公开(公告)号：WO2004036847A2

公开(公告)日：2004-04-29

申请号：PCT/US2003/032775

申请日：2003-10-14

Applicant: QUALCOMM INCORPORATED

Inventor： MADAPUSHI, Thejaswi Bharadwaj ,  SENDONARIS, Andrew

IPC: H04L12/56

CPC classification number: H04L47/10 ,  H04L47/14 ,  H04L47/36

Abstract: A method is provided for partitioning data into packets, where each packet has a type k selected from a set of packet types, and a length Lk, in bytes, of payload data. The method includes steps of: determining an expected successful transmit time Ek, for packets of type k, for each of the set of packet types; choosing an optimum packet type for which the value Ek / Lk is a minimum; and partitioning the payload data into packets of the optimum packet type. The method is enhanced by computing a bit error rate (BER) from the retransmission rate for single packet type and using the BER to compute retransmission rates for packets of the remaining types. The method is further enhanced by computing transition tables in advance and using the transition tables to select an optimum packet type.

Abstract translation: 提供了一种用于将数据划分成分组的方法，其中每个分组具有从一组分组类型中选择的类型k以及有效载荷数据的字节长度Lk。 该方法包括以下步骤：针对该组分组类型中的每一个，针对类型k的分组确定预期的成功传送时间Ek; 选择值Ek / Lk最小的最佳分组类型; 以及将有效载荷数据划分成最优分组类型的分组。 该方法通过从单个分组类型的重传率计算误码率（BER）并使用BER来计算其余类型的分组的重传率来增强该方法。 通过提前计算转换表并使用转换表来选择最佳数据包类型，该方法得到进一步增强。

公开(公告)号：WO2003041351A3

公开(公告)日：2003-05-15

申请号：PCT/US2002/035936

申请日：2002-11-07

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04L27/00

Abstract: In one embodiment, the invention is directed toward frequency tracking techniques using both the pilot and non-pilot symbols. The contribution of non-pilot symbols to the estimation can be weighted according to a confidence level. In some cases, soft decisions are generated for the non-pilot symbols and then used with the pilot symbols for frequency tracking.

公开(公告)号：WO2002060139A2

公开(公告)日：2002-08-01

申请号：PCT/US2002/002141

申请日：2002-01-23

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew ,  SUNDARESAN, Rajesh

IPC: H04L25/02

CPC classification number: H04L25/0236

Abstract: Techniques for incorporating non-pilot symbols along with pilot symbols to improve the estimate of the characteristics (e.g. amplitude and phase) of a communication link. A pilot filter weighs samples corresponding to pilot and non-pilot symbol by different sets of coefficients, which have values determined by and/or corresponding to the confidence in the detected sample. Samples corresponding to pilot symbols are typically associated with higher degree of confidence and are weighted more (e.g., with weights of 1.0). Samples corresponding to non-pilot symbols are typically associated with lower confidence and are weighted with values that may be variable and dependent on the degree of confidence in the samples (e.g., with weights ranging from 0.0 up to 1.0). The weights are updated based on a particular estimator such as a MAP (Maximum a Posteriori) estimator, a MLE (Maximum Likelihood Estimator), or some other estimator.

Abstract translation: 用于将非导频符号与导频符号一起并入以改进通信链路的特性（例如振幅和相位）的估计的技术。 导频滤波器通过不同的系数集来对与导频符号和非导频符号相对应的采样值，该系数具有由检测样本中的置信度确定的值和/或对应于其的值。 对应于导频符号的样本通常与更高的置信度相关联，并且被加权更多（例如，具有1.0的权重）。 对应于非导频符号的采样通常与较低的置信度相关联，并且可以是可变的并且取决于样本中的置信度（例如，权重范围从0.0到1.0）的值来加权。 基于诸如MAP（最大后验）估计器，MLE（最大似然估计器）或一些其它估计器的特定估计器来更新权重。

公开(公告)号：EP1456970A1

公开(公告)日：2004-09-15

申请号：EP02803188.8

申请日：2002-11-08

Applicant: QUALCOMM Incorporated

Inventor： SENDONARIS, Andrew

IPC: H04B7/005 ,  H04B1/707

CPC classification number: H04W52/24 ,  H04B1/7115

Abstract: When all of the fingers of a wireless rake receiver are "out-of-lock," the transmit power is initially maintained at a constant level. When the "out-of-lock" condition persists for an extended period of time, transmit power is increased in an effort to reacquire a lock with a subscriber unit or base station, as the case may be. An increase in transmit power may be effective in reacquiring lock when the cause of the out-of-lock condition is slow fading, rather than fast fading. Slow fading may be evidenced by persistence of the out-of-lock condition for an extended period of time. The length of the out-of-lock condition is used to selectively control transmit power and thereby promote quality of service. Transmit power is only increased when the fingers remain out-of-lock for an extended period of time, thereby avoiding undue increases in transmit power that could produce interference among different subscriber units.

