中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

89 records (took 0.02 seconds)

    Single user detection base station
    63.
    发明申请
    Single user detection base station 有权
    单用户检测基站

    公开(公告)号：US20020154619A1

    公开(公告)日：2002-10-24

    申请号：US10080123

    申请日：2002-02-21

    Applicant: InterDigital Technology Corporation

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

    IPC: H04B007/216

    CPC classification number: H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

    Abstract: A code division multiple access base station 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 as a channel response matrix at the multiple of the chip rate. A padded version of a spread data vector of a size corresponding to the multiple chip rate using a column of the channel response matrix, the estimated channel response matrix, the samples and a fourier transform. The spread data vector is estimated by eliminating elements of the padded version so that the estimated spread data vector is of a size corresponding to the chip rate.

    Abstract translation: 码分多址基站用于在共享频谱上接收多个数据信号。 每个接收的数据信号经历类似的信道响应。 接收的数据信号的组合信号通过共享频谱接收。 组合信号以芯片速率的倍数进行采样。 信道响应被估计为码片速率倍数的信道响应矩阵。 使用信道响应矩阵的列，估计的信道响应矩阵，样本和傅里叶变换来对应于多码片速率的大小的扩展数据矢量的填充版本。 通过消除填充版本的元素来估计扩展数据向量，使得估计的扩展数据向量具有与码片速率相对应的大小。

    Single user detection user equipment
    64.
    发明申请
    Single user detection user equipment 有权
    单用户检测用户设备

    公开(公告)号：US20020136160A1

    公开(公告)日：2002-09-26

    申请号：US10080212

    申请日：2002-02-21

    Applicant: InterDigital Technology Corporation

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

    IPC: H04B007/216 ,  H04J011/00

    CPC classification number: H04B1/7105 ,  H04B1/71052 ,  H04B2201/70707 ,  H04L25/0212

    Abstract: 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 a shared spectrum. The combined signal is sampled at a multiple of the chip rate. A channel response is estimated. A first element of a spread data vector is determined using the combined signal samples and the estimated channel response. A factor from the first element determination is used to determine remaining elements of the spread data vector. Data of the data signals is estimated using the determined elements of the spread data vector.

    Abstract translation: 码分多址用户设备用于在共享频谱上接收多个数据信号。 每个接收的数据信号经历类似的信道响应。 接收到的数据信号的组合信号通过共享频谱接收。 组合信号以芯片速率的倍数进行采样。 估计频道响应。 使用组合的信号样本和估计的信道响应来确定扩展数据向量的第一元素。 使用来自第一元素确定的因子来确定扩展数据向量的剩余元素。 使用所确定的扩展数据矢量的元素来估计数据信号的数据。

    Base station utilizing a weighted open loop power control
    65.
    发明申请
    Base station utilizing a weighted open loop power control 有权
    基站利用加权开环功率控制

    公开(公告)号：US20020085504A1

    公开(公告)日：2002-07-04

    申请号：US10083240

    申请日：2002-02-26

    Applicant: InterDigital Technology Corporation

    Inventor： Ariela Zeira ,  Sung-Hyuk Shin

    IPC: H04B007/212

    CPC classification number: H04W52/10 ,  H04B2201/709709 ,  H04W52/24 ,  H04W52/242 ,  H04W52/246 ,  H04W52/248

    Abstract: A base station employing weighted open loop power control receives a communication and measures its received power level. Based on, in part, the received communication's power level and the transmission power level of the communication, a path loss estimate is determined. A quality of the path loss estimate is also determined. The transmission power level for a communication from the base station is based, in part, on weighting the path loss estimate in response to the quality of the estimate.

    Abstract translation: 采用加权开环功率控制的基站接收通信并测量其接收功率电平。 基于部分接收到的通信的功率电平和通信的发送功率电平，确定路径损耗估计。 路径损耗估计的质量也被确定。 来自基站的通信的发射功率电平部分地基于响应于估计的质量对路径损耗估计进行加权。

    Power control during a transmission pause
    68.
    发明申请
    Power control during a transmission pause 有权

