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1. 发明申请

WO2006099532A2 AUTOMATIC FREQUENCY CONTROL FOR A WIRELESS COMMUNICATION SYSTEM WITH MULTIPLE SUBCARRIERS 审中-公开
标题翻译：具有多个SUBCARRIER的无线通信系统的自动频率控制
公开(公告)号：WO2006099532A2
公开(公告)日：2006-09-21
申请号：PCT/US2006009475
申请日：2006-03-13
申请人： QUALCOMM INC , MURTHY VINAY , GUPTA ALOK , CHUNG SEONG TAEK , LING FUYUN
发明人： MURTHY VINAY , GUPTA ALOK , CHUNG SEONG TAEK , LING FUYUN
IPC分类号： H03J7/04
CPC分类号： G06F1/0353 , H04L5/0007 , H04L5/0048 , H04L27/2659 , H04L27/266 , H04L27/2662 , H04L27/2675 , H04L27/2678
摘要： Techniques for performing frequency control in an OFDM system are described. In one aspect, frequency acquisition is performed based on a received pilot, and frequency tracking is performed based on received OFDM symbols. For frequency acquisition, an initial frequency error estimate may be derived based on the received pilot, and an automatic frequency control (AFC) loop may be initialized with the initial frequency error estimate. For frequency tracking, a frequency error estimate may be derived for each received OFDM symbol, and the AFC loop may be updated with the frequency error estimate. Frequency error in input samples is corrected by the AFC loop with the initial frequency error estimate as well as the frequency error estimate for each received OFDM symbol. In another aspect, a variable number of samples of a received OFDM symbol are selected, e.g., based on the received OFDM symbol timing, for use for frequency error estimation.
摘要翻译：描述在OFDM系统中执行频率控制的技术。在一个方面，基于接收到的导频执行频率采集，并且基于接收的OFDM符号执行频率跟踪。对于频率获取，可以基于接收到的导频来导出初始频率误差估计，并且可以利用初始频率误差估计来初始化自动频率控制（AFC）循环。对于频率跟踪，可以针对每个接收的OFDM符号导出频率误差估计，并且可以用频率误差估计来更新AFC循环。通过具有初始频率误差估计的AFC回路以及每个接收的OFDM符号的频率误差估计来校正输入采样中的频率误差。在另一方面，例如基于所接收的OFDM符号定时来选择接收的OFDM符号的可变数目的样本，以用于频率误差估计。

2. 发明申请

WO2006076439A1 METHOD AND APPARATUS FOR DECODING DATA IN A LAYERED MODULATION SYSTEM 审中-公开
标题翻译：用于在层状调制系统中解码数据的方法和装置
公开(公告)号：WO2006076439A1
公开(公告)日：2006-07-20
申请号：PCT/US2006/000996
申请日：2006-01-10
申请人： QUALCOMM INCORPORATED , VIJAYAN, Rajiv , CHUNG, Seong, Taek
发明人： VIJAYAN, Rajiv , CHUNG, Seong, Taek
IPC分类号： H04L27/34
CPC分类号： H04L27/3488 , H04L1/0045 , H04L1/005 , H04L1/0065 , H04L1/0066 , H04L1/007 , H04L27/2608 , H04L27/2626 , H04L27/2647 , H04L27/2649 , H04L2001/0098
摘要： A decoder for a layered modulation system can be configured to independently and concurrently decode each of a base and enhancement layer. The base layer decoder and enhancement layer decoder can be configured substantially in parallel and can each operate concurrently on the same received layered modulation symbol. Each of the base and enhancement layer decoders can be configured with a bit metric module that is configured to determine a signal quality metric based on the received symbol. In systems having turbo encoded data, the bit metric module can be configured to determine a log likelihood ratio. The ratio is based in part on a channel estimate and an energy ratio used in the layered modulation constellation.
摘要翻译：用于分层调制系统的解码器可以被配置为独立地并且解码每个基本和增强层。基本层解码器和增强层解码器可以被配置为基本并行，并且可以在相同的接收分层调制符号上同时进行操作。基本和增强层解码器中的每一个可以配置有比特度量模块，其被配置为基于接收到的符号来确定信号质量度量。在具有turbo编码数据的系统中，比特量度模块可以被配置为确定对数似然比。该比率部分地基于在分层调制星座中使用的信道估计和能量比。

