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11. 发明申请

WO2006110455A3 ADAPTIVE TIME-FILTERING FOR CHANNEL ESTIMATION IN OFDM SYSTEM 审中-公开
标题翻译： OFDM系统中信道估计的自适应时间滤波
公开(公告)号：WO2006110455A3
公开(公告)日：2007-01-11
申请号：PCT/US2006012843
申请日：2006-04-07
申请人： QUALCOMM INC , LI LINBO , MANTRAVADI ASHOK , LING FUYUN , MUKKAVILLI KRISHNA KIRAN
发明人： LI LINBO , MANTRAVADI ASHOK , LING FUYUN , MUKKAVILLI KRISHNA KIRAN
IPC分类号： H04L25/02
CPC分类号： H04L25/0232 , H04L25/022
摘要： Time filtering channel estimates in a wireless communication system, such as an Orthogonal Frequency Division Multiplex (OFDM) system, can be used to improve the quality of channel estimates. The characteristics of an optimal channel estimate time filter can depend on the manner in which the channel estimate is determined as well as the time correlation of channel estimates. A receiver can implement an adaptive time filter for channel estimates in which the time filter response can vary based on channel estimate parameters. The channel estimate parameters can include the manner of determining channel estimates, a time correlation of channel estimates, and an estimated Doppler frequency. The time filter response can be varied continuously over a range of responses or can be varied discretely over a predetermined number of time filter responses.
摘要翻译：在诸如正交频分复用（OFDM）系统的无线通信系统中的时间滤波信道估计可以用于提高信道估计的质量。最优信道估计时间滤波器的特征可以取决于信道估计的方式以及信道估计的时间相关性。接收机可以实现用于信道估计的自适应时间滤波器，其中时间滤波器响应可以基于信道估计参数而变化。信道估计参数可以包括确定信道估计的方式，信道估计的时间相关性和估计的多普勒频率。时间滤波器响应可以在响应范围内连续变化，或者可以在预定数量的时间滤波器响应上离散变化。

12. 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。

13. 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。

14. 发明申请

WO2007114963A3 METHODS AND APPARATUS FOR NOISE ESTIMATION IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：通信系统中噪声估计的方法和装置
公开(公告)号：WO2007114963A3
公开(公告)日：2008-01-03
申请号：PCT/US2007060062
申请日：2007-01-03
申请人： QUALCOMM INC , LING FUYUN , MUKKAVILLI KRISHNA KIRAN , WALKER KENT G
发明人： LING FUYUN , MUKKAVILLI KRISHNA KIRAN , WALKER KENT G
IPC分类号： H04L1/20 , H04L27/26
CPC分类号： H04L1/20 , H04L27/2602 , H04L27/2647
摘要： Methods and apparatus for noise estimation in a communication system. In an aspect, a method for noise and interference estimation is provided. The method includes identifying one or more unmodulated subcarriers in a received waveform, processing the one or more unmodulated subcarriers to produce a demodulated output, and determining a noise variance based on the demodulated output. In another aspect, an apparatus for providing a noise and interference estimation is provided. The apparatus includes selection logic configured to identify one or more unmodulated subcarriers in a received waveform, a processor configured to demodulate the one or more unmodulated subcarriers to produce a demodulated output, and variance determination logic configured to determine a noise variance based on the demodulated output.
摘要翻译：通信系统中噪声估计的方法和装置。在一方面，提供了一种用于噪声和干扰估计的方法。该方法包括识别接收波形中的一个或多个未调制副载波，处理一个或多个未调制副载波以产生解调输出，以及基于解调输出确定噪声方差。另一方面，提供了一种用于提供噪声和干扰估计的装置。所述设备包括被配置为识别接收波形中的一个或多个未调制子载波的选择逻辑，被配置为对所述一个或多个未调制子载波进行解调以产生解调输出的处理器，以及配置为基于解调输出来确定噪声方差的方差确定逻辑。

