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    Sample generation method and system for digital simulation processes
    31.
    发明授权
    Sample generation method and system for digital simulation processes 有权
    数字模拟过程的样本生成方法和系统

    公开(公告)号：US08332449B2

    公开(公告)日：2012-12-11

    申请号：US12275498

    申请日：2008-11-21

    申请人： Ernest C. Chen ,  Paul R. Anderson ,  Joseph Santoru ,  Tammy G. Liu

    发明人： Ernest C. Chen ,  Paul R. Anderson ,  Joseph Santoru ,  Tammy G. Liu

    IPC分类号： G06F1/02

    CPC分类号： G06F1/02 ,  G06F7/58 ,  G06F2101/14

    摘要： A method for generating a set of random numbers with statistics represented by a cumulative density function includes generating a set of uniformly spaced samples between an upper limit and a lower limit. Each of the uniformly spaced samples are then mapped to a corresponding value on a cumulative density function curve. The set of uniformly spaced samples are then scrambled to randomize the samples. Companding may also be incorporated in the sample generation process.

    摘要翻译： 用累积密度函数表示的统计量生成一组随机数的方法包括在上限和下限之间生成一组均匀间隔的样本。 然后将每个均匀间隔的样本映射到累积密度函数曲线上的相应值。 然后对该组均匀间隔的样本进行加扰以使样本随机化。 压实也可以并入样品生成过程中。

    Lower complexity layered modulation signal processor
    35.
    发明授权
    Lower complexity layered modulation signal processor 失效
    较低复杂度的分层调制信号处理器

    公开(公告)号：US07706466B2

    公开(公告)日：2010-04-27

    申请号：US12329456

    申请日：2008-12-05

    申请人： Ernest C. Chen ,  Weizheng W. Wang ,  Guangcai Zhou ,  Tung-Sheng Lin ,  Joseph Santoru

    发明人： Ernest C. Chen ,  Weizheng W. Wang ,  Guangcai Zhou ,  Tung-Sheng Lin ,  Joseph Santoru

    IPC分类号： H04L27/00

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

    摘要： A method and apparatus for transmitting and receiving a coded signal having an upper layer signal and a lower layer signal 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, 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 delayed upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter, communicatively coupled to the second modulator.

    摘要翻译： 公开了一种用于发送和接收具有上层信号和下层信号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。 该装置包括用于编码组合的上层信号和下层信号的编码器，通信地耦合到编码器的用于延迟上层信号的延迟，用于调制延迟的上层信号的第一调制器，第二调制器， 用于调制下层信号的发射机，通信地耦合到第一调制器，用于发送延迟的上层信号;以及第二发射机，通信地耦合到第二调制器。

    Hierarchical 8PSK performance
    36.
    发明授权
    Hierarchical 8PSK performance 有权
    分层8PSK性能

    公开(公告)号：US07577213B2

    公开(公告)日：2009-08-18

    申请号：US12176533

    申请日：2008-07-21

    申请人： Ernest C. Chen ,  Joseph Santoru

    发明人： Ernest C. Chen ,  Joseph Santoru

    IPC分类号： H04L27/00

    CPC分类号： H04L1/20 ,  H04L1/208 ,  H04L27/183 ,  H04L2001/0098

    摘要： A method and receiver systems for demodulating and decoding a hierarchically modulated signal, e.g. an 8PSK signal, are disclosed. An exemplary method includes demodulating and processing (502) the hierarchically modulated signal (202) to produce symbols (212) from the first modulation at the first hierarchical level, applying information (504) from a plurality of the symbols from the first modulation at the first hierarchical level in subtracting (214) from the demodulated hierarchically modulated signal to obtain the second modulation at the second hierarchical level and processing (506) the second modulation at the second hierarchical level to produce second symbols (222) from the demodulated second signal. The hierarchically modulated signal comprises a non-uniform 8PSK signal. Applying the information from the plurality of the symbols from the first modulation can be achieved by applying the symbols after error correction. A decision-directed demodulation of the first modulation can also be used to further improve performance.

