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    LOWER COMPLEXITY LAYERED MODULATION SIGNAL PROCESSOR
    1.
    发明申请
    LOWER COMPLEXITY LAYERED MODULATION SIGNAL PROCESSOR 审中-公开
    低复杂度层状调制信号处理器

    公开(公告)号：WO2004040403A3

    公开(公告)日：2004-07-22

    申请号：PCT/US0332264

    申请日：2003-10-10

    Applicant: DIRECTV GROUP INC ,  CHEN ERNEST C ,  WANG WEIZHENG ,  ZHOU GUANGCAI ,  LIN TUNG-SHENG ,  SANTORU JOSEPH

    Inventor： CHEN ERNEST C ,  WANG WEIZHENG ,  ZHOU GUANGCAI ,  LIN TUNG-SHENG ,  SANTORU JOSEPH

    IPC: H03F1/32 ,  H03F3/58 ,  H04B1/707 ,  H04B7/185 ,  H04B14/04 ,  H04B17/00 ,  H04L20060101 ,  H04L27/34 ,  H04L27/36 ,  H04L29/06 ,  H04N5/21

    CPC classification number: H04L27/3488 ,  H04B7/18515 ,  H04B17/318 ,  H04L1/20 ,  H04L27/183 ,  H04L27/227 ,  H04L27/366 ,  H04L2027/0061

    Abstract: A method and apparatus for transmitting and receiving a coded signal having an upper layer signal (130) and a lower layer signal (1312) is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signal, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer signal and transmitting the lower layer signal. The apparatus comprises an encoder (1301), for encoding a combined upper layer signal and lower layer signal, a delay communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter (1314), communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter (13, 16), communicatively coupled to the second modulator.

    Abstract translation: 公开了一种用于发送和接收具有上层信号（130）和下层信号（1312）的编码信号的方法和装置。 该方法包括以下步骤：组合上层信号和下层信号，编码组合上层信号和下层信号，延迟上层信号，调制延迟的上层信号，调制下层信号，发送延迟的 上层信号并传输下层信号。 该装置包括编码器（1301），用于对组合的上层信号和下层信号进行编码，通信地耦合到编码器的延迟用于延迟上层信号的第一调制器，用于调制上层信号的第二调制器 ，用于调制所述下层信号;通信地耦合到所述第一调制器的用于发送所述延迟的上层信号的发射机（1314）以及通信地耦合到所述第二调制器的第二发射机（13,16）。

    METHOD AND APPARATUS FOR MINIMIZING CO-CHANNEL INTERFERENCE
    6.
    发明申请
    METHOD AND APPARATUS FOR MINIMIZING CO-CHANNEL INTERFERENCE 审中-公开
    用于最小化共通道干扰的方法和装置

    公开(公告)号：WO2005101840A3

    公开(公告)日：2006-02-23

    申请号：PCT/US2005012424

    申请日：2005-04-11

    Applicant: DIRECTV GROUP INC

    Inventor： LEE LIN-NAN ,  SUN FENG-WEN ,  VON ANCKEN ADAM ,  SANTORU JOSEPH A ,  CHEN ERNEST C ,  MAITRA SHAMIK ,  LAI DENNIS ,  ZHOU GUANGCAI ,  LIN TUNG-SHENG

    IPC: H04B7/185 ,  H04H1/00 ,  H04H20/51 ,  H04J13/00 ,  H04L25/03 ,  H04N5/21 ,  H04B1/69

    CPC classification number: H04N5/211 ,  H04B7/18513 ,  H04H20/51 ,  H04L25/03866

    Abstract: An approach is provided for minimizing co-channel interference in a communication system (100) is disclosed. A header (401) of a first frame is scrambled based on a first unique word (411, 413). A header (401) of a second frame is scrambled based on a second unique word (411, 413). The first frame including the corresponding scrambled header (401) and the second frame including the corresponding scrambled header (401) are transmitted, respectively, over adjacent co-channels of the communication system (100). Each of the frames further includes a payload (403) and a pilot block (405). The payload (403) and the pilot black (405) of the first frame are scrambled based on a first scrambling sequence. The payload (403) and the pilot black (405) of the second frame are scrambled based on a second scrambling sequence. The above arrangement is particularly suited to a digital satellite broadcast and interactive system (100).

    Abstract translation: 公开了一种用于最小化通信系统（100）中的同信道干扰的方法。 基于第一唯一字（411,413）对第一帧的头（401）进行加扰。 基于第二唯一字（411,413）对第二帧的报头（401）进行加扰。 分别在通信系统（100）的相邻共同信道上发送包括对应的加扰报头（401）和包括对应的加扰报头（401）的第二帧的第一帧。 每个帧还包括有效载荷（403）和导频块（405）。 基于第一加扰序列对第一帧的有效载荷（403）和导频黑（405）进行加扰。 基于第二加扰序列对第二帧的有效负载（403）和导频黑（405）进行加扰。 上述布置特别适用于数字卫星广播和交互式系统（100）。

    OPTIMIZED UPLINK EFFICIENCIES FOR TRANSMISSION OF SATELLITE DATA
    7.
    发明申请
    OPTIMIZED UPLINK EFFICIENCIES FOR TRANSMISSION OF SATELLITE DATA 审中-公开
    优化传输卫星数据的上网效率

    公开(公告)号：WO2008048530B1

    公开(公告)日：2008-10-30

    申请号：PCT/US2007021955

    申请日：2007-10-15

    Applicant: DIRECTV GROUP INC ,  ZHOU GUANGCAI ,  LIN TUNG-SHENG ,  LAI DENNIS ,  SANTORU JOSEPH ,  CHEN ERNEST C ,  MAITRA SHAMIK ,  COMEAUX CECILIA

    Inventor： ZHOU GUANGCAI ,  LIN TUNG-SHENG ,  LAI DENNIS ,  SANTORU JOSEPH ,  CHEN ERNEST C ,  MAITRA SHAMIK ,  COMEAUX CECILIA

    IPC: H04B17/00 ,  H03F1/32

    CPC classification number: H04B17/0085 ,  H03F1/32 ,  H04B17/15

    Abstract: Systems and methods for characterizing amplifiers. A system for characterizing an amplifier in accordance with the present invention comprises a Gaussian signal source for generating a signal in the frequency domain, a notch filter, coupled to the Gaussian Noise source, wherein the notch filter has a notch at a specified frequency and a frequency bandwidth, the frequency bandwidth encompassing the specified frequency, an Inverse Fast Fourier Transform device, coupled to an output of the notch filter, a normalization device, coupled to the Inverse Fast Fourier Transform device, an amplifier under test, coupled to the normalization device, for amplifying the signal generated by the Gaussian signal source, and a measurement device, coupled to an output of the amplifier, for measuring a power output of the amplifier in the frequency bandwidth and a noise output at the specified notch frequency, and for calculating the ratio between the power output and the noise output.

    Abstract translation: 表征放大器的系统和方法。 用于表征根据本发明的放大器的系统包括用于产生频域中的信号的高斯信号源，耦合到高斯噪声源的陷波滤波器，其中陷波滤波器具有指定频率的陷波和 频率带宽，包含指定频率的频率带宽，耦合到陷波滤波器的输出的反相快速傅立叶变换装置，耦合到快速傅立叶逆变换装置的归一化装置，被测放大器，耦合到归一化装置 ，用于放大由高斯信号源产生的信号，以及耦合到放大器的输出的测量装置，用于测量放大器在频率带宽中的功率输出和在指定陷波频率下的噪声输出，并用于计算 功率输出与噪声输出之间的比例。

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