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1. 发明申请

US20090116419A1 METHOD AND SYSTEM OF THRESHOLD SELECTION FOR RELIABLE RELAY STATIONS GROUPING FOR DOWNLINK TRANSMISSION 审中-公开
标题翻译：用于下行链路传输分组的可靠继电器的阈值选择方法和系统
公开(公告)号：US20090116419A1
公开(公告)日：2009-05-07
申请号：US12257325
申请日：2008-10-23
申请人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04H20/71
CPC分类号： H04B7/024 , H04B7/15592 , H04W16/26
摘要： A relaying selection and cooperative communications method provides a threshold selection criterion for forming a reliable group of relay stations (RSs) based on one or more design criteria. Possible design criteria include an outage probability constraint and a throughput constraint. The threshold value is selected according to, for example, transmission paths (e.g., line-of-sight, obstructed-light-of-sight, non-light-of-sight) or channel conditions (e.g., signal-to-noise-ratio) between the base station (BS) and the RSs (i.e., BS-RSs link) and between the RSs and the mobile station (MS) (i.e., RSs-MS link), respectively.
摘要翻译：中继选择和协作通信方法基于一个或多个设计标准提供用于形成可靠的中继站组（RS）的阈值选择准则。可能的设计标准包括中断概率约束和吞吐量约束。根据例如传输路径（例如，视线，被遮蔽的视野，不可见光）或信道条件（例如，信噪比）来选择阈值，基站（BS）和RS（即BS-RS链路）之间以及RS和移动台（MS）之间的RS（比例）比率）（即，RSs-MS链路）。

2. 发明授权

US08208587B2 Method and system for joint time-of-arrival and amplitude estimation based on a super-resolution technique 有权
标题翻译：基于超分辨率技术的联合到达时间和幅度估计的方法和系统
公开(公告)号：US08208587B2
公开(公告)日：2012-06-26
申请号：US12106188
申请日：2008-04-18
申请人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H03D1/00 , H04L27/06
CPC分类号： H04L25/0202 , G01S3/043 , G01S5/0215 , G01S5/0221 , G01S11/02 , H04B1/7105 , H04B1/7107 , H04B1/7115
摘要： In a geolocation application, a method is provided to jointly estimate the time-of-arrival (TOA) and the amplitude of a received signal based on super-resolution technique. The super-resolution joint TOA-amplitude estimators are provided based on either the expectation-maximization (EM), parallel-interference-cancellation space-alternating generalized expectation maximization (PIC-SAGE) or serial-interference-cancellation SAGE (SIC-SAGE). The SIC-SAGE estimator minimizes the ranging estimation error especially under a non-line-of-sight (NLOS) condition. The SIC-SAGE estimator is a simplified version of the maximum likelihood estimator with more stable performance in a multipath rich environment, such as the ultra-wideband (UWB) based applications. These techniques provide the following benefits: 1) it is generic, so that signal processing can be deployed on both time-domain (e.g., UWB impulse-radio) and frequency-domain (e.g., multi-band orthogonal frequency-division multiplexing (MB-OFDM)) based transceiver schemes and applicable for both UWB and non-UWB systems; 2) it is robust especially under NLOS condition and multipath rich environment.
摘要翻译：在地理位置应用中，提供了一种基于超分辨率技术共同估计接收信号的时间（TOA）和接收信号幅度的方法。基于期望最大化（EM），并行干扰消除空间交替广义期望最大化（PIC-SAGE）或串行干扰消除SAGE（SIC-SAGE）提供超分辨率联合TOA幅度估计器，。 SIC-SAGE估计器最小化了测距估计误差，特别是在非视距（NLOS）条件下。 SIC-SAGE估计器是最大似然估计器的简化版本，在富路由多环境中具有更稳定的性能，例如基于超宽带（UWB）的应用。这些技术提供以下优点：1）它是通用的，使得信号处理可以在时域（例如，UWB脉冲无线电）和频域上部署（例如，多频带正交频分复用（MB -OFDM））收发器方案，适用于UWB和非UWB系统; 2）特别是在NLOS条件和多路径丰富的环境下，它是强大的。