Abstract translation: 当无线耙式接收机的所有手指都“锁定不正”时，发射功率最初保持在一个恒定的水平。 当“失锁”状态持续较长时间时，传输功率增加，以努力重新获取用户单元或基站（视具体情况而定）的锁定。 当失锁状态的原因是缓慢衰落而不是快速衰落时，传输功率的增加可能有效地重新获取锁定。 缓慢的衰落可以通过长时间的锁定状态的持续来证明。 锁定状态的长度用于选择性地控制发射功率，从而提高服务质量。 只有当手指长时间保持锁定时，才能增加发射功率，从而避免可能在不同用户单元之间产生干扰的发射功率的过度增加。

公开(公告)号：EP1354452A2

公开(公告)日：2003-10-22

申请号：EP02705964.1

申请日：2002-01-23

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew ,  SUNDARESAN, Rajesh

IPC: H04L25/02

CPC classification number: H04L25/0236

Abstract: Techniques for incorporating non-pilot symbols along with pilot symbols to improve the estimate of the characteristics (e.g., amplitude and phase) of a communication link. A pilot filter weighs samples corresponding to pilot and non-pilot symbol by different sets of coefficients, which have values determined by and/or corresponding to the confidence in the detected sample. Samples corresponding to pilot symbols are typically associated with higher degree of confidence and are weighted more (e.g., with weights of 1.0). Samples corresponding to non-pilot symbols are typically associated with lower confidence and are weighted with values that may be variable and dependent on the degree of confidence in the samples (e.g., with weights ranging from 0.0 up to 1.0). The weights are updated based on a particular estimator such as a MAP (Maximum a Posteriori) estimator, a MLE (Maximum Likelihood Estimator), or some other estimator.

公开(公告)号：WO2011119734A1

公开(公告)日：2011-09-29

申请号：PCT/US2011/029630

申请日：2011-03-23

Applicant: QUALCOMM INCORPORATED ,  SENDONARIS, Andrew

Inventor： SENDONARIS, Andrew

IPC: H04B7/06

CPC classification number: H04B7/0617 ,  H04B7/0682

Abstract: An improved method and apparatus for Mobile Transmit Diversity (MTD), or Uplink Transmit Diversity (ULTD) is disclosed. The mobile device either selects the best antenna at any given time, or transmits from both antennas using the best beam forming phase without feedback from the base station on which antenna to transmit from or which phase to use if using two antennas. Essentially operating in Open Loop MTD, a Hybrid Phase Sweeping algorithm requires testing of a fraction of phase hypotheses resulting in improved base station performance and higher data rates for the user. One among the set of transmission test phase hypotheses (for example: 0,90,180 and 270 degrees) is selected using a turn direction (left or right). The uplink transmission quality for the selected test phase hypotheses during a test period is compared with the uplink transmission quality during steady state. The current phase is changed to the test phase if the first quality value is better.

Abstract translation: 公开了一种用于移动发射分集（MTD）或上行链路发射分集（ULTD）的改进的方法和装置。 移动设备可以在任何给定时间选择最佳天线，或者使用最佳波束形成相位从两个天线发射，如果使用两个天线，则从哪个天线发射哪个天线或哪个相位使用来自基站的反馈。 基本上在开环MTD中运行，混合相位扫描算法需要测试一部分相位假设，从而提高用户的基站性能和更高的数据速率。 使用转向（左或右）选择传输测试阶段假设（例如：0,90,180和270度）中的一个。 在稳定状态期间将测试期间所选择的测试阶段假设的上行链路传输质量与上行链路传输质量进行比较。 如果第一个质量值更好，当前阶段将更改为测试阶段。

公开(公告)号：WO2011028413A1

公开(公告)日：2011-03-10

申请号：PCT/US2010/045800

申请日：2010-08-17

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

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

IPC: H04L1/06 ,  H04L1/18 ,  H04L1/00 ,  H04L25/03

CPC classification number: H04L1/06 ,  H04L1/005 ,  H04L1/0051 ,  H04L25/03171

Abstract: Certain aspects of the present disclosure relate to a method and an apparatus for unified iterative demodulation-decoding that can be employed in both multiple-input multiple-output (MIMO) and non-MIMO wireless systems.

Abstract translation: 本公开的某些方面涉及可以在多输入多输出（MIMO）和非MIMO无线系统中采用的用于统一迭代解调 - 解码的方法和装置。

公开(公告)号：WO2005039135A1

公开(公告)日：2005-04-28

申请号：PCT/US2004/034260

申请日：2004-10-14

Applicant: QUALCOMM INCORPORATED ,  SENDONARIS, Andrew ,  SHIU, Da-shan ,  FARMER, Dominick Gerard ,  LIN, Jeremy H. ,  SUBRAHMANYA, Parvathanathan ,  ROWLAND, Thomas K.

