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31. 发明申请

WO2007059517A3 EQUALIZER FOR A RECEIVER IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
公开(公告)号：WO2007059517A3
公开(公告)日：2007-05-24
申请号：PCT/US2006/060947
申请日：2006-11-15
申请人： QUALCOMM INCORPORATED , MERGEN, Gokhan , SUBRAHMANYA, Parvathanathan , KASTURI, Nitin , SUNDARESAN, Rajesh
发明人： MERGEN, Gokhan , SUBRAHMANYA, Parvathanathan , KASTURI, Nitin , SUNDARESAN, Rajesh
IPC分类号： H04L25/03 , H04L7/04 , H04L7/033 , H04B7/06 , H04B7/08
摘要： Techniques for performing equalization at a receiver are described. In an aspect, equalization is performed by sub-sampling an over-sampled input signal to obtain multiple sub-sampled signals. An over-sampled channel impulse response estimate is derived and sub-sampled to obtain multiple sub-sampled channel impulse response estimates. At least one set of equalizer coefficients is derived based on at least one sub-sampled channel impulse response estimate. At least one sub-sampled signal is filtered with the at least one set of equalizer coefficients to obtain at least one output signal. One sub-sampled signal (e.g., with largest energy) may be selected and equalized based on a set of equalizer coefficients derived from an associated sub-sampled channel impulse response estimate. Alternatively, the multiple sub-sampled signals may be equalized based on multiple sets of equalizer coefficients, which may be derived separately or jointly. The equalizer coefficients may be derived in the time domain or frequency domain.

32. 发明申请

WO2006084244A3 ERASURE DETECTION FOR A TRANSPORT CHANNEL WITH AN UNKNOWN FORMAT 审中-公开
标题翻译：具有未知格式的运输通道的擦除检测
公开(公告)号：WO2006084244A3
公开(公告)日：2006-11-23
申请号：PCT/US2006004129
申请日：2006-01-31
申请人： QUALCOMM INC , VISVANATHAN ARUN , BUTALA AMIT , SUBRAHMANYA PARVATHANATHAN
发明人： VISVANATHAN ARUN , BUTALA AMIT , SUBRAHMANYA PARVATHANATHAN
IPC分类号： H04L1/00 , H04B7/005 , H04W52/12 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
CPC分类号： H04W52/12 , H04B1/7172 , H04L1/20 , H04L1/201 , H04L1/208 , H04W52/18 , H04W52/20 , H04W52/24 , H04W52/44
摘要： To perform erasure detection for an intermittently active transport channel with unknown format, a receiver determines an energy metric and a symbol error rate (SER) for a received block with CRC failure. The receiver computes uncorrelated random variables u and v for the received block based on the energy metric and SER, the estimated means and standard deviations of the energy metric and SER, and a correlation coefficient indicative of the correlation between the energy metric and SER. The receiver then evaluates the uncorrelated random variables u and v based on at least one decision criterion and declares the received block to be an erased block or a DTX block based on the result of the evaluation. The decision criterion may be defined based on a target probability of false alarm and adjusted based on another metric, such as a zero state bit, for the received block.
摘要翻译：为了对具有未知格式的间歇活动传输信道执行擦除检测，接收器确定CRC失败的接收块的能量度量和符号错误率（SER）。接收器基于能量度量和SER，能量度量和SER的估计均值和标准偏差以及指示能量度量和SER之间的相关性的相关系数来计算接收块的不相关随机变量u和v。接收器然后基于至少一个判定标准评估不相关的随机变量u和v，并且基于评估的结果将接收到的块声明为擦除块或DTX块。可以基于虚警的目标概率来定义判决标准，并且基于接收块的另一个度量（例如零状态比特）来调整判决标准。

