公开(公告)号：US20030228853A1

公开(公告)日：2003-12-11

申请号：US10330749

申请日：2002-12-27

Applicant: InterDigital Technology Corporation

Inventor： Leonid Kazakevich ,  Rui Yang

IPC: H04B017/02

CPC classification number: H03G7/06 ,  H03G3/001 ,  H03M1/1235

Abstract: An analog/digital gain control device avoid some of the requirements associated with the nature of a closed-loop AGC circuits and which meets the remaining requirements without much difficulty uses an analog to digital conversion method that increases the number of effective ADC bits by compressing the baseband input analog signal using a logarithmic circuit. After the compressed analog signal is converted into a digital signal, a digital anti-log process or look-up table (LUT) is used to expand the digital signal back to the original linear scale. The word size of the output of the anti-log process is larger than the input word size due to the nature of the anti-log function. To reduce the word size of the digital signal an open loop normalization technique can be applied.

Abstract translation: 模拟/数字增益控制装置避免了与闭环AGC电路的性质相关的一些要求，并且满足剩余要求，而没有太多困难使用模数转换方法，通过压缩有效ADC位数增加有效ADC位数 基带输入模拟信号使用对数电路。 在将压缩的模拟信号转换为数字信号之后，使用数字反对数处理或查找表（LUT）将数字信号扩展回原始的线性刻度。 由于反日志功能的性质，反日志进程输出的字大小大于输入字大小。 为了减小数字信号的字大小，可以应用开环归一化技术。

公开(公告)号：US20030108084A1

公开(公告)日：2003-06-12

申请号：US10284741

申请日：2002-10-31

Applicant: InterDigital Technology Corporation

Inventor： Nader Bolourchi ,  Leonid Kazakevich ,  Rui Yang

IPC: H04K001/00

CPC classification number: H01Q3/2611 ,  H04B7/0617 ,  H04B7/0669 ,  H04J13/0077 ,  H04W88/08

Abstract: The number of users and data capacity of wireless systems are increased by employing apparatus and method for increasing the number of spreading codes available in the system by providing a mechanism to reuse the already allocated spreading code or use the codes that may correlate to those already being used within the same sector/cell. This, in return, provides capacity improvement proportional to the number of added base station (BS) antennas for each cell. An antenna null steering technique for code allocation maintains the cross correlation properties of the codes only for the desired user and to obtain a gain in capacity improvement.

Abstract translation: 通过采用用于增加系统中可用的扩展码数目的装置和方法来提高无线系统的用户数量和数据容量，提供一种机制来重用已经分配的扩展码或使用可能与已经分配的扩展码相关的代码 在相同的扇区/单元格内使用。 这反过来提供了与每个小区的增加的基站（BS）天线的数量成比例的能力提高。 用于代码分配的天线零点转向技术仅针对期望的用户维护代码的互相关性质，并获得容量改进的增益。

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：US20040176054A1

公开(公告)日：2004-09-09

申请号：US10613463

申请日：2003-07-03

Applicant: InterDigital Technology Corporation

Inventor： Eldad Zeira ,  Mihaela Beluri ,  Robert Lind Olesen ,  Rui Yang

IPC: H04B017/02

CPC classification number: H04W52/52

Abstract: A system and method for automatic gain control for a wireless transmit and receive unit in a time-slotted communications system includes initializing an automatic gain control loop, sampling a received signal, and estimating the power of the received signal. The estimated power of the received signal is compared with a reference power level and an error signal is generated based upon the difference between the estimated power and the reference power level. The error signals generated by a plurality of received signals are accumulated in an accumulator, and the value of the accumulator is looked up in a table to locate a control word for an attenuator. The control word is then passed to the attenuator to adjust the gain.

Abstract translation: 用于时隙通信系统中的无线发射和接收单元的自动增益控制的系统和方法包括：初始化自动增益控制环路，对接收到的信号进行采样，以及估计接收信号的功率。 将接收信号的估计功率与参考功率电平进行比较，并且基于估计功率与参考功率电平之间的差产生误差信号。 由多个接收信号产生的误差信号被累加在累加器中，并且在表中查找累加器的值以定位衰减器的控制字。 然后将控制字传递给衰减器以调整增益。

公开(公告)号：US20040266358A1

公开(公告)日：2004-12-30

申请号：US10869672

申请日：2004-06-16

Applicant: InterDigital Technology Corporation

Inventor： Philip J. Pietraski ,  Gregory S. Sternberg ,  Rui Yang

IPC: H04B001/10 ,  H04B001/18

CPC classification number: H04L1/20 ,  H04B1/1027 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0028 ,  H04L1/1607

Abstract: A method for biasing signal-to-interference ratio (SIR) to generate channel quality indicator (CQI) includes measuring the packet error rate (PER) of a received signal and comparing the PER to a to the target PER to generate a correction term. The correction term is combined with the SIR estimation of a reference channel to generate a CQI. The CQI is reported to a transmitter to adjust signal configurations, such as code rate, modulation type, number of codes, power offset.

