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1. 发明申请

US20090147872A1 METHOD OF RANGING SIGNAL DESIGN AND TRANSMISSION FOR MIMO-OFDMA INITIAL RANGING PROCESS 有权
标题翻译： MIMO-OFDMA初始测距过程的信号设计和传输方法
公开(公告)号：US20090147872A1
公开(公告)日：2009-06-11
申请号：US12277110
申请日：2008-11-24
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04L27/28 , H04J1/00
CPC分类号： H04J3/0682 , H04J13/16 , H04L5/0007 , H04L27/2613 , H04L27/2626 , H04L27/2655 , H04L27/2684
摘要： A mobile communication system uses a multiple-input-multiple-output (MIMO) technology with an orthogonal frequency division multiplexing access (OFDMA) scheme. Multiuser diversity, multiantenna diversity, and power control since the first ranging attempt are exploited in the initial ranging process. At network entry, an initial ranging method selects from multiple ranging signal designs to accomplish the initial ranging process. In one embodiment, three classes of ranging signal designs may be selected for use in generating ranging codes. The information on the ranging signal design to be used, which is selected by the base station based on the cell size of the communication system (i.e., the radio coverage area of the base station), is broadcast from the BS. The ranging signal designs are directly applicable to single-antenna systems, and they are applied to MIMO systems by using appropriate mapping across transmit antennas based on the adopted MIMO ranging transmission scheme. In a mobile communication system using MIMO technology with the OFDMA scheme, the ranging user selects from multiple ranging transmission schemes of different levels of computation complexity, power consumption and performance. In one example, optimum eigenmode and suboptimum eigenmode transmission schemes provide the best performance at high computational complexity and high power consumption. A simpler single-antenna selection transmission scheme provides significantly reduces computational complexity and achieves power saving at a marginal degradation in system performance.
摘要翻译：移动通信系统使用具有正交频分复用接入（OFDMA）方案的多输入多输出（MIMO）技术。多用户分集，多天线分集和功率控制，因为在初始测距过程中被利用。在网络入口处，初始测距方法从多个测距信号设计中选择，以完成初始测距过程。在一个实施例中，可以选择三类测距信号设计用于产生测距码。从基站通过基站根据通信系统的小区大小（即，基站的无线覆盖区域）选择的要使用的测距信号设计的信息。测距信号设计直接适用于单天线系统，并且通过基于所采用的MIMO测距传输方案，通过使用跨发射天线的适当映射将其应用于MIMO系统。在采用OFDMA方式的MIMO技术的移动通信系统中，测距用户从不同层次的计算复杂度，功耗和性能的多个测距传输方案中进行选择。在一个示例中，最佳本征模式和次优本征模式传输方案在高计算复杂度和高功耗下提供最佳性能。更简单的单天线选择传输方案显着降低了计算复杂度并且在系统性能的微弱降级下实现了功率节省。

2. 发明授权

US08194623B2 Evolving-type user resource structure/channelization with enhanced diversity for OFDMA based time-varying channels 有权
标题翻译：用于基于OFDMA的时变频道的增强分集的演进型用户资源结构/信道化
公开(公告)号：US08194623B2
公开(公告)日：2012-06-05
申请号：US12455268
申请日：2009-05-28
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
IPC分类号： H04W74/00
CPC分类号： H04B7/12 , H04B7/0452
摘要： An evolving-type resource structure supports high data rate services at high mobile speeds. The evolving-type resource structure is an efficient diversity-exploiting user resource structure for fast time-varying frequency-selective fading channel environments. In one example, an evolving-type resource structure takes advantages of both band-type and interleaved-type structures which exploit both multiuser diversity and frequency diversity in fast time-varying channels. The evolving-type resource structure is applicable to centralized, semi-distributed and distributed access schemes and may be used in both downlink (DL) and uplink (UL) transmissions in a cellular system.
摘要翻译：演进型资源结构支持高移动速度的高数据速率业务。演进型资源结构是用于快速时变频率选择性衰落信道环境的有效的分集利用用户资源结构。在一个示例中，演进型资源结构利用在快速时变信道中利用多用户分集和频率分集两者的带式和交织型结构的优点。演进型资源结构适用于集中式，半分布式和分布式访问方案，并可用于蜂窝系统中的下行链路（DL）和上行链路（UL）传输。

