公开(公告)号：WO2010141791A3

公开(公告)日：2011-04-21

申请号：PCT/US2010037343

申请日：2010-06-04

Applicant: QUALCOMM INC ,  SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH

Inventor： SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH

IPC: H04L25/02 ,  H04L25/03

CPC classification number: H04L25/03019 ,  H04L25/0228

Abstract: A method for suppressing interference in a wireless communication comprises receiving a burst of symbols, filtering the burst of symbols using an interference suppression filter with a first plurality of weights, decoding the filtered burst of symbols to generate data corresponding to the burst of symbols, encoding the data to generate a re-encoded burst of symbols, calculating a second plurality of weights for the interference suppression filter based upon the re-encoded burst of symbols, filtering the re-encoded burst of symbols using the interference suppression filter with the second plurality of weights, and decoding the filtered re-encoded burst of symbols.

Abstract translation: 一种用于抑制无线通信中的干扰的方法包括：接收符号脉冲串，使用具有第一多个权重的干扰抑制滤波器对符号突发进行滤波，解码经过滤波的符号突发，以产生与符号突发相对应的数据，编码 所述数据用于生成重新编码的码元突发，基于重新编码的符号突发计算干扰抑制滤波器的第二多个权重，使用具有第二多个干扰抑制滤波器对重新编码的码元突发进行滤波 并对经滤波的重新编码的符号突发进行解码。

公开(公告)号：WO2010127049A2

公开(公告)日：2010-11-04

申请号：PCT/US2010032858

申请日：2010-04-28

Applicant: QUALCOMM INC ,  SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH ,  DE LAURENTIIS NICO

Inventor： SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH ,  DE LAURENTIIS NICO

IPC: H04B1/10 ,  H04B15/00

CPC classification number: H04L25/03292 ,  H04L2025/03426

Abstract: Systems and methods of receiving data in a communication system are disclosed. The methods include equalizing a plurality of samples to suppress intersymbol interference and provide a first set of detected bits based on a first set of reference bits comprising a training sequence on a first iteration. The methods further include suppressing co-channel interference in the plurality of input samples and provide a set of suppressed samples based on a second set of reference bits comprising the first set of detected bits on a second iteration. The methods further include equalizing the set of suppressed samples to suppress intersymbol interference and provide a second set of detected bits based on the second set of reference bits on the second iteration.

Abstract translation: 公开了在通信系统中接收数据的系统和方法。 所述方法包括均衡多个采样以抑制符号间干扰，并且基于在第一次迭代中包括训练序列的第一组参考比特来提供第一组检测到的比特。 所述方法还包括抑制多个输入样本中的同信道干扰，并且在第二次迭代中基于包括第一组检测到的比特的第二组参考比特提供一组抑制样本。 所述方法还包括均衡所述抑制样本集合以抑制符号间干扰，并且基于所述第二迭代上的第二组参考比特提供第二组检测到的比特。

公开(公告)号：WO2009140338A3

公开(公告)日：2010-05-06

申请号：PCT/US2009043718

申请日：2009-05-13

Applicant: QUALCOMM INC ,  SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH ,  YAN MING ,  DE LAURENTIIS NICO

Inventor： SIKRI DIVAYDEEP ,  ABRISHAMKAR FARROKH ,  YAN MING ,  DE LAURENTIIS NICO

IPC: H04B7/01 ,  H04L7/00 ,  H04W56/00

CPC classification number: H04W56/00 ,  H04B7/02

Abstract: A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols, iteratively adjusting the subset of the burst of symbols by a plurality of timing offsets and calculating, for each timing offset, a first performance metric corresponding to the adjusted subset. The method further comprises the steps of determining one of the plurality of timing offsets to be a preferred timing offset based upon the first performance metric thereof, iteratively rotating the subset of the burst of symbols by a plurality of frequency offsets and calculating, for each frequency offset, a second performance metric corresponding to the rotated subset, and determining one of the plurality of frequency offsets to be a preferred frequency offset based upon the second performance metric thereof.