15. 发明申请

WO2010002520A1 METHOD AND APPARATUS FOR ADAPTIVE TIMING SYNCHRONIZATION IN A COMMUNICATION NETWORK 审中-公开
标题翻译：用于通信网络中自适应时序同步的方法和装置
公开(公告)号：WO2010002520A1
公开(公告)日：2010-01-07
申请号：PCT/US2009045161
申请日：2009-05-26
申请人： QUALCOMM INC , VRCELJ BOJAN , MUKKAVILLI KRISHNA KIRAN
发明人： VRCELJ BOJAN , MUKKAVILLI KRISHNA KIRAN
IPC分类号： H04L27/26 , H04L25/02
CPC分类号： H04L25/0212 , H04L27/2662 , H04L27/2665
摘要： An adaptive timing synchronization process (100) dynamically adapts timing synchronization parameters for both wide and local area channels based on channel estimates. Timing synchronization parameters are dynamically adapted according to C/I estimates calculated from WID/LID energies. The timing synchronization algorithm 102 'takes as.the' primary input, the current channel estimate 110 and produces an output comprising a correction to the current Fast Fourier Transform (FFT) sampling window position delta T (or offset) for locating the start of data within a current symbol 108. After dynamic parameter adjustment of noise filtering thresholds 104 and weak channel tap sensitivities 106 based on a calculated C/I from the channel estimate, a timing synchronization algorithm 102 locates the beginning of each continuous symbol by finding the boundary between the preamble, or cyclic prefix, and the useful data portions interlaced with pilots for channel information defining the start of a symbol 108.
摘要翻译：基于信道估计，自适应定时同步过程（100）动态地适应广域和局域信道的定时同步参数。定时同步参数根据从WID / LID能量计算的C / I估计动态调整。定时同步算法102'采用主输入，当前信道估计110，并产生包括对当前快速傅里叶变换（FFT）采样窗位置增量T（或偏移）的校正的输出，用于定位数据的开始在当前符号108内。在基于来自信道估计的计算出的C / I的噪声滤波阈值104和弱信道抽头敏感度106的动态参数调整之后，定时同步算法102通过找到每个连续符号的开始，前导码或循环前缀，以及有用数据部分与用于定义符号108的开始的信道信息的导频隔行扫描。

16. 发明申请

WO2009097345A3 COMMUNICATION OF TRANSMITTER IDENTIFICATION USING POSITIONING PILOT CHANNELS 审中-公开
标题翻译：使用定位导频信道进行发射机识别的通信
公开(公告)号：WO2009097345A3
公开(公告)日：2009-12-17
申请号：PCT/US2009032257
申请日：2009-01-28
申请人： QUALCOMM INC , MUKKAVILLI KRISHNA KIRAN , MANTRADAVI ASHOK
发明人： MUKKAVILLI KRISHNA KIRAN , MANTRADAVI ASHOK
IPC分类号： H04L5/00
CPC分类号： H04L5/0048 , H04L5/0053 , H04L23/02 , H04L27/2613 , H04W48/16
摘要： A method for communicating transmitter identification in an interlace structure of a communication network system using positioning pilot channels (PPC), comprising: a) encoding pilot information on a first portion of a plurality of subcarriers in a positioning pilot channel symbol for an active transmitter; and b) encoding transmitter identification information on a second portion of a plurality of subcarriers of the symbol; wherein the first portion of the plurality of subcarriers comprises at least first and second interlaces and the second portion of the plurality of subcarriers comprises at least a third interlace; the pilot information is scrambled in the first interlace with a wide area identifier and scrambled in the at least second interlaces with the wide area identifier and a local area identifier; and wherein at least one of the interlace includes the transmitter identification information in the form of one or more transmitter location coordinates in a free interlace.
摘要翻译：一种用于使用定位导频信道（PPC）在通信网络系统的交错结构中传送发射机识别的方法，包括：a）在有源发射机的定位导频信道符号中的多个子载波的第一部分上编码导频信息; 以及b）在所述符号的多个子载波的第二部分上编码发射机识别信息; 其中所述多个子载波的所述第一部分包括至少第一和第二交织，并且所述多个子载波的所述第二部分包括至少第三交错; 导频信息在具有广域标识符的第一交错中被加扰，并且在具有广域标识符和局域标识符的至少第二交错中加扰; 并且其中所述交错中的至少一个以自由交错的一个或多个发射机位置坐标的形式包括所述发射机识别信息。

