公开(公告)号：WO2010008830A2

公开(公告)日：2010-01-21

申请号：PCT/US2009048263

申请日：2009-06-23

Applicant: QUALCOMM INC ,  LU FENG ,  SRIPATHI PRASHANT UDUPA ,  ZHAO LIANG ,  SUBRAHMANYA PARVATHANATHAN ,  RAO SUBRAMANYA P

Inventor： LU FENG ,  SRIPATHI PRASHANT UDUPA ,  ZHAO LIANG ,  SUBRAHMANYA PARVATHANATHAN ,  RAO SUBRAMANYA P

IPC: H04B1/10

CPC classification number: H04W52/245 ,  H04B17/345 ,  H04L1/0026 ,  H04L1/20 ,  H04W52/241 ,  H04W52/243

Abstract: System(s) and method(s) are provided for generating phase-noise resilient channel quality indicator(s). A pilot signal utilized to determine a channel quality indicator is rotated to be aligned to a phase reference signal. Separate noise evaluations in quadrature and in-phase directions are utilized, at least in part, to generate a net noise estimate that is phase-noise compensated or resilient. For example, various combination schemes of quadrature and in-phase noise evaluations can be exploited to generate a net noise estimate, the schemes include weighted average of in-phase and quadrature noise estimates and running averages thereof. Simulation of net noise estimates as a function of geometry conditions reveal that the combination schemes provide substantive mitigation of phase-noise, thus making CQI generation phase-noise resilient.

Abstract translation: 提供了用于产生相位噪声弹性信道质量指示符的系统和方法。 用于确定信道质量指示符的导频信号被旋转以与相位参考信号对准。 至少部分地利用正交和同相方向上的独立噪声评估来产生相位噪声补偿或弹性的净噪声估计。 例如，可以利用正交和同相噪声评估的各种组合方案来产生净噪声估计，该方案包括同相和正交噪声估计的加权平均值及其运行平均值。 作为几何条件的函数的净噪声估计的模拟表明，组合方案提供了相位噪声的实质性减轻，从而使得CQI生成相位噪声具有弹性。

公开(公告)号：WO2011025660A1

公开(公告)日：2011-03-03

申请号：PCT/US2010/045217

申请日：2010-08-11

Applicant: QUALCOMM INCORPORATED ,  MERGEN, Gokhan ,  RAO, Subramanya, P. ,  SIDI, Jonathan

Inventor： MERGEN, Gokhan ,  RAO, Subramanya, P. ,  SIDI, Jonathan

IPC: H04B1/707 ,  H04B7/04 ,  H04L1/06

CPC classification number: H04B7/0413 ,  H04B1/71072 ,  H04L1/0002 ,  H04L1/0036 ,  H04L1/0048 ,  H04L1/06 ,  H04L1/1845 ,  H04L25/0224

Abstract: Certain aspects provide a method for determining decoding order and reconstruction weights for decoded streams to be cancelled in a MIMO system with successive interference cancellation, based on estimates of the channel characteristics, the received composite signal and parameters of the system.

Abstract translation: 某些方面提供一种用于基于信道特性，接收到的复合信号和系统的参数的估计，确定具有连续干扰消除的MIMO系统中要解除的解码流的解码顺序和重构权重的方法。

公开(公告)号：WO2011139770A1

公开(公告)日：2011-11-10

申请号：PCT/US2011/034140

申请日：2011-04-27

Applicant: QUALCOMM Incorporated ,  TANG, Jia ,  SALVEKAR, Atul A. ,  KHARE, Shantanu ,  MERGEN, Gokhan ,  SIDI, Jonathan ,  PARK, Jong Hyeon ,  RAO, Subramanya P. ,  GUPTA, Abhinav

Inventor： TANG, Jia ,  SALVEKAR, Atul A. ,  KHARE, Shantanu ,  MERGEN, Gokhan ,  SIDI, Jonathan ,  PARK, Jong Hyeon ,  RAO, Subramanya P. ,  GUPTA, Abhinav

IPC: H04L1/00 ,  H04L25/03 ,  H04B1/7107

CPC classification number: H04L25/03305 ,  H04L1/0048 ,  H04L1/0054 ,  H04L25/03331

Abstract: A method for using a joint decoding engine in a wireless device is disclosed. A first symbol stream and a second symbol stream in a received multiple input multiple output (MIMO) signal is determined. A scaled channel estimate for a wireless transmission channel and a scaled noise covariance of the MIMO signal are also determined. The scaled channel estimate and the first symbol stream are whitened. Max log maximum a posteriori (MLM) processing is performed on the whitened first symbol stream to produce a first data stream. The first data stream may be de-rate matched and decoded to produce a decoded first data stream.