Abstract translation: 提供了一种用于无线系统中的定时和频率同步的方法。 该方法包括以下步骤：接收符号脉冲串，选择符号脉冲串的子集，通过多个定时偏移迭代地调整符号脉冲串的子集，并且针对每个定时偏移量计算对应于 调整后的子集。 该方法还包括以下步骤：基于其第一性能度量，将多个定时偏移中的一个定时偏移确定为优选的定时偏移，将符号突发的子集迭代地旋转多个频率偏移，并且针对每个频率 偏移量，对应于旋转的子集的第二性能量度，以及基于其第二性能度量，将所述多个频率偏移中的一个确定为优选频率偏移。

公开(公告)号：WO2011028978A3

公开(公告)日：2011-04-28

申请号：PCT/US2010047775

申请日：2010-09-03

Applicant: QUALCOMM INC ,  ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP ,  CHALLA RAGHU N ,  CANPOLAT BAHADIR

Inventor： ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP ,  CHALLA RAGHU N ,  CANPOLAT BAHADIR

IPC: H04L25/03 ,  H04L25/02

CPC classification number: H04L25/0328 ,  H04L25/0202 ,  H04L25/03286 ,  H04L25/03292 ,  H04L25/03299 ,  H04L2025/03726

Abstract: A multi-stage interference suppression receiver includes a short equalizer section configured to operate on a first portion of a received signal received over a channel to produce a first equalized signal and a first estimate of the channel, a channel estimator section configured to operate on the first equalized signal to produce a second equalized signal, the channel estimator section comprising a linear estimator and a non-linear estimator, a long equalizer section configured to operate on a second portion of the received signal to produce a first estimate of symbols in the received signal and a second estimate of the channel and an interference canceller section configured to operate on the first estimate of symbols in the received signal to generate a second estimate of symbols in the received signal based on, at least in part, the second estimate of the channel.

Abstract translation: 一种多级干扰抑制接收机，包括：短均衡器部分，被配置为对通过信道接收的接收信号的第一部分进行操作以产生第一均衡信号和信道的第一估计;信道估计器部分，被配置为对 第一均衡信号以产生第二均衡信号，信道估计器部分包括线性估计器和非线性估计器;长均衡器部分，被配置为对接收信号的第二部分进行操作以产生接收到的符号的第一估计 信号和信道的第二估计，以及干扰消除器部分，被配置为对接收信号中的符号的第一估计进行操作，以至少部分地基于第二估计来生成接收信号中的符号的第二估计 渠道。

公开(公告)号：WO2009108586A3

公开(公告)日：2009-12-03

申请号：PCT/US2009034794

申请日：2009-02-20

Applicant: QUALCOMM INC ,  ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP

Inventor： ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP

IPC: H04L7/04 ,  H04L25/02

CPC classification number: H04L7/042 ,  H04L7/048 ,  H04L25/0228

Abstract: A method for midamble estimation comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols that comprises a first midamble symbol, calculating, for each symbol in the subset, a corresponding midamble estimation error, and determining the lowest calculated midamble estimation error to locate the first midamble symbol. A receiver comprises an antenna configured to receive a burst of symbols, a timing estimator configured to select a subset of the burst of symbols that comprises a first midamble symbol, a midamble estimator configured to calculate, for each symbol in the subset, a corresponding midamble estimation error, and a processor configured to select the symbol in the subset corresponding to a lowest calculated midamble estimation error as the first midamble symbol.

Abstract translation: 一种中同步码估计方法，包括以下步骤：接收符号突发;选择包括第一中间码符号的符号突发的子集;针对该子集中的每个符号计算相应的中间码估计误差;以及确定计算出的最低 中间码估计错误以定位第一中间码符号。 接收机包括：天线，被配置为接收符号突发;定时估计器，被配置为选择包括第一中间码符号的符号突发的子集;中间码估计器，被配置为针对该子集中的每个码元计算对应的中间码 估计误差;以及处理器，被配置为选择对应于最低计算的中间训练码估计误差的子集中的码元作为第一中间码符号。

公开(公告)号：WO2011028982A3

公开(公告)日：2011-04-28

申请号：PCT/US2010047781

申请日：2010-09-03

Applicant: QUALCOMM INC ,  CANPOLAT BAHADIR ,  ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP

Inventor： CANPOLAT BAHADIR ,  ABRISHAMKAR FARROKH ,  SIKRI DIVAYDEEP

IPC: H04L25/03

CPC classification number: H04L25/03178 ,  H04L25/0328

Abstract: A novel symbol estimation method produces intersymbol interference free symbols by detecting interfering symbols in an interfering channel. A channel estimate is refined for additional improvements. The method can lends itself as a serial or parallel algorithm implementation. The symbol estimation method includes using an initial estimate of received symbols and calculating a refined estimate of the received symbols using a channel estimate. The refined estimate is calculated by performing parameterization of intersymbol interference by symbols other than the symbol being refined and selecting a refined value for the symbol being refined by evaluating an optimization function. Symbol estimates are refined in multiple iterations, until a pre-determined iteration termination criterion is met. Parameterization of ISI contribution of other symbols results in reduced computation by reducing total number of unknown variables in the refinement operation.

