公开(公告)号：US20040187069A1

公开(公告)日：2004-09-23

申请号：US10725779

申请日：2003-12-02

Applicant: InterDigital Technology Corporation

Inventor： Philip J. Pietraski ,  Gregory S. Sternberg

IPC: H03M013/03

CPC classification number: H03M13/2771 ,  H03M13/005 ,  H03M13/2792 ,  H03M13/2957 ,  H03M13/6362 ,  H03M13/6381 ,  H04L1/0067

Abstract: Detecting, avoiding and/or correcting problematic puncturing patterns in parity bit streams used when implementing punctured Turbo codes is achieved without having to avoid desirable code rates. This enables identification/avoidance of regions of relatively poor Turbo code performance. Forward error correction comprising Turbo coding and puncturing achieves a smooth functional relationship between any measure of performance and the effective coding rate resulting from combining the lower rate code generated by the Turbo encoder with puncturing of the parity bits. In one embodiment, methods to correct/avoid degradations due to Turbo coding are implemented by puncturing interactions when two or more stages of rate matching are employed.

Abstract translation: 检测，避免和/或纠正实现穿孔Turbo码时使用的奇偶校验比特流中有问题的打孔模式，而无需避免所需的代码率。 这使得能够识别/避免相对较差的Turbo码性能的区域。 包括Turbo编码和穿孔的前向纠错实现了任何性能测量与由Turbo编码器产生的较低速率码与奇偶校验位的打孔所产生的有效编码速率之间的平滑功能关系。 在一个实施例中，用于校正/避免由Turbo编码引起的劣化的方法通过采用两个或更多个速率匹配阶段时的穿孔交互实现。

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：US20030224744A1

公开(公告)日：2003-12-04

申请号：US10460099

申请日：2003-06-12

Applicant: InterDigital Technology Corporation

Inventor： Gregory S. Sternberg

IPC: H04B001/00

CPC classification number: H04B1/707 ,  H04B1/7087 ,  H04B1/709 ,  H04L2027/0065

Abstract: A receiver for use in a wireless communication system includes a voltage controlled oscillator and estimating means for obtaining a frequency estimate to adjust the voltage controlled oscillator, thereby correcting an oscillator frequency error. The estimating means performs a number of block correlations on a received signal with a known midamble reference. The output of the block correlators are conjugately multiplied and summed to produce a low-variance estimate of the phase change between correlators. A number of the largest summed values are located, and the located values that exceed a detection threshold are summed to provide a single complex number whose angle is an estimate of the phase change between the correlators.

Abstract translation: 用于无线通信系统的接收机包括压控振荡器和用于获得频率估计以调整压控振荡器的估计装置，从而校正振荡器频率误差。 估计装置对具有已知中间码参考的接收信号执行多个块相关。 块相关器的输出被共轭相乘并相加以产生相关器之间的相位变化的低方差估计。 定位多个最大求和值，并将超过检测阈值的定位值相加以提供单个复数，其角度是相关器之间的相位变化的估计。

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：US20030064693A1

公开(公告)日：2003-04-03

申请号：US10256734

申请日：2002-09-27

Applicant: InterDigital Technology Corporation

Inventor： Gregory S. Sternberg

IPC: H04B007/00

CPC classification number: H04B1/707 ,  H04B1/7087 ,  H04B1/709 ,  H04L2027/0065

Abstract: Method and apparatus for detection and correction of oscillator frequency error within a wireless communication system receiver. A frequency estimation having block correlators, conjugate product and sum, accumulation block, multipath detection and a loop filternull(accumulate block) (adaptive bandwidth). The multipath detection includes a search block, threshold detection block and a block for combining multipath components. The frequency difference attained between a base station (BS) local oscillator (LO) and a user equipment (UE) local oscillator is such that the UE LO does not deviate more than 0.1 PPM from the BS LO.

Abstract translation: 用于在无线通信系统接收机内检测和校正振荡器频率误差的方法和装置。 具有块相关器，共轭乘积和和，累积块，多路径检测和环路滤波器（累积块）（自适应带宽）的频率估计。 多路径检测包括搜索块，阈值检测块和用于组合多径分量的块。 在基站（BS）本地振荡器（LO）和用户设备（UE）本地振荡器之间获得的频差使得UE LO不偏离来自BS LO的0.1PPM以上。