WIRELESS LOCALIZATION TECHNIQUES IN LIGHTING SYSTEMS
    1.
    发明申请
    WIRELESS LOCALIZATION TECHNIQUES IN LIGHTING SYSTEMS 有权
    照明系统中的无线本地化技术

    公开(公告)号:US20120013508A1

    公开(公告)日:2012-01-19

    申请号:US13132340

    申请日:2009-11-16

    IPC分类号: G01S5/02

    CPC分类号: G01S5/0263 H05B37/0272

    摘要: The invention relates to a system and method for localization positioning in lighting systems. At least two of a Time Difference of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Index (RSSI) and a Position Estimation Algorithm with unified TDOA and RSSI are used to obtain localization positioning. The schemes introduce a maximum-likelihood estimation strategy incorporating a partial derivative matrix for each lighting unit using at least two reference nodes in order to achieve higher accuracy.

    摘要翻译: 本发明涉及一种用于照明系统中定位定位的系统和方法。 使用统一TDOA和RSSI的到达时差(TDOA),到达角(AOA),接收信号强度指数(RSSI)和位置估计算法中至少有两个获得定位。 这些方案引入了使用至少两个参考节点并入每个照明单元的偏导数矩阵的最大似然估计策略,以便实现更高的精度。

    Wireless localization techniques in lighting systems
    2.
    发明授权
    Wireless localization techniques in lighting systems 有权
    照明系统中的无线本地化技术

    公开(公告)号:US08570221B2

    公开(公告)日:2013-10-29

    申请号:US13132340

    申请日:2009-11-16

    IPC分类号: G01S3/02

    CPC分类号: G01S5/0263 H05B37/0272

    摘要: The invention relates to a system and method for localization positioning in lighting systems. At least two of a Time Difference of Arrival (TDOA), Angle of Arrival (AOA), Received Signal Strength Index (RSSI) and a Position Estimation Algorithm with unified TDOA and RSSI are used to obtain localization positioning. The schemes introduce a maximum-likelihood estimation strategy incorporating a partial derivative matrix for each lighting unit using at least two reference nodes in order to achieve higher accuracy.

    摘要翻译: 本发明涉及一种用于照明系统中定位定位的系统和方法。 使用统一TDOA和RSSI的到达时差(TDOA),到达角(AOA),接收信号强度指数(RSSI)和位置估计算法中至少有两个获得定位。 这些方案引入了使用至少两个参考节点并入每个照明单元的偏导数矩阵的最大似然估计策略,以便实现更高的精度。

    Method of packet retransmission and reception and wireless device employing the same
    3.
    发明授权
    Method of packet retransmission and reception and wireless device employing the same 有权
    分组重传和接收方法以及采用该方法的无线设备

    公开(公告)号:US09397779B2

    公开(公告)日:2016-07-19

    申请号:US12812640

    申请日:2009-01-23

    摘要: A first wireless device communicates data to a second wireless device. The first wireless device employs at least one of a first interleaving scheme and a first sub-carrier mapping scheme to produce a first data packet from a first plurality of data bits, and transmits the first data packet to the second wireless device. When the first data packet is not received correctly by the second wireless device, then the first wireless device employs at least one of a second interleaving scheme and a second sub-carrier mapping scheme to create a second data packet from the first plurality of data bits, and transmits the second data packet to the second wireless device.

    摘要翻译: 第一无线设备将数据传送到第二无线设备。 第一无线设备采用第一交织方案和第一子载波映射方案中的至少一个从第一多个数据比特产生第一数据分组,并将第一数据分组发送到第二无线设备。 当第二无线设备未正确接收到第一数据分组时,第一无线设备采用第二交织方案和第二子载波映射方案中的至少一个从第一多个数据比特中产生第二数据分组 ,并将第二数据分组发送到第二无线设备。

    Signaling method and apparatus to enable multiple antenna communications in wireless systems
    4.
    发明授权
    Signaling method and apparatus to enable multiple antenna communications in wireless systems 有权
    用于在无线系统中实现多天线通信的信令方法和装置

    公开(公告)号:US08773994B2

    公开(公告)日:2014-07-08

    申请号:US13263136

    申请日:2010-03-24

    IPC分类号: G01R31/08

    摘要: A method (200) for signaling a transmission mode in a wireless communication networks comprises selecting a signature sequence corresponding to the transmission mode of a transmitting device (S210); forming, for each antenna in the transmitting device, a synchronization field based on the selected signature sequence, wherein the synchronization field is included in a preamble (S220); and transmitting, from each antenna in the transmitting device, the data frame that comprises the preamble.