Abstract translation: 公开了一种在无线装置中使用联合解码引擎的方法。 确定接收的多输入多输出（MIMO）信号中的第一符号流和第二符号流。 还确定了无线传输信道的缩放信道估计和MIMO信号的缩放噪声协方差。 缩放的信道估计和第一符号流被白化。 对白化的第一符号流执行最大对数最大后验（MLM）处理以产生第一数据流。 第一数据流可以被去速率匹配和解码以产生解码的第一数据流。

公开(公告)号：WO2011106571A2

公开(公告)日：2011-09-01

申请号：PCT/US2011026138

申请日：2011-02-24

Applicant: QUALCOMM INC ,  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

CPC classification number: H04L1/005 ,  H04L1/06 ,  H04L25/03242 ,  H04L25/067

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传输的方法和装置。 描述了用于简化使用求和的处理复杂度的非高斯近似方法。 进一步描述使用先验信息以便于使用迭代解码器确定接收机中的对数似然比（LLR）。 也可以使用使用先验信息的高斯或非高斯近似方法来确定用于求和以产生LLR的K个最佳值列表。

公开(公告)号：WO2010033704A3

公开(公告)日：2010-11-04

申请号：PCT/US2009057321

申请日：2009-09-17

Applicant: QUALCOMM INC ,  CUI TAO ,  LU FENG ,  GOTETI ANIL KUMAR ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN

Inventor： CUI TAO ,  LU FENG ,  GOTETI ANIL KUMAR ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN

IPC: H04L1/20 ,  H04L1/00

CPC classification number: H04W28/0236 ,  H04L1/0026 ,  H04L1/203 ,  H04W28/0205

Abstract: A method for optimizing throughput in a wireless communication system is disclosed. A target metric is estimated based on previous acknowledgment data. A channel quality indicator offset is determined based on the target metric. A channel quality indicator is adjusted based on the channel quality indicator offset. The channel quality indicator indicates the quality of a wireless transmission channel.

Abstract translation: 公开了一种用于优化无线通信系统中的吞吐量的方法。 目标度量基于先前的确认数据进行估计。 信道质量指标偏移量是基于目标度量确定的。 信道质量指标根据信道质量指标偏移进行调整。 信道质量指示符指示无线传输信道的质量。

公开(公告)号：WO2011025661A1

公开(公告)日：2011-03-03

申请号：PCT/US2010/045221

申请日：2010-08-11

Applicant: QUALCOMM INCORPORATED ,  MERGEN, Gokhan ,  RAO, Subramanya, P. ,  SIDI, Jonathan

Inventor： MERGEN, Gokhan ,  RAO, Subramanya, P. ,  SIDI, Jonathan

IPC: H04B7/04 ,  H04B1/707 ,  H04L1/06

CPC classification number: H04B7/0854 ,  H04B7/0452 ,  H04J11/004 ,  H04L1/0026 ,  H04L1/0048 ,  H04L1/06 ,  H04L1/1812

Abstract: Certain aspects provide a method for determining decoding order and reconstruction weights for decoded streams to be cancelled in a MIMO system with successive interference cancellation, based on estimates of the channel characteristics, the received composite signal and parameters of the system.

Abstract translation: 某些方面提供一种用于基于信道特性，接收到的复合信号和系统的参数的估计，确定具有连续干扰消除的MIMO系统中要解除的解码流的解码顺序和重构权重的方法。

公开(公告)号：WO2010028351A3

公开(公告)日：2010-03-11

申请号：PCT/US2009/056206

申请日：2009-09-08

Applicant: QUALCOMM Incorporated ,  CUI, Tao ,  LU, Feng ,  SETHURAMAN, Vignesh ,  RAO, Subramanya P. ,  SUBRAHMANYA, Parvathanathan ,  GOTETI, Anil Kumar

Inventor： CUI, Tao ,  LU, Feng ,  SETHURAMAN, Vignesh ,  RAO, Subramanya P. ,  SUBRAHMANYA, Parvathanathan ,  GOTETI, Anil Kumar

IPC: H04L1/00

Abstract: Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.

