公开(公告)号：WO2011028414A1

公开(公告)日：2011-03-10

申请号：PCT/US2010/045813

申请日：2010-08-17

Applicant: QUALCOMM INCORPORATED ,  TANG, Jia ,  SALVEKAR, Atul, A. ,  SUBRAHMANYA, Parvathanathan ,  SENDONARIS, Andrew ,  KHARE, Shantanu ,  PARK, Jong Hyeon ,  BANISTER, Brian, Clarke ,  CUI, Tao

Inventor： TANG, Jia ,  SALVEKAR, Atul, A. ,  SUBRAHMANYA, Parvathanathan ,  SENDONARIS, Andrew ,  KHARE, Shantanu ,  PARK, Jong Hyeon ,  BANISTER, Brian, Clarke ,  CUI, Tao

IPC: H04L1/06

CPC classification number: H04L1/005 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1829 ,  H04L25/0204 ,  H04L25/023 ,  H04L25/0244

Abstract: Certain aspects of the present disclosure relate to a method for iterative decoding with re-transmissions of data and to a method for iterative decoding with soft decision directed channel estimation.

Abstract translation: 本公开的某些方面涉及用于重新传输数据的迭代解码的方法以及用于通过软判决定向信道估计进行迭代解码的方法。

公开(公告)号：WO2004004154A2

公开(公告)日：2004-01-08

申请号：PCT/US2003/020405

申请日：2003-06-26

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04B7/005

CPC classification number: H04W52/283 ,  H04W52/223 ,  H04W52/282 ,  H04W52/60

Abstract: A method and apparatus are provided for determining adjustments to be made to a transmitter based on the velocity or location of a wireless communication device in relation to a wireless network infrastructure. The transmitter to be adjusted can be located in either the wireless communication device, or in a device in the wireless communication infrastructure, or both.

Abstract translation: 提供了一种方法和设备，用于基于无线通信设备相对于无线网络基础设施的速度或位置来确定要对发射机进行的调整。 要调整的发射机可以位于无线通信设备中，也可以位于无线通信基础设施中的设备中，或两者兼有。

公开(公告)号：WO2003041298A1

公开(公告)日：2003-05-15

申请号：PCT/US2002/035935

申请日：2002-11-07

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04B7/005

CPC classification number: H04W52/228 ,  H04B2201/70701 ,  H04W52/08 ,  H04W52/226

Abstract: The invention is directed toward methods for estimating the power of a received signal encoded with both pilot and non-pilot symbols. The method may include separately accumulating the pilot symbols and the non-pilot symbols and then estimating signal power by calculating a weighted sum of the accumulated pilot and non-pilot symbols. In this manner, a more accurate estimate of the power of the received signal can be obtained.

Abstract translation: 本发明涉及用于估计用导频和非导频符号两者编码的接收信号的功率的方法。 该方法可以包括分别累积导频符号和非导频符号，然后通过计算累加的导频符号和非导频符号的加权和来估计信号功率。 以这种方式，可以获得对接收信号的功率的更准确的估计。

公开(公告)号：WO2003024046A2

公开(公告)日：2003-03-20

申请号：PCT/US2002/027960

申请日：2002-08-29

Applicant: QUALCOMM, INCORPORATED

Inventor： SUBRAHMANYA, Parvathanathan ,  SENDONARIS, Andrew

IPC: H04L27/00

CPC classification number: H04L27/2332 ,  H04B2201/70701 ,  H04L2027/0055 ,  H04L2027/0065 ,  H04L2027/0081 ,  H04L2027/0087

Abstract: Techniques to acquire and track a received signal instance (or multipath) based on one or more transmitted pilots. In an aspect, a frequency tracking loop is provided to acquire and track the multipath, and supports a number of loop modes ( e.g. , acquisition and tracking modes). Each loop mode may be associated with a respective frequency detector and a set of values for a set of elements in the loop. In another aspect, several frequency detectors are provided for deriving estimates of the frequency error in the downconversion of the multipath ( e.g. , from radio frequency to baseband). In one design, maximum likelihood estimates of the frequency error are derived based on the recovered pilot symbols. In another design, the frequency error estimates for the multipath are derived based on the frequency error estimated for each transmitted signal.