    摘要翻译: 一种用于在无线通信网络中发送传输模式的信令的方法(200)包括:选择与传输设备的传输模式对应的签名序列(S210); 针对所述发送装置中的每个天线形成基于所选择的签名序列的同步字段,其中所述同步字段包括在前导码中(S220); 并且从发送装置中的每个天线发送包括前导码的数据帧。

    BACKHAUL LINK ASSISTED INDOOR SPECTRUM USE ENFORCEMENT SOLUTION FOR MBAN SERVICES
    5.
    发明申请
    BACKHAUL LINK ASSISTED INDOOR SPECTRUM USE ENFORCEMENT SOLUTION FOR MBAN SERVICES 有权
    反向链接协助室内光谱使用强制解决方案用于MBAN服务

    公开(公告)号:US20130337842A1

    公开(公告)日:2013-12-19

    申请号:US14001683

    申请日:2012-02-24

    IPC分类号: H04W4/02

    摘要: A medical system includes one or more MBAN devices which acquire and communicate patient data. One or more medical body area network (MBAN) systems include the one or more MBAN devices communicating the patient data with a hub device via short-range wireless communication. The communication of the patient data via the short-range wireless communication being within a predefined spectrum. The hub device receives patient data communicated from the one or more MBAN devices, communicates with a central monitoring station via a longer range communication and one or more access points (AP), and determines the location of the MBAN system in reference to a healthcare facility. The one or more MBAN devices are inhibited from transmitting within the predefined spectrum when the MBAN hub device is located outside the healthcare facility.

    摘要翻译: 医疗系统包括一个或多个MBAN设备,其获取并传达患者数据。 一个或多个医疗体区域网络(MBAN)系统包括一个或多个MBAN设备,通过短距离无线通信将患者数据与集线器设备通信。 通过短距离无线通信的患者数据的通信处于预定义的频谱内。 集线器设备接收从一个或多个MBAN设备传送的患者数据,经由较长距离通信和一个或多个接入点(AP)与中央监控站进行通信,并且参考医疗机构确定MBAN系统的位置 。 当MBAN集线器设备位于保健设施之外时,禁止在预定频谱内发送一个或多个MBAN设备。

    Interleaving and parsing for MIMO-OFDM systems
    6.
    发明授权
    Interleaving and parsing for MIMO-OFDM systems 有权
    用于MIMO-OFDM系统的交织和解析

    公开(公告)号:US08527855B2

    公开(公告)日:2013-09-03

    申请号:US11203593

    申请日:2005-08-12

    申请人: Monisha Ghosh

    发明人: Monisha Ghosh

    IPC分类号: H03M13/03

    CPC分类号: H03M13/25 H03M13/271

    摘要: A wireless bit-interleaved coded OFDM (BI-COFDM) multiple-in-multiple-out (MIMO) system that improves the diversity seen by a convolutional decoder. The bit stream is interleaved first, then bits are mapped into symbols and then symbols are parsed into Nt separate streams, where t is the number of transmitters. A deinterleaver then performs the inverse permutation before sending the symbols to a Viturbi decoder. In another embodiment, a transmitting side bit-interleaver transforms an encoded and punctured bit stream using a first permutation, groups the transformed bit stream according to a desired constellation on one of Nt antennae, splits the transformed bit stream into separate streams accordingly and bit-interleaves/symbol-maps using a plurality of bit-interleavers/symbol-mappers to permute each stream using a second permutation. A receiving side performs the inverse operations of the transmitting side.