33. 发明申请

WO2005114866A1 MITIGATION OF TRANSMIT POWER SPIKES FOR A POWER-CONTROLLED DATA TRANSMISSION IN A WIRELESS COMMUNICATION SYSTEM 审中-公开
标题翻译：用于无线通信系统中功率控制数据传输的发射功率抖动的缓解
公开(公告)号：WO2005114866A1
公开(公告)日：2005-12-01
申请号：PCT/US2005/013520
申请日：2005-04-19
申请人： QUALCOMM Incorporated , KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
发明人： KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
IPC分类号： H04B7/005
CPC分类号： H04W52/221 , H04W52/146 , H04W52/367
摘要： Techniques to mitigate spikes in transmit power, by reducing the magnitude and/or duration of the spikes, are described. Initially, power control is performed in a normal manner and in accordance with a transmit power control (TPC) scheme. If a (e.g., upward) transmit power spike is detected, the power control is performed in a manner to mitigate the adverse effects of the spike and in accordance with another TPC scheme. An upward transmit power spike may be detected, e.g., if a predetermined number of consecutive TPC commands in the upward direction is obtained for increasing transmit power. The upward transmit power spike may be mitigated by limiting the transmit power, reducing the rate of transmit power adjustment in the upward direction, delaying and/or filtering TPC decisions used for transmit power adjustment, preventing upward adjustment of transmit power, and so on. Multiple states may be defined and used to facilitate power control with spike mitigation.
摘要翻译：描述了通过减小尖峰的幅度和/或持续时间来减轻发射功率尖峰的技术。最初，按照发送功率控制（TPC）方式，以正常的方式进行功率控制。如果检测到（例如，向上）发射功率尖峰，则以减轻尖峰的不利影响并根据另一TPC方案的方式执行功率控制。可以检测向上的发送功率尖峰，例如，如果获得了向上方向上的预定数量的连续TPC命令以增加发射功率。通过限制发射功率，降低向上方向的发射功率调整速率，延迟和/或滤波用于发射功率调整的TPC决定，防止发射功率的向上调整等，可以减轻向上发射功率尖峰。多个状态可以被定义并用于通过尖峰减轻来促进功率控制。

34. 发明申请

WO2005039135A1 FREQUENCY ADJUSTMENT IN COMBINED MOBILE COMMUNICATION-POSITIONING DEVICE 审中-公开
标题翻译：组合移动通信定位装置中的频率调整
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
申请人： QUALCOMM INCORPORATED , SENDONARIS, Andrew , SHIU, Da-shan , FARMER, Dominick Gerard , LIN, Jeremy H. , SUBRAHMANYA, Parvathanathan , ROWLAND, Thomas K.
发明人： SENDONARIS, Andrew , SHIU, Da-shan , FARMER, Dominick Gerard , LIN, Jeremy H. , SUBRAHMANYA, Parvathanathan , ROWLAND, Thomas K.
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , G01S19/235 , H04B1/3805 , H04L2027/0077
摘要： 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.
摘要翻译：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。

35. 发明申请

WO2013043731A1 CHANNEL IMPULSE RESPONSE ESTIMATION FOR WIRELESS RECEIVER 审中-公开
标题翻译：无线接收机的通道响应估计
公开(公告)号：WO2013043731A1
公开(公告)日：2013-03-28
申请号：PCT/US2012/056125
申请日：2012-09-19
申请人： QUALCOMM INCORPORATED , MOTAMED, Mariam , GOROKHOV, Alexei, Yurievitch , MCCLOUD, Mike, L. , SUBRAHMANYA, Parvathanathan
发明人： MOTAMED, Mariam , GOROKHOV, Alexei, Yurievitch , MCCLOUD, Mike, L. , SUBRAHMANYA, Parvathanathan
IPC分类号： H04L5/00 , H04L25/02
CPC分类号： H04L5/0051 , H04L25/0212 , H04L25/0224
摘要： Estimating a channel impulse response (CIR) for a wireless transmission, for example a multimedia broadcast multicast services single frequency network (MBSFN) transmission, may be performed by a receiver of an wireless subframe, without requiring operational memory in excess of what is needed for CIR estimation of unicast signaling, while providing enhanced delay spread coverage. The wireless subframe may be a MBSFN subframe. The receiver may form an aggregate vector of pilot tones extracted from an OFDM reference symbol of an wireless subframe. The receiver may subsample the aggregate vector to obtain a plurality of sub-vectors each comprising a distinct subsampling phase. The receiver may process the plurality of sub-vectors using an inverse fast Fourier transform to obtain time domain representations of each of the sub-vectors. The receiver may combine the time domain representations in various ways to obtain a CIR estimate for the wireless subframe.
摘要翻译：估计用于无线传输的信道脉冲响应（CIR），例如多媒体广播多播服务单频网（MBSFN）传输，可以由无线子帧的接收机执行，而不需要超过所需的操作存储器 CIR估计单播信令，同时提供增强的延迟扩展覆盖。无线子帧可以是MBSFN子帧。接收机可以形成从无线子帧的OFDM参考符号提取的导频音的聚合向量。接收机可以对聚合向量进行子采样以获得每个包括不同子采样相位的多个子向量。接收机可以使用快速傅里叶逆变换处理多个子向量，以获得每个子向量的时域表示。接收机可以以各种方式组合时域表示以获得无线子帧的CIR估计。