Abstract translation: 用于偏置信号干扰比（SIR）以产生信道质量指示符（CQI）的方法包括测量接收信号的分组错误率（PER），并将PER与a与目标PER进行比较以产生校正项。 校正项与参考信道的SIR估计相结合以产生CQI。 将CQI报告给发射机以调整信号配置，例如码率，调制类型，码数，功率偏移。

公开(公告)号：US20040023691A1

公开(公告)日：2004-02-05

申请号：US10331073

申请日：2002-12-27

Applicant: InterDigital Technology Corporation

Inventor： Leonid Kazakevich ,  Rui Yang ,  Alexander Reznik

IPC: H04M001/00 ,  H04B001/38

CPC classification number: H04B7/04

Abstract: A nullsmart antennanull method and system for use in cellular networks where the wireless transmit receive unit and/or the base station utilize multi-user detection (MUD). The interference to and from other users is taken into consideration to maximize the desired signal while eliminating or reducing interfering signals, thereby increasing overall system capacity.

Abstract translation: 一种在无线发射接收单元和/或基站利用多用户检测（MUD）的蜂窝网络中使用的“智能天线”方法和系统。 考虑到来自其他用户的干扰以最大化期望的信号，同时消除或减少干扰信号，从而增加整个系统容量。

公开(公告)号：US20040098652A1

公开(公告)日：2004-05-20

申请号：US10715153

申请日：2003-11-17

Applicant: InterDigital Technology Corporation

Inventor： Gregory S. Sternberg ,  Rui Yang ,  Philip J. Pietraski ,  Robert Lind Olesen

IPC: H03M013/00

CPC classification number: H04L25/067 ,  H03M13/35 ,  H04L1/0045 ,  H04L1/0071 ,  H04L1/1812 ,  H04L1/20 ,  H04L25/0222

Abstract: A system, components and methods provide FEC decoding in a wireless communication system in which signal to noise ratio estimation is used for scaling information captured by a demodulator in processing received wireless communication signals. A preferred wireless transmit receive unit (WTRU) has a channel rate estimation device configured to process the received communication signals for the particular communication channel and to produce channel change rate estimates. A signal to noise ratio (SNR) estimation device of the WTRU is configured to produce SNR estimates based on observation windows of a calculated number of samples of the received signal where the number of samples used for each observation window is calculated a function of the channel change rate estimates produce by the channel rate estimation device.

Abstract translation: 系统，组件和方法在无线通信系统中提供FEC解码，其中使用信噪比估计来缩放解调器在处理接收的无线通信信号中捕获的信息。 优选的无线发射接收单元（WTRU）具有信道速率估计装置，其被配置为处理用于特定通信信道的所接收的通信信号并产生信道变化率估计。 WTRU的信噪比（SNR）估计装置被配置为基于所计算的接收信号样本的观测窗口来产生SNR估计，其中，每个观察窗口使用的采样数量被计算为信道的功能 信道速率估计装置产生的变化率估计值。

公开(公告)号：US20040032842A1

公开(公告)日：2004-02-19

申请号：US10643792

申请日：2003-08-19

Applicant: InterDigital Technology Corporation

Inventor： David K. Mesecher ,  Rui Yang ,  Ramon Cerda

IPC: H04B007/216

CPC classification number: H04B1/7085 ,  H04B1/707 ,  H04B1/7117 ,  H04L27/0014 ,  H04L27/2332 ,  H04L2027/0053 ,  H04L2027/0055 ,  H04L2027/0069 ,  H04L2027/0081

Abstract: A receiver for receiving a CDMA communication signal that is wirelessly transmitted includes a system for correcting phase errors in an information signal which has been transmitted. The correction system comprises circuitry for generating a mixing signal and for combining the mixing signal with said information signal to produce a correction signal. An analyzer analyzes the phase of said correction signal and generates an error signal based on the deviation of the analyzed phase from a reference phase. A bandwidth controller which recursively adjusts the phase of the correction signal such that the phase of said correction signal is substantially equal to said reference phase. The bandwidth controller then selects a bandwidth within an adjustable range based on the correction signal, estimates an offset by interrogating the error signal, and modifies said correction signal by the offset.

Abstract translation: 用于接收无线发送的CDMA通信信号的接收机包括用于校正已发送的信息信号中的相位误差的系统。 校正系统包括用于产生混合信号并将混合信号与所述信息信号组合以产生校正信号的电路。 分析器分析所述校正信号的相位，并且基于分析的相位与参考相位的偏差产生误差信号。 带宽控制器，递归地调整校正信号的相位，使得所述校正信号的相位基本上等于所述参考相位。 然后，带宽控制器基于校正信号选择可调整范围内的带宽，通过询问误差信号来估计偏移量，并通过偏移来修改所述校正信号。