3. 发明申请

WO2007130879A2 VIDEO STREAMING DIAGNOSTICS 审中-公开
标题翻译：视频流媒体诊断
公开(公告)号：WO2007130879A2
公开(公告)日：2007-11-15
申请号：PCT/US2007/067720
申请日：2007-04-27
申请人： ASSIA INC. , AT & T KNOWLEDGE VENTURES L.P. , CHUNG, Seong, Taek , GINIS, George , SILVERMAN, Peter, J. , BEDNARZ, Philip , SAVOOR, Raghvendra , LI, Zhi
发明人： CHUNG, Seong, Taek , GINIS, George , SILVERMAN, Peter, J. , BEDNARZ, Philip , SAVOOR, Raghvendra , LI, Zhi
CPC分类号： H04L65/80 , H04B3/46 , H04L12/6418 , H04L43/0882 , H04L69/323 , H04L2012/6478 , H04M3/304 , H04M11/062
摘要： A video stream DSL analyzer receives at least non-physical layer management data and physical layer management data and in response generates metric information. The generated metric information is used to characterize the performance of the video steam information and diagnose any problems if necessary. In response to the metric information, the video stream DSL analyzer changes one or more DSL configuration(s) in order to improve performance.
摘要翻译：视频流DSL分析仪至少接收非物理层管理数据和物理层管理数据，并且响应于生成度量信息。生成的度量信息用于表征视频蒸汽信息的性能，并在必要时诊断任何问题。响应于度量信息，视频流DSL分析器改变一个或多个DSL配置，以便提高性能。

4. 发明申请

WO2007106878A1 FREQUENCY TRACKING WHICH ADAPTS TO TIMING SYNCHRONIZATION 审中-公开
标题翻译：适应时序同步的频率跟踪
公开(公告)号：WO2007106878A1
公开(公告)日：2007-09-20
申请号：PCT/US2007/064022
申请日：2007-03-14
申请人： QUALCOMM Incorporated , VRCELJ, Bojan , KRISHNAMOORTHI, Raghuraman , CHUNG, Seong Taek , LING, Fuyun
发明人： VRCELJ, Bojan , KRISHNAMOORTHI, Raghuraman , CHUNG, Seong Taek , LING, Fuyun
IPC分类号： H04L27/26
CPC分类号： H04L27/2657 , H04L27/2607 , H04L27/2665 , H04L27/2678 , H04L27/2695
摘要： A frequency tracking method and apparatus is provided. A receiver receives OFDM symbols and determines associated frequency offset. A frequency error estimator selects a cross correlation window for determining frequency offset based on timing offset. A symbol timing estimator is used to determine the timing offset.
摘要翻译：提供了一种频率跟踪方法和装置。接收机接收OFDM符号并确定相关的频率偏移。频率误差估计器基于定时偏移来选择用于确定频率偏移的互相关窗口。使用符号定时估计器来确定定时偏移。