36. 发明申请

WO2012139077A1 DYNAMIC ELECTROMAGNETIC RADIATION EMISSION CONTROL IN WIRELESS COMMUNICATION DEVICES 审中-公开
标题翻译：无线通信设备动态电磁辐射控制
公开(公告)号：WO2012139077A1
公开(公告)日：2012-10-11
申请号：PCT/US2012/032646
申请日：2012-04-06
申请人： QUALCOMM INCORPORATED , SUBRAHMANYA, Parvathanathan , KASTURI, Nitin
发明人： SUBRAHMANYA, Parvathanathan , KASTURI, Nitin
IPC分类号： H01Q1/24 , H04B1/38 , H04W52/36 , H04W52/28 , H04W52/24
CPC分类号： H01Q1/245 , H04B1/3838 , H04W52/247 , H04W52/283 , H04W52/288 , H04W52/367
摘要： Methods and apparatus for active and passive dynamic electromagnetic radiation emission control in wireless devices by limiting transmit power in individual devices is disclosed. In various embodiments, electromagnetic radiation emissions from wireless devices are dynamically controlled using variable transmit power limits acquired through the use of RF ID /NFC tags that indicate transmit power limits, where such power limiting tags are embedded in clothing, furniture, etc., communication of transmit power limits over Bluetooth or other short range technologies, location-based transmit power limits, user input transmit power limits. Controlling the transmit power of mobiles as well as femtocells/access points for the purpose of minimizing SAR using variable transmit power limits is detailed.
摘要翻译：公开了通过限制各个设备中的发射功率的无线设备中的主动和被动动态电磁辐射发射控制的方法和装置。在各种实施例中，使用通过使用指示发射功率限制的RF ID / NFC标签获得的可变发射功率限制来动态地控制来自无线设备的电磁辐射发射，其中这种功率限制标签嵌入在服装，家具等中，通信通过蓝牙或其他短距离技术的发射功率限制，基于位置的发射功率限制，用户输入发射功率限制。详细说明了控制移动台以及毫微微蜂窝/接入点的发射功率，以便尽可能减少SAR的发射功率。

37. 发明申请

WO2011106571A3 METHODS AND APPARATUS FOR ITERATIVE DECODING IN MULTIPLE-INPUT-MULTIPLE-OUTPUT (MIMO) COMMUNICATION SYSTEMS 审中-公开
标题翻译：用于多输入多输出（MIMO）通信系统中的迭代解码的方法和装置
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
申请人： 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.
发明人： CUI, Tao , TANG, Jia , SENDONARIS, Andrew , SALVEKAR, Atul, A. , RAO, Subramanya P.N. , SUBRAHMANYA, Parvathanathan , XIAO, Lei , MCCLOUD, Michael, L. , BANISTER, Brian, C.
IPC分类号： H04L1/06 , H04L25/03 , H04L1/00
摘要： 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.
摘要翻译：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。