Abstract translation: 基于一个或多个传输的导频获取和跟踪接收的信号的技术。 在一方面，提供频率跟踪环路并且支持多种环路模式（例如采集和跟踪模式）。 每个循环模式可以与相应的频率检测器和一组循环中的元件的值相关联。 在另一方面，提供了几个频率检测器用于导出下变频中的频率误差的估计（例如，从射频到基带）。 在一种设计中，基于恢复的导频符号导出频率误差的最大似然估计。 在另一种设计中，基于针对每个发射信号估计的频率误差导出多路径的频率误差估计。

公开(公告)号：WO2003009558A1

公开(公告)日：2003-01-30

申请号：PCT/US2002/022788

申请日：2002-07-16

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04L27/227

CPC classification number: H04L27/0014 ,  H04L2027/0024 ,  H04L2027/0055 ,  H04L2027/0065

Abstract: A cross product is determined for a received signal. A dot product is also determined for the received signal. If the cross product is greater than a predetermined threshold, the cross product is decremented by the product of the dot product multiplied by a constant value. If the cross product is greater than or equal to the predetermined threshold, the cross product is incremented by the product of the dot product multiplied by the constant value. The incrementing or decrementing is continued until the frequency error approaches a minimum value.

Abstract translation: 确定接收信号的交叉积。 还针对接收到的信号确定点积。 如果十字积大于预定阈值，则交叉乘积乘积乘积恒定值的积乘积。 如果交叉积大于或等于预定阈值，则交叉乘积乘以点乘积乘以常数值的乘积。 继续递增或递减直到频率误差接近最小值。

公开(公告)号：WO2004077695A1

公开(公告)日：2004-09-10

申请号：PCT/US2004/005544

申请日：2004-02-24

Applicant: QUALCOMM INCORPORATED ,  OH, Hyukjun ,  SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin ,  AMERGA, Messay ,  HSU, Chih-Ping ,  RIDDLE, Christopher ,  SENDONARIS, Andrew

Inventor： OH, Hyukjun ,  SUBRAHMANYA, Parvathanathan ,  KASTURI, Nitin ,  AMERGA, Messay ,  HSU, Chih-Ping ,  RIDDLE, Christopher ,  SENDONARIS, Andrew

IPC: H04B7/005

CPC classification number: H04W52/56 ,  H04W52/40 ,  H04W52/58

Abstract: The reliability of transmit power control (TPC) commands received from a transmitter is determined based on a TPC target value. The TPC target value is derived based on a TPC threshold and possibly a weight, depending on the receiver implementation. A received TPC command is considered reliable if its absolute value exceeds the TPC target value. Received TPC commands deemed as unreliable are discarded and not used for power control. Multiple TPC target values, used for detecting UP and DOWN commands, may be derived with multiple scaling factors. For a receiver in soft handover and receiving TPC commands from multiple transmitters, a different TPC target value may be derived for each transmitter. The received TPC commands for each transmitter are compared against that transmitter's TPC target value. Received TPC commands deemed as unreliable are discarded and not combined.

Abstract translation: 基于TPC目标值确定从发射机接收的发射功率控制（TPC）命令的可靠性。 TPC目标值基于TPC阈值和可能的权重导出，这取决于接收机实现。 如果接收到的TPC命令的绝对值超过TPC目标值，则认为它是可靠的。 被认为不可靠的TPC命令被丢弃，不用于功率控制。 用于检测UP和DOWN命令的多个TPC目标值可以用多个缩放因子导出。 对于软切换中的接收机和从多个发射机接收TPC命令，可以为每个发射机导出不同的TPC目标值。 每个发射机接收的TPC命令与该发射机的TPC目标值进行比较。 被认为不可靠的TPC命令被丢弃并不组合。

公开(公告)号：WO2004023679A2

公开(公告)日：2004-03-18

申请号：PCT/US2003/028110

申请日：2003-09-05

Applicant: QUALCOMM, INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04B7/26

CPC classification number: H04W56/0035 ,  H04W56/0055 ,  H04W92/10

Abstract: A method and apparatus are provided for adjusting a communication receiver based on the velocity of a wireless communication device in relation to a base station. The receiver is adjusted by estimating a frequency shift of a communication signal transmitted between the base station and the wireless communication device (WCD) based on the WCD velocity. Using this estimate, adjustments are made to the communication receiver to account for the frequency shift of the communication signal. Adjustments to the receiver can include adjusting frequency and time tracking loops to account for the change in frequency of a signal received by, and from, the WCD as it moves relative to the base station. The receiver may be located in the WCD, or in the network infrastructure, or in both.