Abstract translation: 一种新颖的符号估计方法通过检测干扰信道中的干扰符号来产生符号间无干扰符号。 信道估计值可以进一步改进。 该方法可以作为串行或并行算法实现。 符号估计方法包括使用接收到的符号的初始估计并且使用信道估计来计算所接收的符号的精炼估计。 精化估计是通过用符号以外的符号对符号间干扰进行参数化来计算的，并且通过评估优化函数为正在精化的符号选择精确值。 符号估计在多次迭代中被完善，直到符合预先确定的迭代终止标准。 通过减少细化操作中的未知变量的总数，其他符号的ISI贡献的参数化导致减少的计算。

公开(公告)号：WO2012092149A3

公开(公告)日：2012-10-04

申请号：PCT/US2011066970

申请日：2011-12-22

Applicant: QUALCOMM INC ,  SIKRI DIVAYDEEP ,  RAFIQUE HASSAN ,  ALTAN CETIN

Inventor： SIKRI DIVAYDEEP ,  RAFIQUE HASSAN ,  ALTAN CETIN

IPC: H04L27/22

CPC classification number: H04L27/22 ,  H04L1/20 ,  H04L2027/0065 ,  H04L2027/0091 ,  H04L2027/0095

Abstract: Estimating an unknown frequency error of a tone signal comprises sampling (1704), within an error bandwidth, wireless signals including the tone signal that occupy the error bandwidth to generate signal samples, and repeatedly (1720), for different frequency offsets: applying a frequency offset to the signal samples to produce offset values that represent the signals occupying an offset bandwidth equal to the error bandwidth offset by an offset frequency (1708); estimating, within a frequency estimation range less than the error bandwidth, a tone frequency error using the offset values (1712); and measuring a signal - to - noise ratio of the tone signal using the signal samples and the estimated tone frequency error (1716). When a particular frequency offset results in a particular estimated tone frequency error and a measured signal - to - noise ratio that is above a threshold, that particular estimated tone frequency error is determined to be equal to the unknown frequency error of the tone signal (1724).

Abstract translation: 估计音调信号的未知频率误差包括在误差带宽内采样（1704）包括占据误差带宽的音调信号以产生信号样本的无线信号，并针对不同的频率偏移重复（1720）：应用频率 偏移到信号样本以产生表示占据偏移频带等于误差带宽偏移的偏移带宽的信号的偏移值（1708）; 在小于误差带宽的频率估计范围内，使用偏移值（1712）估计音调频率误差; 以及使用信号样本和估计的音调频率误差来测量音调信号的信噪比（1716）。 当特定频率偏移导致特定估计音频误差和高于阈值的测量信噪比时，该特定估计音频误差被确定为等于音调信号的未知频率误差（1724 ）。

公开(公告)号：WO2014189803A3

公开(公告)日：2015-02-26

申请号：PCT/US2014038523

申请日：2014-05-17

Applicant: QUALCOMM INC

Inventor： DHANDA MUNGAL SINGH ,  YU ZHI-ZHONG ,  SIKRI DIVAYDEEP

IPC: H04W72/04

CPC classification number: H04W72/048 ,  H04L5/12 ,  H04W8/183 ,  H04W36/00 ,  H04W36/06 ,  H04W88/02

Abstract: Methods are provided that optimize Voice over Adaptive Multi-user channels on One Slot (VAMOS) communications by recognizing that up to four independent communications are located on the same device, and assigning them to sub-channels of the same VAMOS channel. A VAMOS-capable multi-SIM wireless device such as a dual-SIM dual active (DSDA) device may have up to four simultaneous active calls on the same access network. When assigned to the same VAMOS channel, the up to four active calls may be merged to all use the same radio on the device.

