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1. 发明申请

WO2007111742A3 APPARATUS AND METHODS FOR DETERMINING TIMING IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：用于确定通信系统中的时序的装置和方法
公开(公告)号：WO2007111742A3
公开(公告)日：2008-01-24
申请号：PCT/US2006062195
申请日：2006-12-15
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , WANG MICHAEL MAO , KRISHNAMOORTHI RAGHURAMAN
发明人： MUKKAVILLI KRISHNA KIRAN , WANG MICHAEL MAO , KRISHNAMOORTHI RAGHURAMAN
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L27/2662 , H04L25/0202 , H04L27/2686
摘要： Apparatus and methods for use in a wireless communication system are disclosed for determining a timing position for channel activity in order to resolve timing ambiguity. A disclosed apparatus includes a processor that determines when channel activity occurs in at least one of an early or a late arrival position in a communication channel estimate and unwraps the channel activity in either the early arrival position or the late arrival position to a corresponding late or early arrival unwrapped channel activity position in the wireless channel estimate. The processor correlates symbol data in the communication signal corresponding to both the channel activity and the unwrapped channel activity to symbol data of the main channel activity. The processor determines whether a correct timing position of the channel activity is one of the early or late arrival positions based on the correlations, thus resolving timing ambiguity. Complementary methods are also disclosed.
摘要翻译：公开了用于无线通信系统中的装置和方法，用于确定信道活动的定时位置，以便解决定时模糊。所公开的装置包括处理器，其确定在通信信道估计中的早期或迟到到达位置中的至少一个中何时发生信道活动，并且将早期到达位置或延迟到达位置中的信道活动解包到相应的延迟或在无线信道估计中提前到达解开的频道活动位置。处理器将对应于信道活动和解开的信道活动的通信信号中的符号数据与主信道活动的符号数据相关联。处理器基于相关性确定信道活动的正确定时位置是早期还是迟到位置之一，从而解决定时模糊度。还公开了互补方法。

2. 发明申请

WO2009120468A2 METHODS AND APPARATUS FOR ADAPTING CHANNEL ESTIMATION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中适应通道估计的方法和装置
公开(公告)号：WO2009120468A2
公开(公告)日：2009-10-01
申请号：PCT/US2009036081
申请日：2009-03-04
申请人： QUALCOMM INC , KRISHNAMOORTHI RAGHURAMAN , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK
发明人： KRISHNAMOORTHI RAGHURAMAN , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK
IPC分类号： H04L25/02
CPC分类号： H04L25/0202
摘要： Methods and apparatus for adapting a channel estimation scheme in a transceiver in a communication system are disclosed to adapt channel estimation to the transceiver environment, particularly for high Doppler environments. The disclosed methods and apparatus effect determination of an estimate of a power delay profile of a channel or a time correlation of the channel, or both. A channel estimation scheme is then determined based on at least one of the determined power delay profile and time correlation of the channel. By basing determination of a channel estimation scheme on the power delay profile and/or the time correlation of the channel, the channel estimation scheme is adapted to the particular environment of the transceiver by accounting for the delay spread of the channel and/or the speed of the transceiver.
摘要翻译：公开了用于在通信系统中的收发器中适配信道估计方案的方法和装置，以使信道估计适应收发机环境，特别是对于高多普勒环境。所公开的方法和装置效应确定信道的功率延迟分布的估计或信道的时间相关性，或两者。然后基于所确定的功率延迟分布和信道的时间相关性中的至少一个来确定信道估计方案。通过基于信道估计方案对功率延迟分布的确定和/或信道的时间相关性，信道估计方案通过考虑信道的延迟扩展和/或速度来适应收发器的特定环境的收发器。

3. 发明申请

WO2009015399A3 SYSTEMS AND METHODS FOR GENERALIZED SLOT-TO-INTERLACE MAPPING 审中-公开
标题翻译：用于广义槽到交织映射的系统和方法
公开(公告)号：WO2009015399A3
公开(公告)日：2009-07-02
申请号：PCT/US2008072372
申请日：2008-08-06
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , KRISHNAMOORTHI RAGHURAMAN , VIJAYAN RAJIV
发明人： MUKKAVILLI KRISHNA KIRAN , KRISHNAMOORTHI RAGHURAMAN , VIJAYAN RAJIV
IPC分类号： H04L27/26 , H04L5/00 , H04L5/02 , H04W72/12
CPC分类号： H04L5/0048 , H04L5/0007 , H04L5/0044 , H04L5/0064 , H04L5/0083 , H04L25/0226
摘要： A transmitter or receiver device includes a processing system configured to have one or more pilot interlace vectors and one or more distance vectors. The processing system is further configured to generate a first slot interlace for a first slot based on the one or more pilot interlace vectors, and is further configured to generate a second slot interlace for a second slot based on the first slot interlace and the one or more distance vectors. Additional slot interlaces for all other slots may also be generated based on the first slot interlace and the one or more distance vectors.
摘要翻译：发射机或接收机设备包括配置成具有一个或多个导频交织矢量和一个或多个距离矢量的处理系统。所述处理系统进一步经配置以基于所述一个或一个以上导频交错向量产生用于第一时隙的第一时隙交错，且进一步经配置以基于所述第一时隙交错及所述一者或两者而产生用于第二时隙的第二时隙交错，或者更多的距离矢量。所有其他时隙的附加时隙交织也可基于第一时隙交织和一个或多个距离矢量来生成。

