公开(公告)号：WO2005062855A3

公开(公告)日：2007-06-28

申请号：PCT/US2004042951

申请日：2004-12-22

Applicant: INTERDIGITAL TECH CORP ,  BULTAN AYKUT ,  HAIM JOHN W ,  KAZAKEVICH LEONID

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 (WTRLJ) 11 uses an oscillator providing accuracy for synchronized communications parameters in an active mode (Fig. 1 , WTRLJ 11), and operates at reduced power during a discontinuous reception (DRX) mode (Fig. 1 WTRU 12). A real time clock (RTC) 28 is used as the frequency standard during the reduced power operation, and a frequency adjustment is effected while the RTC 28 is used as the frequency standard. By effecting the frequency adjustment, the RTC 28 is able to be used as the frequency standard for substantial time periods, thereby reducing power consumption of the WTRU 12 during the DRX mode.

Abstract translation: 无线发射/接收单元（WTRLJ）11使用振荡器提供在活动模式下的同步通信参数的精度（图1，WTRLJ 11），并且在不连续接收（DRX）模式期间以降低的功率工作（图1 WTRU 12）。 使用实时时钟（RTC）28作为降频操作期间的频率标准，并且在使用RTC28作为频率标准时进行频率调整。 通过进行频率调整，RTC28能够被用作相当长的时间段的频率标准，从而在DRX模式期间降低了WTRU 12的功耗。

公开(公告)号：WO2005048030A9

公开(公告)日：2006-07-13

申请号：PCT/US2004034740

申请日：2004-10-21

Applicant: INTERDIGITAL TECH CORP ,  ZHANG GUODONG

Inventor： ZHANG GUODONG

IPC: H04B1/00 ,  G06F20060101 ,  H04B7/00 ,  H04B7/005 ,  H04B7/01 ,  H04B7/185 ,  H04B7/212 ,  H04B15/00 ,  H04B17/00 ,  H04B17/02 ,  H04J3/00 ,  H04W52/02 ,  H04W52/34 ,  H04W52/50

CPC classification number: H04W52/50 ,  H04W52/343

Abstract: A method for initial downlink transmit power adjustment for non-real time services in a wireless communications network begins by estimating an initial downlink transmit power level for non-real-time services. The estimated power level is then compared with a threshold. A determination is made whether an increase in the estimated power level would affect neighboring cells. If an increase would not affect neighboring cells, then the initial downlink transmit power level is adjusted by a predetermined amount.

Abstract translation: 一种用于无线通信网络中的非实时业务的初始下行链路发射功率调整的方法是通过估计用于非实时业务的初始下行链路发射功率水平开始的。 然后将估计的功率电平与阈值进行比较。 确定估计功率电平的增加是否会影响相邻小区。 如果增加不影响相邻小区，则初始下行链路发射功率电平被调整预定量。

公开(公告)号：WO2006064310A1

公开(公告)日：2006-06-22

申请号：PCT/IB2004/052815

申请日：2004-12-15

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) ,  SAHLIN, Henrik

Inventor： SAHLIN, Henrik

IPC: H04B7/01 ,  G01S11/10

CPC classification number: G01S11/06 ,  H04B7/01

Abstract: Method of estimating Doppler spread comprising the steps of estimating a de-biased value according to the relation Formula (I), is a preliminary Doppler spread squared, based on measured parameters, and K 2 is a constant.

Abstract translation: 估计多普勒扩展的方法包括以下步骤：根据关系式（I）估计去偏置值，是基于测量参数的初步多普勒扩展平方，并且K 2 2是常数。

公开(公告)号：WO0117185A8

公开(公告)日：2004-02-19

申请号：PCT/EP0008369

申请日：2000-08-28

Applicant: ERICSSON TELEFON AB L M

Inventor： OESTBERG CHRISTER

IPC: H04B1/7087 ,  H04B1/712 ,  H04B7/01 ,  H04L25/02 ,  H04B1/707 ,  H04B7/005

CPC classification number: H04B1/712 ,  H04B1/7087 ,  H04B7/01 ,  H04L25/0202

Abstract: A channel estimate generator generates a plurality of channel estimates and a Doppler frequency estimator uses two or more channel estimates to generate a Doppler frequency estimate. The Doppler frequency estimator generates the Doppler frequency estimate by calculating the normalized distance between two consecutive channel estimates. A receiver uses the Doppler frequency estimate to either (1) adjust the receiver, (2) estimate the velocity of the receiver, (3) determine whether it is necessary to search for new paths, or (4) predict or track new paths. The receiver can use a moving average of Doppler frequency estimates or a weighted combination of Doppler frequency estimates from different paths of a received signal to calculate the Doppler frequency estimate.

