公开(公告)号：US20040022230A1

公开(公告)日：2004-02-05

申请号：US10435796

申请日：2003-05-12

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Sung-Hyuk Shin ,  Stephen G. Dick

IPC: H04B007/212

CPC classification number: H04W52/225 ,  H04W52/12 ,  H04W52/24

Abstract: Outer loop/weighted open loop power control apparatus controls transmission power levels in a spread spectrum time division duplex communication user equipment (UE). The user equipment receives a communication including an transmitted power level and measures its received power level. Based in part on the measured power level and the transmitted power level, 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 user equipment is based on in part weighting the path loss estimate in response to the estimate's quality.

Abstract translation: 外环/加权开环功率控制装置控制扩频时分双工通信用户设备（UE）中的发射功率电平。 用户设备接收包括发射功率电平的通信并测量其接收功率电平。 部分地基于测量的功率电平和发射功率电平，确定路径损耗估计。 路径损耗估计的质量也被确定。 来自用户设备的通信的发射功率电平部分地基于估计的质量部分地加权路径损耗估计。

公开(公告)号：US20030223398A1

公开(公告)日：2003-12-04

申请号：US10396992

申请日：2003-03-25

Applicant: InterDigital Technology Corporation

Inventor： John W. Haim ,  Hyun-Seok Oh ,  Younglok Kim ,  Ariela Zeira ,  Robert A. DiFazio

IPC: H04B007/216

CPC classification number: H04B1/70735 ,  H04B1/7105

Abstract: The present invention is a receiver which includes a blind code detection device for determining the identity of a plurality of channels over which information is to be transmitted when the identity of all channels is not known by the receiver. The blind code detection device generates a candidate channel list filled with the identify of selected channels out of the plurality of channels. A multi-user detection device, responsive to the blind code detection device, processes those channels in the candidate code list.

Abstract translation: 本发明是一种接收机，其包括盲码检测装置，用于当接收机不知道所有信道的身份时，确定要发送信息的多个信道的身份。 盲代码检测装置生成填充有多个信道中所选择的信道的标识的候选信道列表。 响应于盲代码检测设备的多用户检测设备处理候选代码列表中的那些信道。

公开(公告)号：US20030218998A1

公开(公告)日：2003-11-27

申请号：US10153477

申请日：2002-05-22

Applicant: InterDigital Technology Corporation

Inventor： Younglok Kim ,  Ariela Zeira

IPC: H04B007/216

CPC classification number: H04B1/7105 ,  G06F17/16

Abstract: Data is to be detected in a wireless communication system. A plurality of communication signals are received. A solution for estimating data of the received communication signals is modeled using a linear system requiring a matrix inversion. Columns or rows of an approximate Cholesky factor are determined. A difference between the determined columns or rows is determined. If the determined difference is less than a threshold, subsequent columns or rows are determined by previously determined columns or rows. The data of the received communication signals is estimated using the approximate Cholesky factor.

Abstract translation: 将在无线通信系统中检测数据。 接收多个通信信号。 用于估计接收到的通信信号的数据的解决方案是使用需要矩阵求逆的线性系统来建模的。 确定近似Cholesky因子的列或行。 确定确定的列或行之间的差异。 如果所确定的差值小于阈值，则通过先前确定的列或行来确定随后的列或行。 接收到的通信信号的数据使用近似的Cholesky因子来估计。

公开(公告)号：US20030198279A1

公开(公告)日：2003-10-23

申请号：US10459035

申请日：2003-06-11

Applicant: InterDigital Technology Corporation

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

IPC: H04B001/69

CPC classification number: H04W52/265 ,  H04B2201/709709 ,  H04W52/08 ,  H04W52/10 ,  H04W52/24 ,  H04W52/241 ,  H04W52/242 ,  H04W52/248 ,  H04W52/54 ,  H04W52/60

Abstract: A spread spectrum time division duplex user equipment uses frames having time slots for communication. The user equipment receives power commands and a first communication having a transmission power level in a first time slot. A power level of the first communication is measured as received. A pathloss estimate is determined based on in part the measured received first communication power level and the first communication transmission power level. A transmission power level for the second communication in a second time slot form the user equipment is set based on in part the pathloss estimate weighted by a quality factor adjusted by the power command. The quality factor decreases as a number of time slots between the first and second time slots increases.