5. 发明申请

WO2007082192A1 METHODS AND APPARATUS FOR FREQUENCY TRACKING OF A RECEIVED SIGNAL 审中-公开
标题翻译：频率跟踪接收信号的方法和装置
公开(公告)号：WO2007082192A1
公开(公告)日：2007-07-19
申请号：PCT/US2007/060250
申请日：2007-01-08
申请人： QUALCOMM INCORPORATED , CHUNG, Seong Taek , MUKKAVILLI, Krishna, Kiran , MURTHY, Vinay , TIAN, Tao
发明人： CHUNG, Seong Taek , MUKKAVILLI, Krishna, Kiran , MURTHY, Vinay , TIAN, Tao
IPC分类号： H04L27/26
CPC分类号： H04L27/2657 , H04L27/2675
摘要： Methods and apparatus for frequency tracking of a received signal. In an aspect, a method is provided wherein the received signal comprises one or more symbols having a periodic structure. The method comprises receiving a plurality of samples of a selected symbol that comprises pilot signals scrambled with data and determining a window size and a periodicity factor. The method also comprises accumulating a correlation between samples in a first window and samples in a second window to produce an accumulated correlation value, wherein the first and second windows have a size and a separation based on the window size and the periodicity factor, respectively, and deriving a frequency error estimate based on the accumulated correlation value.
摘要翻译：接收信号频率跟踪的方法和装置。在一方面，提供了一种方法，其中接收的信号包括具有周期性结构的一个或多个符号。该方法包括：接收包含由数据加扰的导频信号和确定窗口大小和周期因子的所选符号的多个样本。该方法还包括在第一窗口中累积样本之间的相关性并在第二窗口中采样以产生累加的相关值，其中第一和第二窗口分别具有基于窗口大小和周期性因子的大小和间隔，以及基于所累积的相关值导出频率误差估计。

6. 发明申请

WO2007008835A2 DSL SYSTEM ESTIMATION 审中-公开
标题翻译： DSL系统估计
公开(公告)号：WO2007008835A2
公开(公告)日：2007-01-18
申请号：PCT/US2006/026795
申请日：2006-07-08
申请人： ADAPTIVE SPECTRUM AND SIGNAL ALIGNMENT, INC. , CIOFFI, John, M. , RHEE, Wonjong , LEE, Bin , CHUNG, Seong, Taek , GINIS, Georgios
发明人： CIOFFI, John, M. , RHEE, Wonjong , LEE, Bin , CHUNG, Seong, Taek , GINIS, Georgios
IPC分类号： G06F7/52
CPC分类号： H04L41/145 , H04L41/0213 , H04L41/0803 , H04L41/0853 , H04M3/2209 , H04M3/2263 , H04M3/247 , H04M11/062
摘要： Estimates of a communication system configuration, such as a DSL system, are based on operational data collected from a network element management system, protocol, users and/or the like. The operational data collected from the system can include performance-characterizing operational data that typically is available in a DSL system via element-management-system protocols. Generated estimates and/or approximations can be used in evaluating system performance and directly or indirectly dictating/requiring changes or recommending improvements in operation by transmitters and/or other parts of the communication system. Data and/or other information may be collected using "internal" means or may be obtained from system elements and components via email and/or other "external" means. The likelihood of a model's accuracy can be based on various data, information and/or indicators of system performance, such as observed normal operational data, test data and/or prompted operational data that shows operating performance based on stimulation signals. One example of such prompted data uses the Hlog of a given channel to obtain information regarding bridged taps, bad splices, and missing micro-filters.
摘要翻译：诸如DSL系统的通信系统配置的估计基于从网元管理系统，协议，用户等收集的操作数据。从系统收集的操作数据可以包括通过元件管理系统协议在DSL系统中通常可用的性能表征操作数据。生成的估计和/或近似值可用于评估系统性能，并直接或间接规定/要求更改或推荐通过发射机和/或通信系统的其他部分的操作改进。可以使用“内部”手段收集数据和/或其他信息，或者可以通过电子邮件和/或其他“外部”手段从系统元件和组件获得。模型的准确性的可能性可以基于系统性能的各种数据，信息和/或指示符，例如观察到的正常操作数据，测试数据和/或显示基于刺激信号的操作性能的提示操作数据。这种提示数据的一个示例使用给定信道的Hlog来获得关于桥接抽头，坏接头和丢失的微过滤器的信息。