Abstract translation: 信道估计发生器产生多个信道估计，并且多普勒频率估计器使用两个或多个信道估计来产生多普勒频率估计。 多普勒频率估计器通过计算两个连续信道估计之间的归一化距离来产生多普勒频率估计。 接收机使用多普勒频率估计（1）调整接收机，（2）估计接收机的速度，（3）确定是否需要搜索新的路径，或者（4）预测或跟踪新的路径。 接收机可以使用多普勒频率估计的移动平均值或来自接收信号的不同路径的多普勒频率估计的加权组合来计算多普勒频率估计。

公开(公告)号：WO02069508A3

公开(公告)日：2003-07-31

申请号：PCT/US0205284

申请日：2002-02-25

Applicant: PEGASUS BROADBAND COMMUNICATIO

Inventor： HANE JOHN ,  GOULD RICHARD G

IPC: H04H40/90 ,  H04N7/20 ,  H04Q7/20 ,  H04B7/01 ,  H04B7/15 ,  H04B15/00 ,  H04B7/05

CPC classification number: H04N7/20 ,  H04H40/90

Abstract: A terrestrial radio system for delivering to consumers data transmission services, Internet services, two-way capabilities and single-channel or multi-channel video programming, including national, regional and local television broadcast signals, as well as an apparatus and method thereof. The terrestrial radio system transmits terrestrial signals 6 at satellite-allocated frequencies while mitigating interference with satellite signals 52 to reuse satellite-allocated frequencies.

Abstract translation: 用于向消费者传送数据传输服务，互联网服务，双向能力以及包括国家，地区和地方电视广播信号在内的单通道或多频道视频节目的陆地无线电系统，以及其设备和方法。 地面无线电系统以卫星分配的频率发射地面信号6，同时减轻与卫星信号52的干扰，以重新使用卫星分配的频率。

公开(公告)号：WO03021972A8

公开(公告)日：2003-04-24

申请号：PCT/IL0200726

申请日：2002-09-03

Applicant: LENSLET LTD ,  MOLEV SHTEIMAN ARKADY

Inventor： MOLEV SHTEIMAN ARKADY

IPC: G06E20060101 ,  G06E1/04 ,  H04B1/707 ,  H04B7/005 ,  H04B7/01 ,  H04B7/015 ,  H04B15/00 ,  H04L27/06 ,  H04Q20060101 ,  H04Q

CPC classification number: H04B1/7105 ,  H04B1/7093 ,  H04B1/71057

Abstract: A method of finding a maximum likelihood solution for, comprising: providing a sample vector; iteratively match-filtering said sample vector with a coefficient matrix to find a gradient; using the gradient to search for a maximum likelihood solution; and deciding if a found solution of vector data is good enough.

Abstract translation: 一种找到最大似然解的方法，包括：提供样本向量; 迭代地用系数矩阵对所述样本向量进行匹配滤波以找到梯度; 使用梯度搜索最大似然解; 并确定矢量数据的找到解是否足够好。

公开(公告)号：WO0179877A2

公开(公告)日：2001-10-25

申请号：PCT/IB0100636

申请日：2001-04-17

Applicant: CONEXANT SYSTEMS INC

Inventor： GRONEMEYER STEVEN A

IPC: G01S1/00 ,  G01S19/24 ,  G01S19/37 ,  H04B1/707 ,  H04B7/01 ,  H04L27/00 ,  G01S1/04 ,  G01S5/14

CPC classification number: G01S19/235 ,  G01S19/254 ,  G01S19/256 ,  G01S19/29 ,  G01S19/30 ,  H04B1/707 ,  H04L2027/0034

Abstract: A signal detector employs a coherent accumulation system that coherently combines the correlation results derived from segments of samples of a received signal. The segments may have non-uniform lengths and may have been obtained over different and non-overlapping time periods. The segments are obtained during sampling windows of arbitrary length and at arbitrary times, and the results of processing the segments are successively combined in a coherent manner (separate magnitude and phase accumulation) until a threshold signal-to-noise ratio (SNR) has been achieved. Coherent integration is enabled by introducing a carrier phase offset as well as a code phase offset, so that different segments are aligned in carrier phase as well as code phase. Although not limited to this application, in one implementation example, the signal detector is used in connection with and as part of a global positioning system (GPS) receiver.