4. 发明申请

WO2008086204A3 METHODS AND APPARATUS FOR TIMING SYNCHRONIZATION BASED ON TRANSITIONAL PILOT SYMBOLS 审中-公开
标题翻译：基于过渡引导符号的时序同步的方法与装置
公开(公告)号：WO2008086204A3
公开(公告)日：2009-02-12
申请号：PCT/US2008050271
申请日：2008-01-04
申请人： QUALCOMM INC , VRCELJ BOJAN , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN
发明人： VRCELJ BOJAN , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN
IPC分类号： H04L25/02 , H04L27/26
CPC分类号： H04L27/2662 , H04L5/0048 , H04L7/08 , H04L25/0216 , H04L25/023 , H04L27/2613 , H04L27/2675 , H04L27/2695
摘要： Methods and apparatus for timing synchronization based on transitional pilot symbols. In an aspect, a method is provided for time tracking synchronization in an OFDM system. The method includes receiving at least one TDM pilot symbol comprising a plurality of modulated sub-carriers that are configured to provide a channel estimate having a length that extends up to a duration of an FFT used for data transmission. The method also includes determining one or both of an instantaneous and averaged channel estimates from the plurality of modulated sub-carriers, and calculating a timing offset based on one or both of the channel estimates. An apparatus includes a receiver configured to receive the at least one TDM pilot symbol, a channel estimator configured to determine the instantaneous and averaged channel estimates, and a time synchronizer configured to calculate a timing offset based on the channel estimates.
摘要翻译：基于过渡导频符号的定时同步的方法和装置。在一方面，提供了一种用于OFDM系统中的时间跟踪同步的方法。该方法包括：接收至少一个TDM导频符号，该TDM导频符号包括多个经调制的子载波，其被配置为提供具有延伸到用于数据传输的FFT的持续时间的长度的信道估计。该方法还包括确定来自多个调制子载波的瞬时和平均信道估计中的一个或两个，以及基于信道估计中的一个或两个来计算定时偏移。一种装置包括被配置为接收所述至少一个TDM导频符号的接收机，被配置为确定瞬时和平均信道估计的信道估计器，以及被配置为基于信道估计来计算定时偏移的时间同步器。

5. 发明申请

WO2009120809A3 DETECTION OF SYMBOLS OF A SIGNALLING PARAMETERS CHANNEL IN A MULTICARRIER RECEIVER 审中-公开
标题翻译：在多功能接收机中检测信号参数信道的符号
公开(公告)号：WO2009120809A3
公开(公告)日：2010-03-11
申请号：PCT/US2009038305
申请日：2009-03-25
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , VAN VEEN DURK L , CHARI MURALI RAMASWAMY , KRISHNAMOORTHI RAGHURAMAN , KRISHNAMURTHI RAJEEV , LING FUYUN
发明人： MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , VAN VEEN DURK L , CHARI MURALI RAMASWAMY , KRISHNAMOORTHI RAGHURAMAN , KRISHNAMURTHI RAJEEV , LING FUYUN
IPC分类号： H04L23/02 , H04L5/00 , H04L25/02 , H04L27/26
CPC分类号： H04L23/02 , H04L5/0053 , H04L25/0206 , H04L25/0218 , H04L25/023 , H04L27/2613 , H04L27/2647
摘要： Signal parameter information is derived by: a) collecting time-domain samples (y(n)) of a signal parameter channel; b) performing an FFT to obtain corresponding frequency domain samples (Y (k)); c) selecting one possible parameter (i) and descrambling the frequency domain samples; d) extrapolating to extendthe result to 512 samples; e) performing a 512 point FFT to obtain a time domain channel estimation (hi (n) ) corresponding to the selected parameter f) computing the sum of energies (Ei) of the channel taps which exceed a selected threshold; g) repeating c) to f) for the other possible parameters; h) determining the parameter which has the maximum value of Ei.
摘要翻译：信号参数信息通过以下方式得出：a）收集信号参数信道的时域样本（y（n））; b）执行FFT以获得对应的频域采样（Y（k））; c）选择一个可能的参数（i）并解扰频域采样; d）外推，将结果扩展到512个样本; e）执行512点FFT以获得对应于所选参数的时域信道估计（hi（n））f）计算超过选定阈值的信道抽头的能量之和（Ei）; g）重复c）到f）其他可能的参数; h）确定具有最大值Ei的参数。