3. 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。

4. 发明申请

US20080188253A1 METHOD AND SYSTEM FOR WIRELESS DESIGN SUBJECT TO INTERFERENCE CONSTRAINTS 审中-公开
标题翻译：用于干扰约束的无线设计的方法和系统
公开(公告)号：US20080188253A1
公开(公告)日：2008-08-07
申请号：US12019562
申请日：2008-01-24
申请人： Chia-Chin Chong , Pedro C. Pinto , Moe Z. Win , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Pedro C. Pinto , Moe Z. Win , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04B15/00 , H04B7/00
CPC分类号： H04W16/22
摘要： A wireless communication system experience interference from other wireless communication networks. A method for designing wireless communication systems subject to interference is proposed based on a realistic interference model which accounts for the propagation effects introduced by the wireless environment (such as path loss, shadowing, and multipath fading), and for the spatial scattering of transmitters (using a Poisson field). The method accounts for tradeoffs between network parameters, such as signal-to-noise ratio (SNR), interference-to-noise ratio (INR), path loss exponent, spatial density of the interferers, and error probability. Advantages of this method include: 1) a unified framework for designing a wireless system, subject to cumulative interference and noise, incorporating a wide range of performance metrics; and 2) a general application that covers a broad class of wireless communication systems and channel fading distributions.
摘要翻译：无线通信系统经受来自其他无线通信网络的干扰。提出了一种用于设计受干扰的无线通信系统的方法，该实际干扰模型考虑了由无线环境引入的传播效应（如路径损耗，阴影和多径衰落）以及发射机的空间散射（使用泊松场）。该方法考虑了网络参数之间的折衷，如信噪比（SNR），干扰信噪比（INR），路径损耗指数，干扰源的空间密度和误差概率。该方法的优点包括：1）设计无线系统的统一框架，受到累积干扰和噪声的影响，并结合广泛的性能指标; 和2）涵盖广泛类别的无线通信系统和信道衰落分布的通用应用。

5. 发明申请

US20080186842A1 DETECT-AND-MULTIPLEX TECHNIQUE FOR SPECTRUM SHARING 审中-公开
标题翻译：用于光谱共享的检测和多重技术
公开(公告)号：US20080186842A1
公开(公告)日：2008-08-07
申请号：US12019547
申请日：2008-01-24
申请人： Chia-Chin Chong , Pedro C. Pinto , Moe Z. Win , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Pedro C. Pinto , Moe Z. Win , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04J9/00
CPC分类号： H04W16/14
摘要： A wireless communication system and a detect-and-multiplex (DAM) spectrum sharing technique eliminate contention by secondary spectrum users by multiplexing multiple access methods. Suitable multiple access methods include time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA), space division multiple access (SDMA), orthogonal frequency division multiple access (OFDMA), spectral nulling (SN) or a hybrid scheme (HS) based on a combination of two or more of the above techniques. Unlike, detect-and-avoid (DAA) multiple access methods, the DAM method increases spectrum usage efficiency, and allows more users to share the same region of the spectrum.
摘要翻译：无线通信系统和检测与复用（DAM）频谱共享技术通过复用多种接入方式消除了二级频谱用户的争用。合适的多址方法包括时分多址（TDMA），频分多址（FDMA），码分多址（CDMA），空分多址（SDMA），正交频分多址（OFDMA），频谱归零）或基于两种或更多种上述技术的组合的混合方案（HS）。与DAA方法不同的是，DAM方法提高了频谱使用效率，并且允许更多用户共享频谱的相同区域。

