公开(公告)号：US20130094618A1

公开(公告)日：2013-04-18

申请号：US13705527

申请日：2012-12-05

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER

IPC: H04L27/00

CPC classification number: H04L27/00 ,  H04L27/183 ,  H04L27/2604

Abstract: A communication system utilizing a hierarchically modulated signal and method thereof are provided, wherein a receiver system is configured to receive a hierarchically modulated signal. The receiver system includes a receiver device configured to receive the hierarchically modulated signal, which is a function of a time domain, and including a high priority data stream that has a single carrier type modulation, and a low priority data stream having data bits that are spread over a plurality of data symbols of a high priority data modulation. The receiver system further includes a low priority processor device, which includes an OFDM decoder configured to convert the low priority data stream of the hierarchically modulated signal that is a function of the time domain to be a function of a frequency domain by utilizing a FFT, such that an output is emitted that is representative of the low priority data stream.

Abstract translation: 提供一种利用分层调制信号的通信系统及其方法，其中接收机系统被配置为接收分层调制信号。 接收机系统包括被配置为接收作为时域的函数的分层调制信号的接收机设备，并且包括具有单载波类型调制的高优先级数据流和具有数据比特的低优先级数据流 扩展到高优先级数据调制的多个数据符号。 接收机系统还包括低优先级处理器设备，其包括OFDM解码器，其被配置为通过利用FFT将作为时域的函数的作为时域的函数的分层调制信号的低优先级数据流转换成频域的函数， 使得发出代表低优先级数据流的输出。

公开(公告)号：US20140227990A1

公开(公告)日：2014-08-14

申请号：US14193100

申请日：2014-02-28

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER

IPC: H04W52/02

CPC classification number: H04W52/0216 ,  G07C5/008 ,  G07C9/00182 ,  H04B1/1615 ,  H04W52/0219

Abstract: A communication system configured to communicate receiver-specific information from a transmitter to a plurality of receivers. Each of the receivers is assigned to one of a plurality of groups based on a group identification value stored in each receiver. A first receiver group is configured to operate during a first information-expected time interval. The first information-expected time interval is determined based on a reception time of a time-reference signal and a first group identification value. A second receiver group is configured to operate during a second information-expected time interval distinct from the first information-expected time interval. The second information-expected time interval is determined based on the reception time of the time-reference signal and a second group identification value.

Abstract translation: 一种通信系统，被配置为将接收机特定信息从发射机传送到多个接收机。 基于存储在每个接收机中的组标识值，将每个接收机分配给多个组中的一个。 第一接收器组被配置为在第一信息预期时间间隔期间操作。 基于时间参考信号和第一组识别值的接收时间来确定第一信息预期时间间隔。 第二接收机组被配置为在与第一信息预期时间间隔不同的第二信息预期时间间隔内操作。 基于时间参考信号的接收时间和第二组识别值来确定第二信息预期时间间隔。

公开(公告)号：US20140146921A1

公开(公告)日：2014-05-29

申请号：US13688542

申请日：2012-11-29

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER ,  ERIC A. DiBIASO ,  ROGER A. McDANNEL ,  MICHAEL L. HIATT

IPC: H04B7/08 ,  H04L7/00

CPC classification number: H04B7/0814 ,  H04B7/0811 ,  H04B7/10 ,  H04B7/12 ,  H04B7/18541 ,  H04B7/2041 ,  H04L7/0079

Abstract: A terrestrial receiver recovers universal services in a satellite radio transmission system including discrete signal sources producing overlapping spot beam loci within a coverage area, wherein the signals forming the beams each contain repeating time aligned universal services having a master synchronizing frame, at least one common channel, and at least one spot specific channel with differing frequency and/or polarization. The receiver switches among antenna elements. A portion of antenna elements receive a transmitted signal, including a plurality of sub-channels that are transmitted in predetermined time intervals. A switching device switches among single antenna elements to receive the transmitted signal. A controller commands the switching device to select each of the antenna elements separately in predetermined periods of time based upon the predetermined time intervals of each of the master synchronizing frames. A power level of the transmitted signal is determined during the predetermined time intervals.