7. 发明申请

WO2006094140A1 DUAL-LOOP AUTOMATIC FREQUENCY CONTROL FOR WIRELESS COMMUNICATION 审中-公开
标题翻译：双循环自动频率控制无线通信
公开(公告)号：WO2006094140A1
公开(公告)日：2006-09-08
申请号：PCT/US2006/007453
申请日：2006-03-01
申请人： QUALCOMM INCORPORATED , CHUNG, Seong Taek , GUPTA, Alok , LING, Fuyun , MURTHY, Vinay
发明人： CHUNG, Seong Taek , GUPTA, Alok , LING, Fuyun , MURTHY, Vinay
IPC分类号： H03J7/04
CPC分类号： H03J7/04 , H03J1/0083
摘要： Techniques for performing frequency control using dual-loop automatic frequency control (AFC) are described. The dual-loop AFC includes an inner loop that corrects short-term frequency variations (e.g., due to Doppler effect) and an outer loop that corrects long-term frequency variations (e.g., due to component tolerances and temperature variations). In one design, a first inner loop is implemented for frequency control of a first system (e.g., a broadcast system), a second inner loop is implemented for frequency control of a second system (e.g., a cellular system), and at least one outer loop is implemented for adjusting a reference frequency used to receive the first and second systems. Each inner loop estimates and corrects the frequency error in an input signal for the associated system and may be enabled when receiving the system. The reference frequency may be used for frequency downconversion, sampling and/or other purposes.
摘要翻译：描述了使用双回路自动频率控制（AFC）进行频率控制的技术。双回路AFC包括校正短期频率变化（例如，由于多普勒效应引起的）的内部循环和纠正长期频率变化（例如，由于部件公差和温度变化）的外部回路。在一种设计中，为第一系统（例如，广播系统）的频率控制实现第一内环，为第二系统（例如，蜂窝系统）的频率控制实现第二内环，并且至少一个实现外环以调整用于接收第一和第二系统的参考频率。每个内循环估计和校正相关系统的输入信号中的频率误差，并且可以在接收系统时使能。参考频率可用于下变频，采样和/或其他目的。

8. 发明申请

WO2006076451A2 METHODS AND APPARATUS FOR TRANSMITTING LAYERED AND NON-LAYERED DATA VIA LAYERED MODULATION 审中-公开
标题翻译：通过分层调制发送分层和非分层数据的方法和设备
公开(公告)号：WO2006076451A2
公开(公告)日：2006-07-20
申请号：PCT/US2006/001014
申请日：2006-01-11
申请人： QUALCOMM INCORPORATED , COLLINS, Bruce , KRISHNAMURTHI, Rajeev , MURALI, Ramaswamy , GAUTAM, Shusheel , VIJAYAN, Rajiv , CHUNG, Seong Taek
发明人： COLLINS, Bruce , KRISHNAMURTHI, Rajeev , MURALI, Ramaswamy , GAUTAM, Shusheel , VIJAYAN, Rajiv , CHUNG, Seong Taek
IPC分类号： H04L27/34
CPC分类号： H04L1/0065 , H04L1/0041 , H04L1/0045 , H04L1/0058 , H04L5/023 , H04L27/3488 , H04L2001/0098
摘要： A media access control (MAC) layer controller can manage base layer data and enhancement layer data in a layered modulation system. The MAC layer controller can process both base layer data and enhancement layer data and map the encoded symbols to a layered modulation constellation when both are present. If data for one of the layers terminates, then the MAC layer controller can generate and supply predetermined stuffing data to the layer lacking additional data. The MAC layer controller can send a control signal to the physical layer hardware to cause the hardware to map the layered signals having the stuffing data to a modified signal constellation. The MAC controller can also generate an overhead message that indicates the occurrence of the stuffing data. The receiver can receive the overhead message and can use the information to configure the receiver for the layered modulation constellation or the modified signal constellation.
摘要翻译：媒体访问控制（MAC）层控制器可以管理分层调制系统中的基础层数据和增强层数据。当两者都存在时，MAC层控制器可以处理基础层数据和增强层数据并将编码后的符号映射到分层调制星座。如果其中一个层的数据终止，则MAC层控制器可以生成并提供预定的填充数据给缺少附加数据的层。 MAC层控制器可以发送控制信号给物理层硬件，以使硬件将具有填充数据的分层信号映射到修改的信号星座。 MAC控制器还可以生成指示填充数据发生的开销消息。接收器可以接收开销消息并且可以使用该信息来配置用于分层调制星座或修改的信号星座的接收器。

