公开(公告)号：WO2008061123A2

公开(公告)日：2008-05-22

申请号：PCT/US2007/084641

申请日：2007-11-14

Applicant: QUALCOMM Incorporated ,  SHIM, Byonghyo ,  KANG, Inyup ,  ABRISHAMKAR, Farrokh ,  SAMBHWANI, Sharad, Deepak

Inventor： SHIM, Byonghyo ,  KANG, Inyup ,  ABRISHAMKAR, Farrokh ,  SAMBHWANI, Sharad, Deepak

IPC: H04L25/03

CPC classification number: H04L25/03006 ,  H04B1/71072 ,  H04L2025/03617

Abstract: Techniques for recovering a desired transmission in the presence of interfering transmissions are described. For successive equalization and cancellation (SEC), equalization is performed on a received signal to obtain an equalized signal for a first set of code channels. The first set may include all code channels for one sector, a subset of all code channels for one sector, multiple code channels for multiple sectors, etc. Data detection is then performed on the equalized signal to obtain a detected signal for the first set of code channels. A signal for the first set of code channels is reconstructed based on the detected signal. The reconstructed signal for the first set of code channels is then canceled from the received signal. Equalization, data detection, reconstruction, and cancellation are performed for at least one additional set of code channels in similar manner.

Abstract translation: 描述了在存在干扰传输的情况下恢复所需传输的技术。 对于连续均衡和消除（SEC），对接收到的信号执行均衡以获得第一组码信道的均衡信号。 第一组可以包括一个扇区的所有码信道，一个扇区的所有码信道的子集，多个扇区的多个码信道等。然后，对均衡信号执行数据检测，以获得第一组的第一组的检测信号 代码渠道 基于检测到的信号重建用于第一组码信道的信号。 然后，从接收到的信号中取消用于第一组码信道的重建信号。 对于至少一个附加的代码信道集合以类似的方式执行均衡，数据检测，重建和消除。

公开(公告)号：WO2004038947A1

公开(公告)日：2004-05-06

申请号：PCT/US2003/033659

申请日：2003-10-22

Applicant: QUALCOMM, INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  KREUTZ-DELGADO, Kenneth

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H03H21/003 ,  H04B2201/70701

Abstract: A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver (508) and a front-end processing and despreading component (510) in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component (514) is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a pilot estimator that includes a Kalman filter to produce a pilot estimate. The Kalman filter is determined through use of a prediction error method based on an innovations representation of the original pilot signal. A demodulation component (518) is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols.

Abstract translation: 公开了一种在无线通信系统中用于提供估计的导频信号的系统。 该系统包括与接收机进行电子通信以解扩CDMA信号的接收器（508）和前端处理和解扩部件（510）。 导频估计部件（514）与前端处理和解扩部件电子通信，用于使用包括卡尔曼滤波器的导频估计器来估计原始导频信号以产生导频估计。 通过使用基于原始导频信号的创新表示的预测误差方法来确定卡尔曼滤波器。 解调部件（518）与导频估计部件和用于提供解调数据符号的前端处理和解扩部件电子通信。

公开(公告)号：WO2003105376A2

公开(公告)日：2003-12-18

申请号：PCT/US2003/017894

申请日：2003-06-05

Applicant: QUALCOMM, INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  KREUTZ-DELGADO, Kenneth

IPC: H04B17/07

CPC classification number: H04B1/7101 ,  H04B2201/70701

Abstract: A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Kalman filter to produce a pilot estimate. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and a Gauss-Newton algorithm and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.

Abstract translation: 公开了一种在无线通信系统中用于提供估计的导频信号的系统。 该系统包括接收机和与接收机进行电子通信的前端处理和解扩部件，用于解扩CDMA信号。 导频估计部件与前端处理和解扩部件进行电子通信，用于使用卡尔曼滤波器估计原始导频信号以产生导频估计。 解调部件与导频估计部件以及用于提供解调数据符号的前端处理和解扩部件进行电子通信。 卡尔曼滤波器由离线系统识别过程配置，该过程使用预测误差法和高斯 - 牛顿算法计算参数，并使用卡尔曼滤波器生成状态估计。 迭代执行计算和生成以训练卡尔曼滤波器进行实时操作。

公开(公告)号：WO2003105363A3

公开(公告)日：2003-12-18

申请号：PCT/US2003/017892

申请日：2003-06-05

Applicant: QUALCOMM, INCORPORATED

Inventor： ABRISHAMKAR, Farrokh ,  KREUTZ-DELGADO, Kenneth

IPC: H04B1/707

Abstract: A system is disclosed for use in a wireless communication system to provide an estimated pilot signal. The system includes a receiver and a front-end processing and despreading component in electronic communication with the receiver for despreading a CDMA signal. A pilot estimation component is in electronic communication with the front-end processing and despreading component for estimating an original pilot signal using a Kalman filter to produce a pilot estimate. A demodulation component is in electronic communication with the pilot estimation component and the front-end processing and despreading component for providing demodulated data symbols. The Kalman filter is configured by an offline system identification process that calculates parameters using a prediction error method and pseudo linear regression and generates state estimates using the Kalman filter. The calculating and generating are iteratively performed to train the Kalman filter for real-time operation.

公开(公告)号：WO2002095963A1

公开(公告)日：2002-11-28

申请号：PCT/US2002/011597

申请日：2002-04-09

Applicant: QUALCOMM INCORPORATED

Inventor： CHALLA, Raghu ,  ABRISHAMKAR, Farrokh ,  FEVRIER, Ian ,  GLAZKO, Serguei ,  LEE, Way-Shing ,  PATRICK, Christopher ,  SIH, Gil

IPC: H04B1/00

CPC classification number: H04W56/0035 ,  H04B1/7075 ,  H04W56/001 ,  H04W92/10

Abstract: A spread spectrum wireless device (100) may include a receiver (110), a searcher (128), a search controller (130) and other features. The search controller (130) selectively generates control signals to control the searcher (128), which searches for a spread-spectrum signal. In one embodiment, the architecture of the searcher (128) is dynamically configurable by the search controller (130) to selectively search multiple channels using multiple frequency bins for the signal.

Abstract translation: 扩频无线设备（100）可以包括接收机（110），搜索器（128），搜索控制器（130）和其他特征。 搜索控制器（130）选择性地产生控制信号以控制寻找扩频信号的搜索器（128）。 在一个实施例中，搜索器（128）的架构由搜索控制器（130）动态地配置，以选择性地使用针对该信号的多个频率仓搜索多个信道。