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

US20090116422A1 METHOD AND SYSTEM FOR OPPORTUNISTIC HYBRID RELAY SELECTION SCHEME FOR DOWNLINK TRANSMISSION 审中-公开
标题翻译：用于下行链路传输的机动混合继电器选择方案的方法和系统
公开(公告)号：US20090116422A1
公开(公告)日：2009-05-07
申请号：US12257334
申请日：2008-10-23
申请人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04B7/14
CPC分类号： H04B7/026 , H04B7/15592
摘要： An opportunistic hybrid-relay selection scheme for downlink transmission selects between cooperative relay and single relay schemes based on the channel conditions (e.g., signal-to-noise-ratio (SNR)) between the base station (BS) and RSs (i.e., BS-RSs link) and RSs and mobile station (MS) (i.e., RSs-MS link), respectively. In another selection scheme, a selection between the single relay (e.g., best-relay) transmission scheme or the cooperative-relay transmission scheme may be determined based on transmission paths (e.g., line-of-sight, obstructed-light-of-sight, non-light-of-sight) and channel conditions (e.g., SNR) between the BS-RSs link and the RSs-MS link, respectively.
摘要翻译：用于下行链路传输的机会混合中继选择方案基于基站（BS）和RS之间的信道条件（例如，信噪比（SNR））来选择协作中继和单中继方案之间的选择（即，BS -RSs链路）和RSs和移动站（MS）（即RSs-MS链路）。在另一种选择方案中，可以基于传输路径（例如，视线，视障碍的视线）来确定单个中继（例如，最佳中继）传输方案或协作中继传输方案之间的选择，非光线）和BS-RS链路和RS-MS链路之间的信道条件（例如，SNR）。

8. 发明申请

US20080267304A1 METHOD AND SYSTEM FOR JOINT TIME-OF-ARRIVAL AND AMPLITUDE ESTIMATION BASED ON A SUPER-RESOLUTION TECHNIQUE 有权
标题翻译：基于超分辨率技术的接合时间和幅度估计的方法和系统
公开(公告)号：US20080267304A1
公开(公告)日：2008-10-30
申请号：US12106188
申请日：2008-04-18
申请人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
发明人： Chia-Chin Chong , Fujio Watanabe , Hiroshi Inamura
IPC分类号： H04L27/28
CPC分类号： H04L25/0202 , G01S3/043 , G01S5/0215 , G01S5/0221 , G01S11/02 , H04B1/7105 , H04B1/7107 , H04B1/7115
摘要： In a geolocation application, a method is provided to jointly estimate the time-of-arrival (TOA) and the amplitude of a received signal based on super-resolution technique. The super-resolution joint TOA-amplitude estimators are provided based on either the expectation-maximization (EM), parallel-interference-cancellation space-alternating generalized expectation maximization (PIC-SAGE) or serial-interference-cancellation SAGE (SIC-SAGE). The SIC-SAGE estimator minimizes the ranging estimation error especially under a non-line-of-sight (NLOS) condition. The SIC-SAGE estimator is a simplified version of the maximum likelihood estimator with more stable performance in a multipath rich environment, such as the ultra-wideband (UWB) based applications. These techniques provide the following benefits: 1) it is generic, so that signal processing can be deployed on both time-domain (e.g., UWB impulse-radio) and frequency-domain (e.g., multi-band orthogonal frequency-division multiplexing (MB-OFDM)) based transceiver schemes and applicable for both UWB and non-UWB systems; 2) it is robust especially under NLOS condition and multipath rich environment.
摘要翻译：在地理位置应用中，提供了一种基于超分辨率技术共同估计接收信号的时间（TOA）和接收信号幅度的方法。基于期望最大化（EM），并行干扰消除空间交替广义期望最大化（PIC-SAGE）或串行干扰消除SAGE（SIC-SAGE）提供超分辨率联合TOA幅度估计器，。 SIC-SAGE估计器最小化了测距估计误差，特别是在非视距（NLOS）条件下。 SIC-SAGE估计器是最大似然估计器的简化版本，在富路由多环境中具有更稳定的性能，例如基于超宽带（UWB）的应用。这些技术提供以下优点：1）它是通用的，使得信号处理可以在时域（例如，UWB脉冲无线电）和频域上部署（例如，多频带正交频分复用（MB -OFDM））收发器方案，适用于UWB和非UWB系统; 2）特别是在NLOS条件和多路径丰富的环境下，它是强大的。

9. 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。

10. 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。

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