17. 发明申请

WO2004040690A3 LOW COMPLEXITY BEAMFORMERS FOR MULTIPLE TRANSMIT AND RECEIVE ANTENNAS 审中-公开
标题翻译：用于多发射和接收天线的低复杂度波束形成器
公开(公告)号：WO2004040690A3
公开(公告)日：2004-07-15
申请号：PCT/US0334414
申请日：2003-10-29
申请人： NOKIA CORP , NOKIA INC , MUKKAVILLI KRISHNA KIRAN , SABHARWAL ASHUTOSH , AAZHANG BEHNAAM
发明人： MUKKAVILLI KRISHNA KIRAN , SABHARWAL ASHUTOSH , AAZHANG BEHNAAM
IPC分类号： H01Q21/00 , H04B7/06 , H04B7/14 , H04B1/02 , H04B7/02
CPC分类号： H04B7/0639 , H01Q21/00 , H04B7/0443 , H04B7/0617 , H04B7/0669 , H04W52/42
摘要： Beamforming systems having a few bits of channel state information fed back to the transmitter benefit from low complexity decoding structures and performances gains compared with systems that do not have channel state feedback. Both unit rank and higher rank systems are implemented. Substantial design effort may be avoided by following a method of using functions formulated for space-time systems with the change that the channel coherence time is equated to the number of transmit antennas and the number of antennas in the space-time formulation is fixed at one.
摘要翻译：与不具有信道状态反馈的系统相比，具有几比特信道状态信息的波束成形系统反馈到发射机受益于低复杂度的解码结构和性能增益。单位级别和更高级别的系统都得到实施。可以通过遵循使用针对空时系统制定的函数的方法来避免实质性的设计工作，其中改变的是信道相干时间等于发射天线的数量并且时空制定中的天线的数量固定为一。

18. 发明公开

KR20180042861A 동적 파일럿 및 제로 톤 패턴 선택으로의 위상 노이즈 추정 审中-公开
公开(公告)号：KR20180042861A
公开(公告)日：2018-04-26
申请号：KR20187004132
申请日：2016-07-11
申请人： QUALCOMM INC
发明人： SUBRAMANIAN SUNDAR , ISLAM MUHAMMAD NAZMUL , CEZANNE JUERGEN , LI JUNYI , MUKKAVILLI KRISHNA KIRAN
IPC分类号： H04L25/02 , H04B1/10 , H04L5/00 , H04L27/00 , H04L27/26 , H04L27/36
CPC分类号： H04L25/0236 , H04B1/1027 , H04L5/0048 , H04L5/006 , H04L25/0224 , H04L25/0226 , H04L27/0014 , H04L27/2646 , H04L27/2662 , H04L27/2675 , H04L27/2694 , H04L27/366 , H04L2027/002 , H04L2027/003
摘要： 위상노이즈추정을위한방법들, 시스템들, 디바이스및 장치들이설명된다. 송신디바이스는수신디바이스와연관된위상노이즈메트릭을식별한다. 위상노이즈메트릭은수신디바이스에대해예상된위상노이즈의표시를제공한다. 송신디바이스는, 위상노이즈메트릭에기초하여수신디바이스로의송신을위해서로인접한복수의파일럿톤들및 복수의널 톤들을선택한다. 복수의널 톤들은주파수도메인에있어서파일럿톤들에인접하게있고양 옆에있을수도있다. 송신디바이스는그 자신의위상노이즈메트릭을식별하고, 그자신의위상노이즈메트릭을추가로고려하여서로인접한파일럿톤들및 복수의널 톤들을선택한다. 수신디바이스는파일럿톤들및 복수의인접한널 톤들을사용하여, 송신을위한위상노이즈추정을결정할수도있다.