6. 发明申请

WO2009015332A3 METHOD AND APPARATUS FOR SENSING SIGNALLING PARAMETERS IN A WIRELESS COMMUNICATIONS NETWORK 审中-公开
标题翻译：用于无线通信网络中传感信号参数的方法与装置
公开(公告)号：WO2009015332A3
公开(公告)日：2009-08-20
申请号：PCT/US2008071182
申请日：2008-07-25
申请人： QUALCOMM INC , VAN VEEN DURK L , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , MUKKAVILLI KRISHNA KIRAN , LING FUYUN
发明人： VAN VEEN DURK L , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , MUKKAVILLI KRISHNA KIRAN , LING FUYUN
IPC分类号： H04L27/26 , H04L5/00 , H04W28/18
CPC分类号： H04L27/2613 , H04L5/0007 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04L5/008 , H04L5/0094 , H04L27/2607 , H04L27/2626 , H04L27/2628 , H04L27/2647 , H04L27/2656
摘要： A new channel is added to FLO networks that carries embedded signaling parameter information. The design is such that regardless of the actual values of the signaling parameters conveyed, a receiver will be able to demodulate this new channel. Moreover, the addition of the new channel does not render a FLO network that has been so configured to not be backwards-compatible with existing devices.
摘要翻译：一个新的信道被添加到携带嵌入式信令参数信息的FLO网络中。这种设计使得无论传达的信令参数的实际值如何，接收机将能够解调这个新的信道。此外，添加新频道并不会使FLO网络被配置为不与现有设备向后兼容。

7. 发明申请

WO2009015354A3 METHODS AND APPARATUS FOR TRANSMITTER IDENTIFICATION IN A WIRELESS NETWORK 审中-公开
标题翻译：在无线网络中用于发射机识别的方法和设备
公开(公告)号：WO2009015354A3
公开(公告)日：2009-06-18
申请号：PCT/US2008071227
申请日：2008-07-25
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY
发明人： MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY
IPC分类号： H04L25/20 , H04L1/00 , H04L27/26 , H04W28/12 , H04W48/16 , H04W84/18 , H04W88/04
CPC分类号： H04L23/02 , H03M13/09 , H03M13/136 , H03M13/17 , H03M13/2707 , H03M13/2906 , H03M13/293 , H03M13/356 , H03M13/6356 , H03M13/6362 , H04L1/0057 , H04L1/0071 , H04L5/0037 , H04L5/0048 , H04L5/0053 , H04L25/0224 , H04L25/067 , H04W48/12 , H04W52/241 , H04W88/04
摘要： Methods and apparatus for transmitter identification in a wireless network are disclosed. In an example, a method is provided that encodes pilot information on a first portion of a number of subcarriers in a symbol within a pilot positioning channel for an active transmitter. The method further includes encoding transmitter identification information on a second dedicated portion of the number of subcarriers of the symbol. The method also encompasses including a transmitter allocation field that signals the number of succeeding symbols that will be used by the transmitter for transmitting any other information in an interference free manner. In another example, a method is provided that receives a symbol having a number of subcarriers from a transmitter. A channel estimate and an energy measurement of the symbol using a first portion of the subcarriers. A dedicated second portion of the number of subcarriers in the symbol are then decoded to determine the transmitter identification information.
摘要翻译：公开了用于无线网络中的发射器识别的方法和设备。在一个示例中，提供了一种在用于活动发射机的导频定位信道内的符号中的多个子载波的第一部分上对导频信息进行编码的方法。该方法还包括在符号的多个子载波的第二专用部分上编码发射器识别信息。该方法还包括包含发射机分配字段，该发射机分配字段用信号发送将由发射机用于以无干扰方式发送任何其他信息的后续符号的数目。在另一个示例中，提供了一种从发射机接收具有多个子载波的符号的方法。使用第一部分子载波的符号的信道估计和能量测量。然后对符号中的多个子载波的专用第二部分进行解码以确定发射机识别信息。