    摘要翻译: 一种无线比特交织编码OFDM(BI-COFDM)多输入多输出(MIMO)系统,其改善了卷积解码器所看到的分集。 比特流首先交织,然后将比特映射成符号,然后将符号解析成Nt个独立的流,其中t是发射机的数量。 然后,解交织器在将符号发送到Viturbi解码器之前执行逆置换。 在另一个实施例中,发送侧比特交织器使用第一置换来变换编码和打孔的比特流,根据Nt天线中的一个天线上的所需星座对经变换的比特流进行分组,相应地将经变换的比特流分解成单独的流, 使用多个比特交织器/符号映射器进行交织/符号映射,以使用第二置换来排列每个流。 接收侧执行发送侧的反向操作。

    METHOD AND SYSTEM OF BEACON TRANSMISSION AND RECEPTION
    7.
    发明申请
    METHOD AND SYSTEM OF BEACON TRANSMISSION AND RECEPTION 有权
    信标传输和接收的方法和系统

    公开(公告)号:US20100067428A1

    公开(公告)日:2010-03-18

    申请号:US12377642

    申请日:2007-07-12

    IPC分类号: H04B7/14

    CPC分类号: H04W48/08 H04W84/12

    摘要: A system includes a first primary wireless system (120) that communicates over a first range, and a first beaconing device (130) associated with the first primary wireless system (120). The first beaconing device (130) communicates over at least at a second range, wherein the second range is greater than the first range. The first beaconing device listens for beacons (510) from other beaconing devices (130) associated with other primary wireless systems (120) on a plurality of channels over which the other primary systems may operate. After listening for beacons from the other beaconing devices (130) associated with other primary wireless systems, the first beaconing device transmits a first beacon (510) to a wireless device (114) of a secondary wireless system (110) that may communicate over the second range. The first beacon includes data indicating an occupation of a first one of the channels by the first primary wireless system (120).

    摘要翻译: 系统包括在第一范围上通信的第一主要无线系统(120)和与第一主要无线系统(120)相关联的第一信标设备(130)。 第一信标装置(130)至少在第二范围进行通信,其中第二范围大于第一范围。 第一信标设备从其他主要系统可以在其上操作的多个信道上侦听与其他主要无线系统(120)相关联的其他信标设备(130)的信标(510)。 在从与其他主要无线系统相关联的其他信标设备(130)收听信标之后,第一信标设备向第二无线系统(110)的无线设备(114)发送第一信标(510),第二信标可以通过 第二范围。 第一信标包括指示由第一主无线系统(120)占用第一信道的数据。

    INDIVIDUAL INTERLEAVING OF DATA STREAMS FOR MIMO TRANSMISSION
    8.
    发明申请
    INDIVIDUAL INTERLEAVING OF DATA STREAMS FOR MIMO TRANSMISSION 有权
    用于MIMO传输的数据流的个别交互

    公开(公告)号:US20090074091A1

    公开(公告)日:2009-03-19

    申请号:US11916513

    申请日:2006-06-23

    申请人: Monisha Ghosh Pen Li

    发明人: Monisha Ghosh Pen Li

    IPC分类号: H04L27/28

    摘要: The present invention, generally speaking, provides interleavers and methods of interleaving that satisfy the need for backward compatibility while effectively addressing competing design objectives. In accordance with one aspect of the invention, data is transmitted using a number of transmit antennas greater than an expected number of receive antennas. At least one pair of transmit antennas is formed, and multiple second data streams are formed from a first data stream, successive bits in said first data stream being assigned to different ones of said second data streams. Block interleaving of multiple respective ones of said second data streams is individually performed. During successive transmission intervals, the pair of transmit antennas is used to transmit a pair of data symbols taken from different ones of said second data streams, followed by an equivalent transformed pair of data symbols.