3. 发明申请

US20100118826A1 Evolving-type user resource structure/channelization with enhanced diversity for OFDMA based time-varying channels 有权
标题翻译：用于基于OFDMA的时变频道的增强分集的演进型用户资源结构/信道化
公开(公告)号：US20100118826A1
公开(公告)日：2010-05-13
申请号：US12455268
申请日：2009-05-28
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
IPC分类号： H04W72/04
CPC分类号： H04B7/12 , H04B7/0452
摘要： An evolving-type resource structure supports high data rate services at high mobile speeds. The evolving-type resource structure is an efficient diversity-exploiting user resource structure for fast time-varying frequency-selective fading channel environments. In one example, an evolving-type resource structure takes advantages of both band-type and interleaved-type structures which exploit both multiuser diversity and frequency diversity in fast time-varying channels. The evolving-type resource structure is applicable to centralized, semi-distributed and distributed access schemes and may be used in both downlink (DL) and uplink (UL) transmissions in a cellular system.
摘要翻译：演进型资源结构支持高移动速度的高数据速率业务。演进型资源结构是用于快速时变频率选择性衰落信道环境的有效的分集利用用户资源结构。在一个示例中，演进型资源结构利用在快速时变信道中利用多用户分集和频率分集两者的带式和交织型结构的优点。演进型资源结构适用于集中式，半分布式和分布式访问方案，并可用于蜂窝系统中的下行链路（DL）和上行链路（UL）传输。

4. 发明授权

US08218420B2 Non-cyclic evolving-type user resource structure for OFDMA based system with null guard tones 有权
标题翻译：具有空保护音的基于OFDMA的系统的非循环演进型用户资源结构
公开(公告)号：US08218420B2
公开(公告)日：2012-07-10
申请号：US12620422
申请日：2009-11-17
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
IPC分类号： H04W4/00
CPC分类号： H04W72/044 , H04W24/00 , H04W28/06 , H04W72/00
摘要： A non-cyclic evolving-type user resource structure applicable for use in the uplink and the downlink of an OFDMA system with large null guard tones (e.g., a 3GPP LTE system) is provided. In one example, the user resource structure combines the benefits of localized and distributed types of resource structures available in the current baseline 3GPP LTE (Release 8) specifications, and is especially suitable for operating in a fast time-varying channel. In another example, the non-cyclic evolving-type resource structure may be simplified to have no more than three stages: a band-type first stage, a partially evolved-type second stage and an interleaved-type third stage. Depending upon the target or average mobile speed and packet length, the resource structure may even have less than three stages.
摘要翻译：提供了适用于具有大的空保护音调（例如，3GPP LTE系统）的OFDMA系统的上行链路和下行链路中的非循环演进型用户资源结构。在一个示例中，用户资源结构组合了当前基准3GPP LTE（版本8）规范中可用的本地化和分布式资源结构的优点，并且特别适用于在快速时变信道中操作。在另一示例中，可以将非循环演进型资源结构简化为具有不超过三个阶段：频带型第一级，部分演进型第二级和交错型第三级。根据目标或平均移动速度和分组长度，资源结构甚至可能具有不到三个阶段。

5. 发明申请

US20100246505A1 NON-CYCLIC EVOLVING-TYPE USER RESOURCE STRUCTURE FOR OFDMA BASED SYSTEM WITH NULL GUARD TONES 有权
标题翻译：基于OFDMA系统的非循环演进型用户资源结构
公开(公告)号：US20100246505A1
公开(公告)日：2010-09-30
申请号：US12620422
申请日：2009-11-17
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
IPC分类号： H04W72/04
CPC分类号： H04W72/044 , H04W24/00 , H04W28/06 , H04W72/00
摘要： A non-cyclic evolving-type user resource structure applicable for use in the uplink and the downlink of an OFDMA system with large null guard tones (e.g., a 3GPP LTE system) is provided. In one example, the user resource structure combines the benefits of localized and distributed types of resource structures available in the current baseline 3GPP LTE (Release 8) specifications, and is especially suitable for operating in a fast time-varying channel. In another example, the non-cyclic evolving-type resource structure may be simplified to have no more than three stages: a band-type first stage, a partially evolved-type second stage and an interleaved-type third stage. Depending upon the target or average mobile speed and packet length, the resource structure may even have less than three stages.
摘要翻译：提供了适用于具有大的空保护音调（例如，3GPP LTE系统）的OFDMA系统的上行链路和下行链路中的非循环演进型用户资源结构。在一个示例中，用户资源结构组合了当前基准3GPP LTE（版本8）规范中可用的本地化和分布式资源结构的优点，并且特别适用于在快速时变信道中操作。在另一示例中，可以将非循环演进型资源结构简化为具有不超过三个阶段：频带型第一级，部分演进型第二级和交错型第三级。根据目标或平均移动速度和分组长度，资源结构甚至可能具有不到三个阶段。