8. 发明申请

WO2009015340A3 METHOD AND APPARATUS FOR INITIAL ACQUISITION OF SIGNALING PARAMETERS FOR A WIRELESS COMMUNICATIONS NETWORK 审中-公开
标题翻译：用于无线通信网络的信号参数初始采集的方法和装置
公开(公告)号：WO2009015340A3
公开(公告)日：2009-04-16
申请号：PCT/US2008071204
申请日：2008-07-25
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , TIAN TAO
发明人： MUKKAVILLI KRISHNA KIRAN , MANTRAVADI ASHOK , KRISHNAMOORTHI RAGHURAMAN , CHARI MURALI RAMASWAMY , TIAN TAO
IPC分类号： H04W48/18 , H04L27/26
CPC分类号： H04W48/16 , H04L27/2647
摘要： A method of acquiring a forward link only (FLO) network in a radio frequency (RF) in a wireless communication environment, includes selecting a RF from a first list; selecting a signal parameter (SP) from a second list; determining if a first parameter is found using the selected RF and SP; and, upon determination that the first parameter is found, enabling the use of the selected RF and SP to communicate in the FLO network. An apparatus for implementing the method is also disclosed.
摘要翻译：一种在无线通信环境中在射频（RF）中获取前向链路（FLO）网络的方法，包括从第一列表中选择RF; 从第二列表中选择信号参数（SP）; 使用所选择的RF和SP确定是否发现第一参数; 并且在确定发现第一参数之后，使所选择的RF和SP能够在FLO网络中进行通信。还公开了一种用于实现该方法的装置。

9. 发明申请

WO2008083303A3 METHODS AND APPARATUSES FOR REDUCING INTER-CARRIER INTERFERENCE IN AN OFDM SYSTEM 审中-公开
标题翻译：用于减少OFDM系统中的载波间干扰的方法和装置
公开(公告)号：WO2008083303A3
公开(公告)日：2008-09-12
申请号：PCT/US2007089086
申请日：2007-12-28
申请人： QUALCOMM INC , TIAN TAO , KRISHNAMOORTHI RAGHURAMAN , MUKKAVILLI KRISHNA KIRAN , LING FUYUN
发明人： TIAN TAO , KRISHNAMOORTHI RAGHURAMAN , MUKKAVILLI KRISHNA KIRAN , LING FUYUN
IPC分类号： H04L27/26 , H04B1/10
CPC分类号： H04L27/2657
摘要： An OFDM telecommunications system includes a transmitter and a receiver. The receiver includes a canceller configured to reduce inter-carrier interference (ICI) in an OFDM symbol in the frequency domain.
摘要翻译： OFDM电信系统包括发射机和接收机。接收机包括被配置为减少频域中的OFDM符号中的载波间干扰（ICI）的消除器。

10. 发明申请

WO2012027400A3 DETERMINATION OF PARITY-CHECK MATRICES SUITABLE FOR ITERATIVE DECODING OF LINEAR BLOCK CODES 审中-公开
标题翻译：确定适用于线性块编码迭代解码的奇偶校验矩阵
公开(公告)号：WO2012027400A3
公开(公告)日：2012-04-19
申请号：PCT/US2011048853
申请日：2011-08-23
申请人： QUALCOMM INC , JIANG JING , TIAN TAO , KRISHNAMOORTHI RAGHURAMAN , ZHANG XINMIAO , MANTRAVADI ASHOK , MUKKAVILLI KRISHNA K
发明人： JIANG JING , TIAN TAO , KRISHNAMOORTHI RAGHURAMAN , ZHANG XINMIAO , MANTRAVADI ASHOK , MUKKAVILLI KRISHNA K
IPC分类号： H03M13/11 , H03M13/15
CPC分类号： H03M13/1111 , H03M13/1191 , H03M13/1515 , H03M13/2966 , H03M13/616 , H04L1/005 , H04L1/0057
摘要： A method of generating a parity check matrix for iterative decoding of a linear block code includes: determining a set of parity check vectors for the linear block code; ordering according to Hamming weight non-zero parity check vectors of the set; selecting a criterion for generating the parity check matrix; and building the parity check matrix by incrementally selecting according to the criterion a parity check vector for each consecutive row of the parity check matrix, wherein the parity check vector is selected from the ordered non-zero parity check vectors remaining in the set.
摘要翻译：一种生成用于线性块码的迭代解码的奇偶校验矩阵的方法包括：确定用于线性块码的一组奇偶校验向量; 根据汉明重量非零奇偶校验向量进行排序; 选择用于生成奇偶校验矩阵的标准; 以及通过根据所述标准逐渐选择所述奇偶校验矩阵的每个连续行的奇偶校验向量来构建所述奇偶校验矩阵，其中所述奇偶校验向量是从所述组中剩余的有序非零奇偶校验向量中选择的。

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