19. 发明公开

KR20180030833A 단일 및 다중 인터레이스 모드들을 지원하는 시간 분할 듀플렉스 （ＴＤＤ）서브프레임 구조 审中-公开
标题翻译：时分双工TDD子框架结构支持单一和多重交互模式
公开(公告)号：KR20180030833A
公开(公告)日：2018-03-26
申请号：KR20187001377
申请日：2016-06-24
申请人： QUALCOMM INC
发明人： JIANG JING , ANG PETER PUI LOK , MUKKAVILLI KRISHNA KIRAN , JI TINGFANG , SMEE JOHN EDWARD
IPC分类号： H04L5/14 , H04L5/00 , H04W72/12
CPC分类号： H04W72/1263 , H04L5/0007 , H04L5/0044 , H04L5/0055 , H04L5/1469
摘要： 본개시물의양태들은동작의단일및 다중인터레이스모드들양자모두를지원하는시간분할듀플렉스 (TDD) 서브프레임구조를제공한다. 단일인터레이스모드에있어서, 제어정보, 제어정보에대응하는데이터정보및 데이터정보에대응하는확인응답정보가단일서브프레임에포함된다. 다중인터레이스모드에있어서, 제어정보, 제어정보에대응하는데이터정보또는데이터정보에대응하는확인응답정보중 적어도하나가상이한서브프레임에포함된다. 양자의단일및 다중인터레이스모드들은 TDD 서브프레임구조내에서함께멀티플렉싱될수 있다.
摘要翻译：本公开的各方面提供了支持单和多交错操作模式的时分双工（TDD）子帧结构。在单个隔行扫描模式中，控制信息，与控制信息对应的数据信息和与数据信息对应的确认信息被包括在单个子帧中。在多隔行扫描模式下，控制信息，与控制信息对应的数据信息或与数据信息对应的确认信息中的至少一个包含在不同的子帧中。单个和多个交织模式都可以在TDD子帧结构内复用在一起。

20. 发明公开

KR20180026403A 밀리미터파 링크의 제어 심볼들에서의 조인트 채널 및 위상 노이즈 추정 审中-公开
标题翻译：毫米波链路控制符号中的联合信道和相位噪声估计
公开(公告)号：KR20180026403A
公开(公告)日：2018-03-12
申请号：KR20177037735
申请日：2016-06-03
申请人： QUALCOMM INC
发明人： CEZANNE JUERGEN , ISLAM MUHAMMAD NAZMUL , MUKKAVILLI KRISHNA KIRAN , SUBRAMANIAN SUNDAR , LI JUNYI
IPC分类号： H04L25/02 , H04B7/06 , H04J13/00 , H04L5/00 , H04L27/26
CPC分类号： H04B7/0667 , H04J13/0062 , H04L5/0007 , H04L5/0048 , H04L5/0053 , H04L25/022 , H04L25/0224 , H04L27/265
摘要： 제어심볼들에서의채널및 위상노이즈를조인트하게추정하기위한방법들, 시스템들, 및장치가본 명세서에서설명된다. 일예에있어서, 제 1 주기에서의제어톤을제어심볼의제 1 서브캐리어에삽입하는단계, 및제 2 주기에서의파일럿톤을제어심볼의제 2 서브캐리어에삽입하는단계를포함하는무선통신을위한방법이설명되며, 파일럿톤은제어심볼에서의제어톤으로부터오프셋된다. 그방법은또한제어심볼을송신하는단계를포함한다. 다른예에있어서, 제 1 주기에서의제어톤 및제 2 주기에서의파일럿톤을포함하는제어심볼을수신하는단계를포함하는무선통신을위한방법이설명되고, 파일럿톤은제어심볼에서의제어톤으로부터오프셋된다. 그방법은또한, 파일럿톤으로부터위상노이즈추정및 채널추정을수행하는단계를포함한다.
摘要翻译：这里描述的是用于联合估计控制符号中的信道和相位噪声的方法，系统和装置。在一个示例中，描述了一种用于无线通信的方法，该方法包括：以控制符号的第一子载波中的第一周期插入控制音调，并且以控制符号的第二子载波中的第二周期性插入导频音调，偏离控制符号中的控制音调。该方法还包括发送控制符号。在另一个示例中，描述了一种用于无线通信的方法，其包括：接收包括第一周期性的控制音调和第二周期性的导频音调的控制符号，所述导频音调与控制符号中的控制音调偏移。该方法还包括从导频音执行相位噪声估计和信道估计。

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