6. 发明授权

US08107428B2 Method of ranging signal design and transmission for MIMO-OFDMA initial ranging process 有权
标题翻译： MIMO-OFDMA初始测距过程的测距信号设计和传输方法
公开(公告)号：US08107428B2
公开(公告)日：2012-01-31
申请号：US12277110
申请日：2008-11-24
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04W4/00 , H04J11/00 , H04L27/28
CPC分类号： H04J3/0682 , H04J13/16 , H04L5/0007 , H04L27/2613 , H04L27/2626 , H04L27/2655 , H04L27/2684
摘要： A mobile communication system uses a multiple-input-multiple-output (MIMO) technology with an orthogonal frequency division multiplexing access (OFDMA) scheme. At network entry, an initial ranging method selects from multiple ranging signal designs to accomplish the initial ranging process. Three classes of ranging signal designs may be selected for use in generating ranging codes. The information on the ranging signal design to be used, which is selected by the base station based on the cell size of the communication system (i.e., the radio coverage area of the base station), is broadcast from the BS. The ranging signal designs are directly applicable to single-antenna systems, and they are applied to MIMO systems by using appropriate mapping across transmit antennas based on the adopted MIMO ranging transmission scheme. Optimum eigenmode and suboptimum eigenmode transmission schemes provide the best performance at high computational complexity and high power consumption.
摘要翻译：移动通信系统使用具有正交频分复用接入（OFDMA）方案的多输入多输出（MIMO）技术。在网络入口处，初始测距方法从多个测距信号设计中选择，以完成初始测距过程。可以选择三类测距信号设计用于生成测距码。从基站通过基站根据通信系统的小区大小（即，基站的无线覆盖区域）选择的要使用的测距信号设计的信息。测距信号设计直接适用于单天线系统，并且通过基于所采用的MIMO测距传输方案，通过使用跨发射天线的适当映射将其应用于MIMO系统。最佳本征模式和次优本征模式传输方案在高计算复杂度和高功耗下提供最佳性能。

7. 发明申请

US20110085504A1 ADAPTIVE BEAM-FORMING AND SPACE-FREQUENCY BLOCK CODING TRANSMISSION SCHEME FOR MIMO-OFDMA SYSTEMS 审中-公开
标题翻译： MIMO-OFDMA系统的自适应波束形成和空间编码传输方案
公开(公告)号：US20110085504A1
公开(公告)日：2011-04-14
申请号：US12899394
申请日：2010-10-06
申请人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
发明人： Chia-Chin Chong , Hlaing Minn , Fujio Watanabe
IPC分类号： H04W72/00
CPC分类号： H04W72/085 , H04L1/0606 , H04L5/0007 , H04L25/0204 , H04L25/0224
摘要： In a wireless communication system including a base station and multiple mobile stations, a method transmits an orthogonal frequency division multiple access (OFDMA) data frame to the mobile stations. The method includes the steps of (a) at the beginning of the data frame, collecting metrics representing channel conditions for each of the channels; (b) assigning each mobile station to one or more communication channels based on the metrics collected; (c) for each symbol in the frame, calculating an average bit-error-rate for each of a number of transmission modes, and assigning to that symbol the transmission mode corresponding to the lowest calculated average bit-error-rate for that symbol; and (d) transmitting the symbols in the frame according to their respective assigned transmission mode. In addition, a bit-loading optimization step may be carried out in conjunction with the method to determine a modulation order for each symbol to be transmitted.
摘要翻译：在包括基站和多个移动站的无线通信系统中，方法向移动台发送正交频分多址（OFDMA）数据帧。该方法包括以下步骤：（a）在数据帧的开头，收集表示每个信道的信道条件的度量; （b）基于收集的度量将每个移动台分配给一个或多个通信信道; （c）对于帧中的每个符号，计算多个传输模式中的每一个的平均误码率，并且向该符号分配与该符号的最低计算的平均误码率相对应的传输模式; 以及（d）根据各自的分配传输模式在帧中发送符号。此外，可以结合用于确定要发送的每个符号的调制阶数的方法来执行比特加载优化步骤。