    公开(公告)号：US20040214593A1

    公开(公告)日：2004-10-28

    申请号：US10848185

    申请日：2004-05-18

    Applicant: InterDigital Technology Corporation

    Inventor： Sung-Hyuk Shin ,  Ariela Zeira ,  Fatih Ozluturk ,  Donald M. Grieco

    IPC: H04Q007/20 ,  H04B007/00

    CPC classification number: H04W52/228 ,  H04W52/08 ,  H04W52/24 ,  H04W52/287 ,  H04W52/44

    Abstract: A transmitting station performs closed loop power control prior to a transmission pause. A closed loop transmission power level prior to the pause is determined. A reference signal is received and a received power level of the reference signal prior to and during the transmission pause is determined. The measured reference signal received power levels are compared to a transmit power level of the reference signals to produce a pathloss estimate of the reference signal prior to and during the transmission pause. A new transmit power level is determined by adjusting the closed loop transmission power level by a change between the prior to and during pathloss estimates. A transmission power level of the transmitting station is set to the determined new transmit power level. A communication is transmitted at the set transmission power level.

    Dynamic channel quality measurement procedure implemented by a base station for adaptive modulation and coding techniques
    69.
    发明申请
    Dynamic channel quality measurement procedure implemented by a base station for adaptive modulation and coding techniques 有权
    由基站实现的用于自适应调制和编码技术的动态信道质量测量过程

    公开(公告)号：US20040185788A1

    公开(公告)日：2004-09-23

    申请号：US10768211

    申请日：2004-01-30

    Applicant: InterDigital Technology Corporation

    Inventor： Stephen E. Terry ,  Stephen G. Dick ,  James M. Miller ,  Eldad Zeira ,  Ariela Zeira

    IPC: H04B007/00 ,  H04Q007/20

    CPC classification number: H04W72/087 ,  H04B17/24 ,  H04B17/309 ,  H04B17/382 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0027 ,  H04W72/042 ,  H04W72/085 ,  H04W72/10 ,  H04W72/1231 ,  H04W72/1278

    Abstract: A method for a base station to optimize radio resource utilization and adjust data rates in a wireless digital communications system. The base station communicates with a plurality of user equipment mobile terminals (UEs) and employs adaptive modulation and coding (AM&C) to achieve improved radio resource utilization and provide optimum data rates for user services. Blocks of downlink (DL) data are received by the base station which requests downlink DL channel quality measurements only from those mobile terminals (UEs) with pending downlink transmissions. The UEs respond to the request by measuring and reporting DL channel quality to the base station, which then allocates resources such that the UEs will make best use of radio resources. The base station notifies the UEs of the physical channel allocation indicating the modulation/coding rate and allocated slots followed by transmission of blocks of downlink data which are transmitted to the UEs.

    Abstract translation: 一种用于基站在无线数字通信系统中优化无线电资源利用并调整数据速率的方法。 基站与多个用户设备移动终端（UE）进行通信，并采用自适应调制和编码（AM＆C）来实现改进的无线电资源利用并为用户服务提供最佳数据速率。 下行链路（DL）数据块由仅从具有未决下行链路传输的那些移动终端（UE）请求下行链路DL信道质量测量的基站接收。 UE通过向基站测量和报告DL信道质量来响应该请求，该基站然后分配资源，使得UE将充分利用无线电资源。 基站向UE发送表示调制/编码率的物理信道分配，并且向UE发送下行链路数据块的发送。

    Efficient joint detection
    70.
    发明申请
    Efficient joint detection 失效
    高效联合检测

    公开(公告)号：US20040136316A1

    公开(公告)日：2004-07-15

    申请号：US10644361

    申请日：2003-08-20

    Applicant: InterDigital Technology Corporation

    Inventor： Jaeyoung Kwak ,  John W. Haim ,  Ariela Zeira ,  Jung-Lin Pan

    IPC: H04J011/00

    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个数据信号或脉冲串以码分多址通信格式通过共享频谱发送。 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个发送的数据信号。 产生多个系统矩阵和使用K个数据信号的代码和估计的脉冲响应的相关协方差矩阵。 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和近似为块循环矩阵。 每个扩展和近似的系统和协方差矩阵的对角矩阵由质数因子算法 - 快速傅里叶变换（PFA-FFT）确定，而不分割矩阵。 收到的矢量版本被扩展。 采用对角矩阵和扩展接收向量版本的乘积。 通过PFA-FFT对乘积的结果执行逆块离散傅里叶变换，以产生K个数据信号的估计数据。

Patent Agency Ranking