公开(公告)号：WO2010028351A2

公开(公告)日：2010-03-11

申请号：PCT/US2009056206

申请日：2009-09-08

Applicant: QUALCOMM INC ,  CUI TAO ,  LU FENG ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN ,  GOTETI ANIL KUMAR

Inventor： CUI TAO ,  LU FENG ,  SETHURAMAN VIGNESH ,  RAO SUBRAMANYA P ,  SUBRAHMANYA PARVATHANATHAN ,  GOTETI ANIL KUMAR

IPC: H04W16/04

CPC classification number: H04L1/0026

Abstract: Various embodiments are disclosed which predict the channel quality indicator (CQI) in High Speed Downlink Packet Access (HSDPA). The accuracy of CQI is crucial for HSDPA performance. In some HSDPA systems the CQI may be as much as three (3) subframes stale. Accordingly, the prediction of CQI values is required in order to efficiently schedule data for transmission over the communication channel. Various embodiments disclose first order adaptive IIR filters which are significantly less complex than the finite impulse response (FIR) counterparts and achieve similar accuracy. By minimizing the mean squared error (MSE), an exact gradient descent algorithm may be used as well as two embodiment pseudolinear regression algorithms.

Abstract translation: 公开了预测高速下行链路分组接入（HSDPA）中的信道质量指示符（CQI）的各种实施例。 CQI的准确性对于HSDPA性能至关重要。 在一些HSDPA系统中，CQI可能多达三（3）个子帧陈旧。 因此，为了有效地调度用于在通信信道上传输的数据，需要预测CQI值。 各种实施例公开了一阶自适应IIR滤波器，其比有限脉冲响应（FIR）对应物复杂得多，并且实现类似的精度。 通过最小化均方误差（MSE），可以使用精确的梯度下降算法以及两个实施例的伪线性回归算法。

公开(公告)号：WO2010008830A3

公开(公告)日：2010-01-21

申请号：PCT/US2009/048263

申请日：2009-06-23

Applicant: QUALCOMM INCORPORATED ,  LU, Feng ,  SRIPATHI, Prashant, Udupa ,  ZHAO, Liang ,  SUBRAHMANYA, Parvathanathan ,  RAO, Subramanya, P.

Inventor： LU, Feng ,  SRIPATHI, Prashant, Udupa ,  ZHAO, Liang ,  SUBRAHMANYA, Parvathanathan ,  RAO, Subramanya, P.

IPC: H04L1/20

Abstract: System(s) and method(s) are provided for generating phase-noise resilient channel quality indicator(s). A pilot signal utilized to determine a channel quality indicator is rotated to be aligned to a phase reference signal. Separate noise evaluations in quadrature and in-phase directions are utilized, at least in part, to generate a net noise estimate that is phase-noise compensated or resilient. For example, various combination schemes of quadrature and in-phase noise evaluations can be exploited to generate a net noise estimate, the schemes include weighted average of in-phase and quadrature noise estimates and running averages thereof. Simulation of net noise estimates as a function of geometry conditions reveal that the combination schemes provide substantive mitigation of phase-noise, thus making CQI generation phase-noise resilient.

公开(公告)号：WO2010033704A2

公开(公告)日：2010-03-25

申请号：PCT/US2009/057321

申请日：2009-09-17

Applicant: QUALCOMM Incorporated ,  CUI, Tao ,  LU, Feng ,  GOTETI, Anil Kumar ,  SETHURAMAN, Vignesh ,  RAO, Subramanya P. ,  SUBRAHMANYA, Parvathanathan

Inventor： CUI, Tao ,  LU, Feng ,  GOTETI, Anil Kumar ,  SETHURAMAN, Vignesh ,  RAO, Subramanya P. ,  SUBRAHMANYA, Parvathanathan

IPC: H04L5/00

CPC classification number: H04W28/0236 ,  H04L1/0026 ,  H04L1/203 ,  H04W28/0205

Abstract: A method for optimizing throughput in a wireless communication system is disclosed. A target metric is estimated based on previous acknowledgment data. A channel quality indicator offset is determined based on the target metric. A channel quality indicator is adjusted based on the channel quality indicator offset. The channel quality indicator indicates the quality of a wireless transmission channel.

Abstract translation: 公开了一种用于优化无线通信系统中的吞吐量的方法。 基于先前的确认数据来估计目标度量。 基于目标度量确定信道质量指示符偏移量。 基于信道质量指示符偏移量调整信道质量指示符。 信道质量指示符表示无线传输信道的质量。