Abstract translation: 地面接收机恢复卫星无线电传输系统中的通用业务，包括在覆盖区域内产生重叠点波束位置的离散信号源，其中形成波束的信号各自包含具有主同步帧的重复时间对准通用业务，至少一个公共信道 ，以及具有不同频率和/或极化的至少一个特定频道。 接收器在天线元件之间切换。 天线元件的一部分接收发射信号，包括以预定时间间隔发送的多个子信道。 开关装置在单个天线元件之间切换以接收所发送的信号。 控制器命令交换设备基于每个主同步帧的预定时间间隔在预定时间段内分别选择每个天线元件。 在预定时间间隔期间确定发送信号的功率电平。

公开(公告)号：US20140328439A1

公开(公告)日：2014-11-06

申请号：US13874506

申请日：2013-05-01

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER

IPC: H04L27/26

CPC classification number: H04L27/2607 ,  H04L5/0007 ,  H04L27/26 ,  H04L27/265

Abstract: A method to decode an orthogonal frequency-division multiplex (OFDM) signal data block that includes symbol-data in a data interval, repeated-data in a cyclic-prefix (CP) guard interval, and noise. The signal is often called a CP-OFDM signal. The method includes determining a first data set based on data samples taken during a first time window of a data block. The method also includes determining a second data set based on data samples taken during a second time window of the data block, wherein the second time window is selected so that the second data set includes repeated-data not present in the first data set. The method also includes combining the first data set and the second data set in a manner effective to increase a signal-to-noise ratio of the signal. The combining process increases signal data energy more than noise data energy.

Abstract translation: 一种在数据间隔中包括符号数据的正交频分复用（OFDM）信号数据块，循环前缀（CP）保护间隔中的重复数据和噪声）的解码方法。 信号通常称为CP-OFDM信号。 该方法包括基于在数据块的第一时间窗口期间采集的数据样本来确定第一数据集。 该方法还包括基于在数据块的第二时间窗口期间采集的数据样本来确定第二数据集，其中选择第二时间窗口，使得第二数据集包括不存在于第一数据集中的重复数据。 该方法还包括以有效增加信号的信噪比的方式组合第一数据组和第二数据组。 组合过程比噪声数据能量增加信号数据能量。

公开(公告)号：US20140286453A1

公开(公告)日：2014-09-25

申请号：US13846983

申请日：2013-03-19

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： GLENN A. WALKER ,  ERIC A. DIBIASO

IPC: H04H20/74

CPC classification number: H04H20/74 ,  H04B7/18515 ,  H04B7/18523 ,  H04H40/90

Abstract: A satellite communication system using hierarchical modulation to transmit a plurality of modulated signals to sub-regions within a region. Each modulated signal includes high priority content and low priority content. The system includes a satellite equipped with a plurality of satellite transmitters coupled to a plurality of antenna elements, e.g. a phased array of antenna elements. The antenna elements are utilized selectively to direct a modulated signal from a satellite transmitter to a distinct sub-region. The satellite transmitters and antenna also cooperate to broadcast the high-priority content to the region such that a ground receiver traveling from a first sub-region to an adjacent second sub-region adjacent will not experience a loss of high-priority content. First low-priority content of a first modulated signal directed to the first sub-region is independent of second low-priority content of a second modulated signal directed to the second sub-region.

Abstract translation: 一种使用分层调制以将多个调制信号发射到区域内的子区域的卫星通信系统。 每个调制信号包括高优先级内容和低优先级内容。 该系统包括配备有耦合到多个天线元件的多个卫星发射机的卫星，例如。 天线元件的相控阵列。 天线元件被选择性地用于将调制信号从卫星发射机引导到不同的子区域。 卫星发射机和天线还协同地向该区域广播高优先级内容，使得从第一子区域行进到相邻的相邻第二子区域的接地接收机将不会经历高优先级内容的丢失。 定向到第一子区域的第一调制信号的第一低优先级内容与定向到第二子区域的第二调制信号的第二低优先级内容无关。