    摘要翻译： 用于解调和解码分层调制信号的方法和接收机系统，例如， 8PSK信号。 一种示例性方法包括解调和处理（502）分级调制信号（202）以从第一层级的第一调制产生符号（212），从来自第一调制的多个符号应用信息（504） 从解调的分层调制信号中减去（214）第一层级，以获得第二层级的第二调制，并处理（506）第二层级的第二调制，以从解调的第二信号产生第二符号（222）。 分级调制信号包括不均匀的8PSK信号。 可以通过在纠错后应用符号来实现来自第一调制的多个符号的信息。 也可以使用第一调制的决策导向解调来进一步提高性能。

    Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers
    38.
    发明授权
    Preprocessing signal layers in a layered modulation digital signal system to use legacy receivers 有权
    在分层调制数字信号系统中预处理信号层以使用传统接收机

    公开(公告)号：US07426243B2

    公开(公告)日：2008-09-16

    申请号：US11619173

    申请日：2007-01-02

    申请人： Ernest C. Chen ,  Tiffany S. Furuya ,  Philip R. Hilmes ,  Joseph Santoru

    发明人： Ernest C. Chen ,  Tiffany S. Furuya ,  Philip R. Hilmes ,  Joseph Santoru

    IPC分类号： H03K9/00

    CPC分类号： H04L27/3488

    摘要： Systems and methods for receiving non-coherent layered modulation signals are presented. An exemplary apparatus comprises a tuner for receiving a layered signal and producing a layered in-phase signal and a layered quadrature signal therefrom, an analog-to-digital converter for digitizing the layered in-phase signal and the layered quadrature signal, a processor for decoding the layered in-phase signal and the layered quadrature signal to produce a single layer in-phase signal and a single layer quadrature signal, a digital-to-analog encoder for converting the single layer in-phase signal and the single layer quadrature signal to a single layer in-phase analog signal and a single layer quadrature analog signal and a modulator for modulating the single layer in-phase analog signal and the single layer quadrature analog signal to produce a single layer signal.

    摘要翻译： 提出了用于接收非相干分层调制信号的系统和方法。 示例性装置包括用于接收分层信号并产生分层同相信号和分层正交信号的调谐器，用于数字化分层同相信号和分层正交信号的模数转换器，用于 解码分层同相信号和分层正交信号以产生单层同相信号和单层正交信号，用于转换单层同相信号和单层正交信号的数模转换编码器 到单层同相模拟信号和单层正交模拟信号，以及用于调制单层同相模拟信号和单层正交模拟信号的调制器，以产生单层信号。

    Optimization technique for layered modulation
    40.
    发明授权
    Optimization technique for layered modulation 有权
    分层调制优化技术

    公开(公告)号：US07184489B2

    公开(公告)日：2007-02-27

    申请号：US10693140

    申请日：2003-10-24

    申请人： Weizheng Wang ,  Guangcai Zhou ,  Tung-Sheng Lin ,  Ernest C. Chen ,  Joseph Santoru ,  William C. Lindsey

    发明人： Weizheng Wang ,  Guangcai Zhou ,  Tung-Sheng Lin ,  Ernest C. Chen ,  Joseph Santoru ,  William C. Lindsey

    IPC分类号： H04L27/04

    CPC分类号： H04L1/20 ,  H04L1/208 ,  H04L27/183 ,  H04W52/42

    摘要： A method and apparatus for optimizing a system for transmitting a layered modulated signal is disclosed. The method comprises the steps of defining the system in terms of a set of system parameters, including an optimal power separation S between a power of a first modulation layer and a power of a second modulation layer and a required system carrier-to-noise ratio (CNRS), determining an optimal power separation S to minimize the error rate of a lower layer modulated signal BERL, and selecting the remaining system parameters in the set of system parameters using the determined optimal power separation S.

    摘要翻译： 公开了一种用于优化用于发送分层调制信号的系统的方法和装置。 该方法包括以下步骤：根据一组系统参数定义系统，包括第一调制层的功率和第二调制层的功率之间的最佳功率分离S和所需的系统载波比 （CNR S S），确定最佳功率分离S以最小化下层调制信号BERLL的错误率，并且选择系统中的剩余系统参数 参数使用确定的最佳功率分离S.