Abstract translation: 扩频时分双工用户设备使用具有通信时隙的帧。 用户设备在第一时隙中接收功率命令和具有发射功率电平的第一通信。 第一通信的功率电平被测量为接收。 基于部分地测量的接收到的第一通信功率电平和第一通信发送功率电平来确定路径损耗估计。 基于由功率命令调整的质量因子加权的路径损耗估计，部分地设置用于在第二时隙中形成用户设备的第二通信的发送功率电平。 质量因子随着第一和第二时隙之间的时隙数量的增加而减小。

公开(公告)号：US20030193916A1

公开(公告)日：2003-10-16

申请号：US10446539

申请日：2003-05-28

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Sung-Hyuk Shin

IPC: H04B007/216

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

Abstract: A user equipment (UE) employs weighted open loop power control by receiving a communication and measuring its received power level. Based on, in part, the received communication's power level and the communication's transmission power level, 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 UE is based, in part, on weighting the path loss estimate in response to the estimate's quality.

公开(公告)号：US20030189979A1

公开(公告)日：2003-10-09

申请号：US10269606

申请日：2002-10-11

Applicant: InterDigital Technology Corporation

Inventor： Bin Li ,  Robert A. DiFazio ,  Ariela Zeira

IPC: H04Q001/20

CPC classification number: H04L1/20 ,  H04B17/336

Abstract: A method for estimating signal-to-noise ratio (SNR) using a method with low bias that is effective for both positive SNRs and small to negative SNRs. The method is based on an iterative solution for the maximum likelihood estimate of the amplitude from which the SNR can be computed. The method is applicable for various modulated systems, including BPSK, QPSK and MPSK.

Abstract translation: 一种使用低偏置的方法估计信噪比（SNR）的方法，该方法对正SNR和小到负SNR均有效。 该方法基于可以从其计算SNR的幅度的最大似然估计的迭代解。 该方法适用于各种调制系统，包括BPSK，QPSK和MPSK。

公开(公告)号：US20030156562A1

公开(公告)日：2003-08-21

申请号：US10212986

申请日：2002-08-05

Applicant: InterDigital Technology Corporation

Inventor： Ariela Zeira ,  Eldad Zeira

IPC: H04B007/216 ,  H04Q007/20

CPC classification number: H04W88/181 ,  H04B2201/709709 ,  H04J13/16 ,  H04W52/346 ,  H04W72/00 ,  H04W72/0466

Abstract: The invention includes various approaches to assigning codes in wireless code division multiple access communication systems. The invention estimates the cross code correlation between codes to base the code assignment. One approach assigns codes having a high cross correlation to users having a low transmission power level. Another approach assigns code groups having a high cross correlation to a same coded composite transport channel. Another approach assigns codes using a cross correlation factor of each code to minimize a system noise rise. Another approach uses transmission or reception diversity to assign bad code groups to users having a different diversity relationship. Another approach uses a diversity factor and a cross code correlation factor to assign codes.

Abstract translation: 本发明包括在无线码分多址通信系统中分配码的各种方法。 本发明估计基于代码分配的代码之间的交叉码相关性。 一种方法将具有高互相关性的代码分配给具有低发射功率电平的用户。 另一种方法将具有高互相关性的代码组分配给相同的编码复合传输信道。 另一种方法使用每个代码的互相关因子分配代码以最小化系统噪声上升。 另一种方法使用发送或接收分集向具有不同分集关系的用户分配不良代码组。 另一种方法使用分集因子和交叉码相关因子来分配代码。