    摘要翻译: 本发明一般地提供交织器和交织方法,其满足对向兼容性的需要,同时有效地解决竞争设计目标。 根据本发明的一个方面,使用大于预期数量的接收天线的多个发射天线来发送数据。 形成至少一对发射天线,并且从第一数据流形成多个第二数据流,所述第一数据流中的连续位被分配给不同的所述第二数据流。 分别执行多个相应的所述第二数据流的块交织。 在连续的传输间隔期间,该对发射天线用于发送从不同的所述第二数据流中取出的一对数据符号,随后是等效的变换数据符号对。

    Integer Spreading Rotation Matrices for Qam Constellations and Its Application to Decode-Remodulate-Forward Cooperative Communication Strategy
    9.
    发明申请
    Integer Spreading Rotation Matrices for Qam Constellations and Its Application to Decode-Remodulate-Forward Cooperative Communication Strategy 有权
    整数传播Qam星座的旋转矩阵及其在解码转发协作通信策略中的应用

    公开(公告)号:US20080317168A1

    公开(公告)日:2008-12-25

    申请号:US12096975

    申请日:2006-12-08

    IPC分类号: H04L27/36

    摘要: Diversity techniques are commonly used in wireless communications to combat multi-path fading. Recent interests in ultra-wideband technology focus on multi-band OFDM systems that can explore the high diversity due to the independent frequency bands. To achieve full diversity with high data rate, a system (800), apparatus (500) and method that uses coded modulation with spreading rotation of transmitted signals. A 2×2 integer rotation matrix for QAM signals, 3×3 and 4×4 integer rotation matrices for QAM signals are provided. Compared with the non-regular QAM shape for real rotation matrices, each of these integer rotation matrices makes the regular QAM shape after rotation. The systematic design of these spreading matrices can be used to simplify the receiver structure such as simplified ML, MMSE and ZF, and then reduce their decoding complexity. Further, the present invention achieves cooperative diversity not only from distributed users but also from the signal space diversity of each user. An embodiment is provided for a cooperative system (100) in which different rows of integer rotation matrices are used by a source and relays as a modulation scheme to increase cooperative diversity.

    摘要翻译: 无线通信中通常使用分集技术来对抗多径衰落。 最近对超宽带技术的兴趣集中在可以探索由于独立频带引起的高分集的多频带OFDM系统。 为了实现具有高数据速率的完全分集,使用传输信号的扩展旋转的编码调制的系统(800),装置(500)和方法。 提供了用于QAM信号的2x2整数旋转矩阵,用于QAM信号的3x3和4x4整数旋转矩阵。 与实际旋转矩阵的非规则QAM形状相比,这些整数旋转矩阵中的每一个使旋转后成为正常的QAM形状。 这些扩展矩阵的系统设计可以用于简化接收机结构,如简化的ML,MMSE和ZF,然后降低它们的解码复杂度。 此外,本发明不仅从分布式用户获得协作分集,而且实现了来自每个用户的信号空间分集的协作分集。 提供了一种用于协作系统(100)的实施例,其中由源和中继使用不同行的整数旋转矩阵作为调制方案以增加协作分集。

    System, Apparatus, and Method for Spatial Multiplexing with Symbol Spreading
    10.
    发明申请
    System, Apparatus, and Method for Spatial Multiplexing with Symbol Spreading 有权
    用符号扩展的空间复用的系统,装置和方法

    公开(公告)号:US20080285434A1

    公开(公告)日:2008-11-20

    申请号:US12096435

    申请日:2006-12-05

    IPC分类号: H04J11/00

    摘要: The present invention provides a system (400), device (200, 300), and method (200) for a spatial multiplexing (SMX) transmission scheme combined with symbol spreading and rotation using a pre-determined matrix R, which can greatly improve system performance without requiring additional bandwidth or power consumption under fast Rayleigh flat fading channels or high frequency-selective channels in UWB systems. Because of the lattice-based structure, sphere decoding is employed to reduce the complexity of ML decoding while maintaining the near ML performance. On the other hand, ZF and MMSE receivers can also be used due to the systematic structure at the transmitter.

    摘要翻译: 本发明提供了一种用于使用预定矩阵R与符号扩展和旋转组合的空间复用(SMX)传输方案的系统(400),装置(200,300)和方法(200),其可以极大地改善系统 性能,而不需要UWB系统中快速瑞利平坦衰落信道或高频选择性信道的附加带宽或功耗。 由于基于晶格的结构,采用球体解码来降低ML解码的复杂度,同时保持近ML性能。 另一方面,由于发射机的系统结构,也可以使用ZF和MMSE接收机。