Inventor： SENDONARIS, Andrew ,  SHIU, Da-shan ,  FARMER, Dominick Gerard ,  LIN, Jeremy H. ,  SUBRAHMANYA, Parvathanathan ,  ROWLAND, Thomas K.

IPC: H04L27/00

CPC classification number: H04L27/0014 ,  G01S19/235 ,  H04B1/3805 ,  H04L2027/0077

Abstract: Systems and techniques are disclosed relating to wireless communications. These systems and techniques involve wireless communications wherein a device may be configured to recover an information signal from a carrier using a reference signal, detect a frequency error in the information signal; and periodically tune the reference signal to reduce the frequency error. To prevent GPS performance degradation during LO tuning, a tuning indicator signal may be generated and provided to the GPS receiver to disable GPS operation.

Abstract translation: 公开了与无线通信有关的系统和技术。 这些系统和技术涉及无线通信，其中设备可以被配置为使用参考信号从载波恢复信息信号，检测信息信号中的频率误差; 并定期调谐参考信号以减少频率误差。 为了在LO调谐期间防止GPS性能下降，可以产生调谐指示符信号并将其提供给GPS接收器以禁用GPS操作。

公开(公告)号：WO2003043220A1

公开(公告)日：2003-05-22

申请号：PCT/US2002/035878

申请日：2002-11-08

Applicant: QUALCOMM INCORPORATED

Inventor： SENDONARIS, Andrew

IPC: H04B7/005

CPC classification number: H04W52/24 ,  H04B1/7115

Abstract: When all of the fingers of a wireless rake receiver are "out-of-lock," the transmit power is initially maintained at a constant level. When the "out-of-lock" condition persists for an extended period of time, transmit power is increased in an effort to reacquire a lock with a subscriber unit or base station, as the case may be. An increase in transmit power may be effective in reacquiring lock when the cause of the out-of-lock condition is slow fading, rather than fast fading. Slow fading may be evidenced by persistence of the out-of-lock condition for an extended period of time. The length of the out-of-lock condition is used to selectively control transmit power and thereby promote quality of service. Transmit power is only increased when the fingers remain out-of-lock for an extended period of time, thereby avoiding undue increases in transmit power that could produce interference among different subscriber units.

Abstract translation: 当无线耙式接收机的所有指状物都“锁定不足”时，发射功率最初保持在恒定水平。 当“失锁”状态持续较长时间时，增加发射功率，努力重新获取用户单元或基站（视具体情况而定）的锁定。 当失锁状态的原因缓慢衰落而不是快速衰落时，发送功率的增加可能有效地重新获取锁定。 缓慢的衰落可以通过长时间的失锁状态的持续来证明。 锁定状态的长度用于选择性地控制发射功率，从而提高服务质量。 只有当手指长时间保持锁定时，才能增加发射功率，从而避免可能在不同用户单元之间产生干扰的发射功率的过度增加。

公开(公告)号：WO2011106571A3

公开(公告)日：2011-09-01

申请号：PCT/US2011/026138

申请日：2011-02-24

Applicant: QUALCOMM INCORPORATED ,  CUI, Tao ,  TANG, Jia ,  SENDONARIS, Andrew ,  SALVEKAR, Atul, A. ,  RAO, Subramanya P.N. ,  SUBRAHMANYA, Parvathanathan ,  XIAO, Lei ,  MCCLOUD, Michael, L. ,  BANISTER, Brian, C.

Inventor： CUI, Tao ,  TANG, Jia ,  SENDONARIS, Andrew ,  SALVEKAR, Atul, A. ,  RAO, Subramanya P.N. ,  SUBRAHMANYA, Parvathanathan ,  XIAO, Lei ,  MCCLOUD, Michael, L. ,  BANISTER, Brian, C.

IPC: H04L1/06 ,  H04L25/03 ,  H04L1/00

Abstract: Methods and apparatus for receiving, processing, and decoding MIMO transmissions in communications systems are described. A non-Gaussian approximation method for simplifying processing complexity where summations are used is described. Use of a priori information to facilitate determination of log likelihood ratios (LLRs) in receivers using iterative decoders is further described. A Gaussian or non-Gaussian approximation method using a priori information may be used to determine a K-best list of values for summation to generate an LLR is also described.

Abstract translation: 描述了用于在通信系统中接收，处理和解码MIMO传输的方法和设备。 描述了用于简化使用求和的处理复杂度的非高斯逼近方法。 进一步描述使用先验信息来促进使用迭代解码器来确定接收器中的对数似然比（LLR）。 使用先验信息的高斯或非高斯近似方法可以用于确定用于求和以产生LLR的K最佳值列表也被描述。