8. 发明授权

US08265203B2 Method and system of differential complex and real multi-carrier demodulation 有权
标题翻译：差分复合和多载波解调的方法和系统
公开(公告)号：US08265203B2
公开(公告)日：2012-09-11
申请号：US12579142
申请日：2009-10-14
申请人： Huilin Xu , Chia-Chin Chong , Fujio Watanabe
发明人： Huilin Xu , Chia-Chin Chong , Fujio Watanabe
IPC分类号： H03D1/00
CPC分类号： H04L27/2653 , H04L27/2639
摘要： A method and a receiver are provided for demodulating a received multi-carrier modulated signal. The demodulation procedure includes (a) multiplying the received multi-carrier modulated signal with its complex conjugate to obtain a squared signal; (b) multiplying the squared signal with a carrier demodulating signal to obtain a product signal, and integrating the product signal over the duration T. A bit decision may then be performed on the integration result using analog components without the need for high-speed analog-to-digital conversion.
摘要翻译：提供一种用于解调所接收的多载波调制信号的方法和接收机。解调过程包括（a）将接收的多载波调制信号与其复共轭相乘以获得平方信号; （b）将平方信号与载波解调信号相乘以获得乘积信号，并在持续时间T内对积分信号进行积分。然后可以使用模拟分量对积分结果进行比特判定，而不需要高速模拟数字转换。

9. 发明申请

US20110022332A1 MONITORING WELLNESS USING A WIRELESS HANDHELD DEVICE 有权
标题翻译：使用无线手持设备监控健康
公开(公告)号：US20110022332A1
公开(公告)日：2011-01-27
申请号：US12827963
申请日：2010-06-30
申请人： Aravind Kailas , Chia-Chin Chong , Fujio Watanabe
发明人： Aravind Kailas , Chia-Chin Chong , Fujio Watanabe
IPC分类号： G06F19/00
CPC分类号： A61B5/01 , A61B5/16 , G06F19/00 , G16H50/20 , G16H50/30
摘要： A method for detecting a subject's stress level associated with an activity includes (a) connecting the subject to a sensor that senses a value of a biometric; (b) during the activity, (i) repeatedly sensing the value of the biometric over each of a plurality of time windows; and (ii) computing, for each time window, a deviation in the sensed values of the biometric; and (c) detecting the stress level based on the computed deviations. In one implementation, the value of the biometric is a skin temperature measurement. The method may be implemented as an application in a wireless handheld device, such as a cellular telephone.
摘要翻译：用于检测与活动相关联的受试者的压力水平的方法包括（a）将受试者连接到感测生物特征值的传感器; （b）在活动期间，（i）在多个时间窗中的每一个上重复感测生物特征值; 和（ii）对于每个时间窗计算生物特征值的感测值的偏差; 和（c）基于所计算的偏差检测应力水平。在一个实施方案中，生物特征值是皮肤温度测量。该方法可以被实现为诸如蜂窝电话的无线手持设备中的应用。

10. 发明申请

US20090069020A1 Dynamic On-Off Spectrum Access Scheme to Enhance Spectrum Efficiency 审中-公开
标题翻译：动态开关频谱接入方案，以提高频谱效率
公开(公告)号：US20090069020A1
公开(公告)日：2009-03-12
申请号：US12192359
申请日：2008-08-15
申请人： Beibei Wang , Chia-Chin Chong , Fujio Watanabe
发明人： Beibei Wang , Chia-Chin Chong , Fujio Watanabe
IPC分类号： H04W40/00
CPC分类号： H04W16/06
摘要： The following invention related to a dynamic on-off spectrum access scheme that will coordinate among different cells, sharing the same spectrum band and enhance spectrum efficiency. Based on the proposed scheme, in particular, the cells or sectors are classified to different types according to their geographical locations. Different types of cells or sectors occupy the total available frequency in a time-sharing fashion, and the duration or priority of the “on” state for each type is chosen based on users' quality of service (QoS) demand.
摘要翻译：以下发明涉及动态开关频谱接入方案，其将在不同小区之间进行协调，共享相同的频谱带并提高频谱效率。基于所提出的方案，特别地，根据其地理位置将小区或扇区分类为不同类型。不同类型的小区或扇区以时分方式占用总可用频率，并且基于用户的服务质量（QoS）需求来选择每种类型的“开启”状态的持续时间或优先级。

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