9. 发明申请

WO2008073327A3 DSL RING SIGNAL COMPATIBILITY 审中-公开
标题翻译： DSL环信号兼容性
公开(公告)号：WO2008073327A3
公开(公告)日：2008-10-09
申请号：PCT/US2007025134
申请日：2007-12-07
申请人： ADAPTIVE SPECTRUM & SIGNAL , FLOWERS MARK B , CIOFFI JOHN M , CHUNG SEONG TAEK
发明人： FLOWERS MARK B , CIOFFI JOHN M , CHUNG SEONG TAEK
IPC分类号： H04M3/08 , H04M3/22 , H04M3/30
CPC分类号： H04M3/304 , H04M3/08 , H04M3/2218 , H04M2201/12 , H04M2201/18
摘要： A method of detecting that a condition exists that adversely impacts a digital subscriber line service (DSL) over a telephone line shared by the DSL service and a telephone service. The method includes obtaining information regarding operation of the DSL service over a plurality of different time periods, comparing the information for a first of the plurality of time periods with the information for a second of the plurality of time periods, and determining the condition exists based on the comparison.
摘要翻译：一种检测存在条件的方法，该条件在由DSL服务和电话服务共享的电话线上对数字订户线服务（DSL）产生不利影响。该方法包括获得关于多个不同时间段上的DSL服务的操作的信息，将多个时间段中的第一个的信息与多个时间段中的第二个的信息进行比较，以及基于在比较。

10. 发明申请

WO2007008836A8 ADAPTIVE MARGIN AND BAND CONTROL 审中-公开
标题翻译：自适应和带控制
公开(公告)号：WO2007008836A8
公开(公告)日：2008-03-06
申请号：PCT/US2006026796
申请日：2006-07-08
申请人： ADAPTIVE SPECTRUM & SIGNAL , CIOFFI JOHN M , RHEE WONJONG , GINIS GEORGIOS , CHUNG SEONG TAEK
发明人： CIOFFI JOHN M , RHEE WONJONG , GINIS GEORGIOS , CHUNG SEONG TAEK
IPC分类号： H04B1/38
CPC分类号： H04L5/14 , H04L5/1438
摘要： Configuration or otherwise controlling parameters of a DSL system related to power, band usage and margin is based on collected operational data. Operational data are collected from at least one DSL system operating under a known configuration and/or a profile. A target profile is selected based on binder-level information. The collected operational data is analyzed and conditions for changing the DSL system configuration to the target profile are evaluated, including any applicable transition rules pertaining to changing profiles. If the conditions hold, then the DSL system is instructed to operate with the target profile. Binder-level information can include deployment point information, topology information, and/or crosstalk coupling information. The controlled parameters may have values that are chosen using one or more spectrum balancing methods. Such spectrum balancing methods may be executed infrequently, and may make use of all binder-level information that is available.
摘要翻译：配置或以其他方式控制DSL系统与功率，频带使用和裕量相关的参数是基于收集的操作数据。从已知配置和/或配置文件操作的至少一个DSL系统收集操作数据。基于绑定器级信息选择目标配置文件。分析收集的操作数据，并评估将DSL系统配置更改为目标配置文件的条件，包括与更改配置文件有关的任何适用的转换规则。如果条件成立，则指示DSL系统与目标配置文件一起操作。粘合剂级信息可以包括部署点信息，拓扑信息和/或串扰耦合信息。受控参数可以具有使用一个或多个频谱平衡方法选择的值。这种频谱平衡方法可能不频繁地执行，并且可以利用可用的所有绑定器级信息。

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