Abstract translation: 信号检测器采用相干累加系统，其相干地组合从接收信号的采样段导出的相关结果。 这些段可以具有不均匀的长度，并且可以在不同的和非重叠的时间段上获得。 在任意长度和任意时间的采样窗口期间获得段，并且以相干方式（分开的幅度和相位累积）连续地组合段的处理结果，直到阈值信噪比（SNR）已经被 实现。 通过引入载波相位偏移以及码相位偏移来实现相干积分，使得不同的段在载波相位以及码相位中对准。 尽管不限于该应用，但是在一个实施例中，信号检测器与全球定位系统（GPS）接收机相关并且作为全球定位系统（GPS）接收机的一部分使用。

公开(公告)号：WO01020831A1

公开(公告)日：2001-03-22

申请号：PCT/JP2000/006243

申请日：2000-09-13

IPC: H04J11/00 ,  H04B7/01 ,  H04L7/00 ,  H04L7/08 ,  H04L27/26

CPC classification number: H04L27/266 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/0014 ,  H04L27/261 ,  H04L27/2675 ,  H04L27/2679 ,  H04L2027/0067 ,  H04L2027/0087

Abstract: A residual phase error compensating circuit (104) performs delay detection of pilot symbols contained in an OFDM signal to compensate the residual phase error of the OFDM signal. A propagation distortion compensating circuit (105) compensates the propagation distortion of the OFDM signal by using the re-encoding signal as a known signal.

Abstract translation: 残余相位误差补偿电路（104）执行包含在OFDM信号中的导频符号的延迟检测，以补偿OFDM信号的残余相位误差。 传播失真补偿电路（105）通过使用重新编码信号作为已知信号来补偿OFDM信号的传播失真。

公开(公告)号：WO01013547A1

公开(公告)日：2001-02-22

申请号：PCT/JP2000/005398

申请日：2000-08-11

IPC: H04W4/16 ,  H04B7/01 ,  H04B7/26 ,  H04B17/00 ,  H04J13/00 ,  H04W24/00 ,  H04W52/04 ,  H04W88/08

CPC classification number: H04B7/01 ,  H04B1/707 ,  H04B17/318

Abstract: A measuring system capable of a high-accuracy reception level measurement despite a high Doppler frequency and large phase variations. An approximate straight line estimating means (2) approximates a signal amplitude in a demodulation data sequence as a straight line with a time width according to a Doppler frequency estimation value. A phase rotation amount estimating means (3) estimates a phase rotation amount based on the approximate straight line. A Doppler frequency estimating means (4) estimates a Doppler frequency based on the phase rotation amount. A data delaying means (5) delays a demodulation data sequence by a time required for approximate straight line estimate-processing. A reception signal power estimating means (6) estimates a reception signal power based on the approximate straight line. A noise power estimating means (7) estimates a noise power by recognizing the signal amplitude difference between the demodulation data sequence and the approximate straight line as noise components. An average-processing means (8) outputs a reception-level measured value for each time slot based on the estimated power values from the reception signal power estimating means (6) and the noise power estimating means (7).

Abstract translation: 即使具有高的多普勒频率和大的相位变化，能够进行高精度的接收电平测量的测量系统。 近似直线估计装置（2）将解调数据序列中的信号幅度近似为具有根据多普勒频率估计值的时间宽度的直线。 相位旋转量估计装置（3）基于近似的直线来估计相位旋转量。 多普勒频率估计装置（4）基于相位旋转量估计多普勒频率。 数据延迟装置（5）将解调数据序列延迟大致直线估计处理所需的时间。 接收信号功率估计装置（6）基于近似的直线来估计接收信号功率。 噪声功率估计装置（7）通过将解调数据序列和近似直线之间的信号幅度差识别为噪声分量来估计噪声功率。 平均处理装置（8）基于来自接收信号功率估计装置（6）和噪声功率估计装置（7）的估计功率值，输出每个时隙的接收电平测量值。

公开(公告)号：WO01013537A1

公开(公告)日：2001-02-22

申请号：PCT/US2000/021081

申请日：2000-08-02

IPC: H04B17/00 ,  H04B7/005 ,  H04B7/01 ,  H04B7/26

CPC classification number: H04B7/01 ,  H04B7/005

Abstract: A Doppler spread for a communications channel is measured by providing an estimate of the communications channel and generating an autocorrelation function for the estimate of the communications channel. One of a plurality of autocorrelation function hypotheses is selected to approximate the autocorrelation function for the estimate of the communications channel wherein each of the autocorrelation function hypotheses corresponds to a respective Doppler spread estimate hypothesis. One of the Doppler spread estimate hypotheses is selected corresponding to the selected autocorrelation function hypotheses as an estimate of the Doppler spread for the communications channel.

Abstract translation: 通过提供通信信道的估计并且生成用于通信信道的估计的自相关函数来测量通信信道的多普勒扩展。 选择多个自相关函数假设之一来近似用于估计通信信道的自相关函数，其中每个自相关函数假设对应于相应的多普勒扩展估计假设。 选择对应于所选择的自相关函数假设的多普勒扩展估计假设之一作为通信信道的多普勒扩展的估计。