Abstract translation: 提供了一种用于基于无线通信设备相对于基站的速度调整通信接收机的方法和设备。 通过基于WCD速度估计在基站和无线通信设备（WCD）之间发送的通信信号的频移来调整接收器。 使用这个估计，对通信接收机进行调整以考虑通信信号的频移。 对接收机的调整可以包括调整频率和时间跟踪环路，以考虑WCD相对于基站移动时WCD接收到的信号的频率变化。 接收器可能位于WCD，网络基础设施或两者中。

公开(公告)号：WO2004021585A2

公开(公告)日：2004-03-11

申请号：PCT/US2003/027269

申请日：2003-08-29

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew ,  SHIU, Da-shan ,  PATTERSON, David M. ,  SUBRAHMANYA, Parvathanathan ,  TERASAWA, Daisuke

IPC: H04B1/00

CPC classification number: H04B1/70754

Abstract: A method and apparatus for using information about a mobile terminal's location relative to a base station can improve performance of a communication system. In addition, information about the mobile terminal's velocity relative to the base station may be used to improve performance of the communication system. The location information may be used to estimate a nominal PN offset, and a set of PN offset to use, for processing communication signals. The velocity information may be used to estimate a nominal frequency of the communication signals.

Abstract translation: 使用关于移动终端相对于基站的位置的信息的方法和装置可以提高通信系统的性能。 另外，可以使用关于移动终端相对于基站的速度的信息来改善通信系统的性能。 可以使用位置信息来估计用于处理通信信号的标称PN偏移和要使用的一组PN偏移。 速度信息可以用于估计通信信号的标称频率。

公开(公告)号：WO2002073824A1

公开(公告)日：2002-09-19

申请号：PCT/US2002/007351

申请日：2002-03-08

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04B1/707

CPC classification number: H04B1/7117 ,  H04B2001/70706

Abstract: A process and apparatus for timing occurs in a timing discriminator that is part of a time tracking loop. The timing discrimination that prevents Rake finger merging. The process for timing discrimination discriminator is coupled to an input signal. The process begins by gathering early, ontime, and late samples of the input signal. Early, Ontime, and Late parameters are then derived in response to the samples. The timing discriminator output is generated in response to a predetermined relationship between the Early, Ontime, and Late parameters. The process and apparatus enables Rake fingers to freely track their paths. This improves the receiver performance.

Abstract translation: 用于定时的过程和装置发生在作为时间跟踪环路的一部分的定时鉴别器中。 防止Rake手指合并的时间歧视。 定时鉴别鉴别器的处理与输入信号耦合。 该过程开始于收集输入信号的早，时，晚样本。 然后根据样品导出早期，准时和晚期参数。 响应于Early，Ontime和Late参数之间的预定关系产生定时鉴别器输出。 该过程和装置使得Rake手指能够自由地跟踪其路径。 这提高了接收机性能。

公开(公告)号：EP1457011B1

公开(公告)日：2018-05-23

申请号：EP02780594.4

申请日：2002-11-07

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  H04L2027/0065

Abstract: In one embodiment, the invention is directed toward frequency tracking techniques using control symbols that include both pilot and non-pilot symbols. For example, both the pilot and non-pilot symbols can be used in estimating frequency error of a received signal. The contribution of non-pilot symbols to the estimation can be weighted according to a confidence level associated with each non-pilot symbol. In some cases, soft decisions are generated for the non-pilot symbols and then used with the pilot symbols for frequency tracking. In this manner, the frequency tracking loop can be improved.