38. 发明申请

WO2011103355A3 PROTOCOL STACK POWER OPTIMIZATION FOR WIRELESS COMMUNICATIONS DEVICES 审中-公开
公开(公告)号：WO2011103355A3
公开(公告)日：2011-08-25
申请号：PCT/US2011/025330
申请日：2011-02-17
申请人： QUALCOMM INCORPORATED , NAWARE, Vidyut M. , PATEL, Ketan N. , SY, Eugene T. , SUBRAHMANYA, Parvathanathan
发明人： NAWARE, Vidyut M. , PATEL, Ketan N. , SY, Eugene T. , SUBRAHMANYA, Parvathanathan
IPC分类号： H04W52/02
摘要： User experiences on wireless devices are affected by communication, computation, and user interface capabilities. Another key performance indicator of a wireless device is its battery life. A method, algorithm and apparatus for improving the communication, computation and user interface capabilities of a mobile device is disclosed, which requires the expenditure of less energy and increases battery life. The trade-off between battery life and user experience related to the communication capability is managed by a protocol stack power optimization algorithm that optimally allocates energy resources. The power management algorithm inputs and combines measurements made at various layers of the protocol stack to selectively control a set of actions impacting energy usage. The algorithm maps from a set of measurements to a set of actions that provides the best trade-off between user experience and energy consumption.

39. 发明申请

WO2011103355A2 PROTOCOL STACK POWER OPTIMIZATION FOR WIRELESS COMMUNICATIONS DEVICES 审中-公开
标题翻译：无线通信设备的协议栈功率优化
公开(公告)号：WO2011103355A2
公开(公告)日：2011-08-25
申请号：PCT/US2011025330
申请日：2011-02-17
申请人： QUALCOMM INC , NAWARE VIDYUT M , PATEL KETAN N , SY EUGENE T , SUBRAHMANYA PARVATHANATHAN
发明人： NAWARE VIDYUT M , PATEL KETAN N , SY EUGENE T , SUBRAHMANYA PARVATHANATHAN
IPC分类号： H04W52/02
CPC分类号： H04W52/0229 , H04W52/0238 , H04W52/0274 , H04W52/029 , H04W88/02 , Y02D70/00 , Y02D70/1242 , Y02D70/1244 , Y02D70/126 , Y02D70/23
摘要： User experiences on wireless devices are affected by communication, computation, and user interface capabilities. Another key performance indicator of a wireless device is its battery life. A method, algorithm and apparatus for improving the communication, computation and user interface capabilities of a mobile device is disclosed, which requires the expenditure of less energy and increases battery life. The trade-off between battery life and user experience related to the communication capability is managed by a protocol stack power optimization algorithm that optimally allocates energy resources. The power management algorithm inputs and combines measurements made at various layers of the protocol stack to selectively control a set of actions impacting energy usage. The algorithm maps from a set of measurements to a set of actions that provides the best trade-off between user experience and energy consumption.
摘要翻译：无线设备的用户体验受通信，计算和用户界面功能的影响。无线设备的另一个关键性能指标是其电池寿命。公开了一种用于改善移动设备的通信，计算和用户界面能力的方法，算法和装置，其需要较少的能量消耗并延长电池寿命。电池寿命与通信能力相关的用户体验之间的权衡由最优分配能源的协议栈功率优化算法进行管理。功率管理算法输入和组合在协议栈的各个层进行的测量，以选择性地控制影响能量使用的一组动作。该算法将一组测量映射到提供用户体验和能量消耗之间最佳权衡的一组动作。

40. 发明申请

WO2011053885A1 METHODS AND SYSTEMS FOR INTERFERENCE CANCELLATION IN MULTI-MODE COEXISTENCE MODEMS 审中-公开
标题翻译：用于多模式共存模式干扰消除的方法和系统
公开(公告)号：WO2011053885A1
公开(公告)日：2011-05-05
申请号：PCT/US2010/054886
申请日：2010-10-30
申请人： QUALCOMM INCORPORATED , NARASIMHA, Madihally J. , KIM, Je Woo , KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
发明人： NARASIMHA, Madihally J. , KIM, Je Woo , KASTURI, Nitin , SUBRAHMANYA, Parvathanathan
IPC分类号： H04B1/52 , H04B1/38 , H04B1/40
CPC分类号： H04B1/525 , G01S19/21 , H04B1/3805 , H04B1/406
摘要： Certain embodiments of the present disclosure support techniques for interference cancellation in a multi-mode wireless modem that supports coexistence of different radio technologies.
摘要翻译：本公开的某些实施例支持支持不同无线电技术共存的多模式无线调制解调器中的干扰消除技术。

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