Abstract translation: 提供了通过识别最多四个独立通信位于同一设备上并将其分配给相同VAMOS通道的子通道的方法来在一个时隙（VAMOS）通信上优化自适应多用户信道上的语音。 具有VAMOS能力的多SIM无线设备（例如双SIM双主动（DSDA））设备在同一接入网络上可能具有多达四个同时的主动呼叫。 当分配给相同的VAMOS通道时，最多可以合并四个活动呼叫，以使设备上的所有广播都使用。

公开(公告)号：WO2014150592A3

公开(公告)日：2014-12-11

申请号：PCT/US2014023720

申请日：2014-03-11

Applicant: QUALCOMM INC

Inventor： DHANDA MUNGAL ,  SIKRI DIVAYDEEP

IPC: H04W68/02 ,  H04W8/00 ,  H04W68/12 ,  H04W88/06

CPC classification number: H04W40/02 ,  H04W8/183 ,  H04W68/02 ,  H04W68/12 ,  H04W88/06 ,  Y02D70/00 ,  Y02D70/1226 ,  Y02D70/142 ,  Y02D70/30

Abstract: A method is provided for conserving power on a wireless communication device having multi-subscription capabilities. Instead of scanning different paging channels for each of a plurality of subscriptions, power may be conserved by using a single paging channel from a serving access network for all paging messages from the plurality of subscriptions. The wireless communication device may provide a serving access network information for the plurality of subscriptions, where each of the plurality of subscriptions is associated with a different paging channel. The serving access network may select or obtain a single paging channel for all paging messages from different core networks associated with the plurality of subscriptions. The wireless communication device may be informed of the selected paging channel by the access network so it monitors for paging messages for all subscriptions on that selected paging channel only.

Abstract translation: 提供了一种用于在具有多订阅能力的无线通信设备上节省功率的方法。 代替为多个订阅中的每一个扫描不同的寻呼信道，可以通过对来自多个订阅的所有寻呼消息使用来自服务接入网络的单个寻呼信道来节省功率。 无线通信设备可以为多个订阅提供服务接入网络信息，其中多个订阅中的每一个与不同的寻呼信道相关联。 服务接入网络可以从与多个订阅相关联的不同核心网络的所有寻呼消息中选择或获得单个寻呼信道。 无线通信设备可以由接入网络通知所选择的寻呼信道，因此它仅监视所选择的寻呼信道上的所有订阅的寻呼消息。

公开(公告)号：WO2014153565A2

公开(公告)日：2014-09-25

申请号：PCT/US2014032052

申请日：2014-03-27

Applicant: QUALCOMM INC

Inventor： LOU HUANG ,  NGAI FRANCIS MING-MENG ,  LI WENJUN ,  MCCLOUD MICHAEL ,  MAHAJAN AMIT ,  CHIZGI NATE ,  ATTAR RASHID ,  PANCHAL GIRISHKUMAR ,  HU JUN ,  AKULA PRASHANTH ,  MAKH VANSH PAL SINGH ,  JOOTAR JITTRA ,  SIKRI DIVAYDEEP ,  DHANDA MUNGAL ,  DEDE ERDOGAN ,  GOTTIMUKKALA NARENDRA VARMA ,  LI YINGBO ,  HUANG TSAI-CHEN

CPC classification number: H04B1/12 ,  H04B1/1027 ,  H04B1/525 ,  H04B15/04 ,  H04W16/14 ,  H04W88/06

Abstract: The various embodiments include a dual-SIM-dual-active (DSDA)device and methods for implementing robust transmit (Tx) processing to resolve radio frequency coexistence interference between two subscriptions operating on the DSDA device. The DSDA device may detect when one subscription (the "aggressor") de-senses the other subscription (the "victim") as a result of the aggressor's transmissions, and in response, implement robust Tx processing to mitigate the effects of de-sense on the victim.

Abstract translation: 各种实施例包括双SIM双重（DSDA）设备和用于实现鲁棒发射（Tx）处理以解决在DSDA设备上操作的两个订阅之间的射频共存干扰的方法。 作为攻击者发送的结果，DSDA设备可以检测何时一个订阅（“侵略者”）解除另一个订阅（“受害者”），并且作为响应，实现鲁棒的Tx处理以减轻去感觉的影响 对受害者