H04B17/336 ,  H04B17/382

公开(公告)号：EP1702421A4

公开(公告)日：2008-02-27

申请号：EP04815069

申请日：2004-12-22

Applicant: INTERDIGITAL TECH CORP

Inventor： BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

IPC: H04B1/16 ,  G08C17/00 ,  H04B1/00 ,  H04B1/38 ,  H04B7/005 ,  H04B7/01 ,  H04B7/015 ,  H04W52/28

CPC classification number: H04W52/288 ,  H04W52/0216 ,  H04W52/0248 ,  H04W52/0293 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/24

Abstract: A wireless transmit/receive unit (WTRU) uses an oscillator providing accuracy for synchronized communications parameters in an active mode, and operates at reduced power during a discontinuous reception (DRX) mode. A real time clock (RTC) is used as the frequency standard during the reduced power operation, and a frequency adjustment is effected while the RTC is used as the frequency standard. By effecting the frequency adjustment, the RTC is able to be used as the frequency standard for substantial time periods, thereby reducing power consumption of the WTRU during the DRX mode.

公开(公告)号：EP1552405A4

公开(公告)日：2006-03-22

申请号：EP03793067

申请日：2003-08-15

Applicant: INTERDIGITAL TECH CORP

Inventor： KWAK JAEYOUNG ,  HAIM JOHN W ,  ZEIRA ARIELA ,  PAN JUNG-LIN

IPC: H04B1/707 ,  H04J11/00 ,  G06F15/00

CPC classification number: H04B1/71052 ,  H04B2201/70707

Abstract: K data signals, or bursts, are transmitted over a shared spectrum in a code division multiple access communication format. A combined signal is received and sampled over the shared spectrum, as a plurality of received vector versions. The combined signal includes the K transmitted data signals. A plurality of system matrices and an associated covariance matrix using codes and estimated impulse responses of the K data signals is produced. Each system matrix corresponds to a received vector version. The system and covariance matrices are extended and approximated as block circulant matrices. A diagonal matrix of each of the extended and approximated system and covariance matrices are determined by prime factor algorithm - fast Fourier transform (PFA-FFT) without division of the matrix. The received vector versions are extended. A product of the diagonal matrices and the extended received vector versions is taken. An inverse block discrete Fourier transform is performed by a PFA-FFT on a result of the product to produce the estimated data of the K data signals.

公开(公告)号：EP1527530A4

公开(公告)日：2005-09-28

申请号：EP03772036

申请日：2003-07-29

Applicant: INTERDIGITAL TECH CORP

Inventor： DIFAZIO ROBERT A ,  HAIM JOHN W

IPC: H04B7/005 ,  H04B7/26 ,  H04L12/56

CPC classification number: H04B7/264 ,  H04B7/2618 ,  H04L1/0039 ,  H04L1/1671 ,  H04W52/44

Abstract: A method for performing transport format combination indicator processing in a wireless communications system begins by collecting received samples for a timeslot (322). Processing of the received samples for the timeslot that does not require a transport format combination code list or TFC code list valid indicator is performed (342). Next, a TFCI value for the timeslot is received and is processed at the timeslot rate, producing the TFC code list and the TFC code list valid indicator (344). Then processing in the timeslot that requires the TFC code list or the TFC code list indicator is performed.

Abstract translation: 用于在无线通信系统中执行传输格式组合指示符处理的方法开始于收集时隙（322）的接收样本。 处理不需要传输格式组合代码列表或TFC代码列表有效指示符的时隙的接收样本被执行（342）。 接下来，接收时隙的TFCI值并以时隙速率处理，产生TFC码列表和TFC码列表有效指示符（344）。 然后在需要TFC代码列表或TFC代码列表指示符的时隙中执行处理。