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    EXPURGATED PULSE POSITION MODULATION FOR COMMUNICATION
    2.
    发明申请
    EXPURGATED PULSE POSITION MODULATION FOR COMMUNICATION 审中-公开

    公开(公告)号：US20170302485A1

    公开(公告)日：2017-10-19

    申请号：US15417950

    申请日：2017-01-27

    申请人： Maite Brandt-Pearce ,  Mohammad Noshad

    发明人： Maite Brandt-Pearce ,  Mohammad Noshad

    IPC分类号： H04L25/49 ,  H04L1/00 ,  H04L1/06 ,  H04L25/03 ,  H04B10/524

    CPC分类号： H04L25/4902 ,  H04B10/116 ,  H04B10/524 ,  H04L1/0071 ,  H04L1/0668 ,  H04L25/03006 ,  H04L2025/0335 ,  H04L2025/03789

    摘要： An expurgated pulse position modulation (EPPM) technique can be used to encode information for wireless transmission. Such an EPPM technique can be compatible with a simple receiver architecture, such as including a shift register and pulse position modulation (PPM) decoder. A multi-level EPPM (MEPPM) approach can increase the available symbols in the modulation constellation and can be used to accommodate multiple users or devices concurrently. Interleaving techniques can be used such as to reduce inter-symbol interference. An optical transmitter and an optical receiver can be used, such as including using energy in a visible range of frequencies. In an example, an optical source such as including one or more light emitting diodes can provide visible light for illumination, and the EPPM technique can include using codewords specified to provide a desired dimming level when such codewords are used to intensity modulate the optical source, without perceptible flicker.

    System and method for communication using orbital angular momentum with multiple layer overlay modulation
    7.
    发明授权
    System and method for communication using orbital angular momentum with multiple layer overlay modulation 有权
    使用具有多层覆盖调制的轨道角动量进行通信的系统和方法

    公开(公告)号：US09331875B2

    公开(公告)日：2016-05-03

    申请号：US14323082

    申请日：2014-07-03

    申请人： Solyman Ashrafi ,  Roger Linquist ,  Nima Ashrafi

    发明人： Solyman Ashrafi ,  Roger Linquist ,  Nima Ashrafi

    IPC分类号： H04J14/06 ,  H04L25/03 ,  H04L27/36 ,  H04B10/516 ,  H04L27/34

    CPC分类号： H04B10/2575 ,  H04B10/11 ,  H04B10/2581 ,  H04B10/50 ,  H04B10/5161 ,  H04B10/532 ,  H04B10/541 ,  H04J14/00 ,  H04J14/06 ,  H04L9/0858 ,  H04L9/3093 ,  H04L25/03006 ,  H04L25/03343 ,  H04L27/3405 ,  H04L27/362 ,  H04L27/366 ,  H04L63/06 ,  H04L2025/0335 ,  H04L2025/0342 ,  H04W12/04

    摘要： A communications system includes a transmitter for transmitting an optical signal including a plurality of data streams over an optical communications link. The transmitter includes first signal processing circuitry for processing each of the plurality of input data streams to generate a parallel pair of data streams including an in-phase stream (I) and a quadrature-phase stream (Q) for each of the plurality of input data streams. The first signal processing circuitry modulates a first and second parallel pair of data streams with a selected one of at least three mutually orthogonal functions at a first and second signal widths, respectively, to generate a plurality of first data sub-layers and a plurality of second data sub-layers and generates a plurality of composite data stream by overlaying the first data subs-layers with the second data sub-layers at a preconfigured overlay offset. Second signal processing circuitry places the plurality of composite data streams on a wavelength of the optical communications link. Each of the plurality of composite data streams having a different orbital angular momentum associated therewith to enable transmission of each of the plurality of composite data streams on the wavelength at a same time.

    摘要翻译： 通信系统包括用于通过光通信链路发送包括多个数据流的光信号的发射机。 所述发射机包括用于处理所述多个输入数据流中的每一个的第一信号处理电路，以产生包括所述多个输入中的每一个的同相流（I）和正交相流（Q）的并行数据流对 数据流。 第一信号处理电路分别以第一和第二信号宽度以至少三个相互正交的功能中的选定的一个调制第一和第二并行数据流对，以产生多个第一数据子层和多个第一数据子层 第二数据子层，并且通过在预配置的覆盖偏移量处将第一数据子层与第二数据子层叠加来生成多个复合数据流。 第二信号处理电路将多个复合数据流放置在光通信链路的波长上。 多个复合数据流中的每一个具有与其相关联的不同的轨道角动量，以使得能够同时在波长上传输多个复合数据流中的每一个。

    SYSTEM AND METHOD FOR COMMUNICATION USING ORBITAL ANGULAR MOMENTUM WITH MULTIPLE LAYER OVERLAY MODULATION
    9.
    发明申请
    SYSTEM AND METHOD FOR COMMUNICATION USING ORBITAL ANGULAR MOMENTUM WITH MULTIPLE LAYER OVERLAY MODULATION 有权
    使用具有多层覆盖调制的ORBITAL ANGULAR MOMENTUM进行通信的系统和方法

    公开(公告)号：US20150288542A1

    公开(公告)日：2015-10-08

    申请号：US14729416

    申请日：2015-06-03

    申请人： SOLYMAN ASHRAFI ,  ROGER LINQUIST ,  NIMA ASHRAFI

    发明人： SOLYMAN ASHRAFI ,  ROGER LINQUIST ,  NIMA ASHRAFI

    IPC分类号： H04L25/03 ,  H04L27/34

    CPC分类号： H04B10/2575 ,  H04B10/11 ,  H04B10/2581 ,  H04B10/50 ,  H04B10/5161 ,  H04B10/532 ,  H04B10/541 ,  H04J14/00 ,  H04J14/06 ,  H04L9/0858 ,  H04L9/3093 ,  H04L25/03006 ,  H04L25/03343 ,  H04L27/3405 ,  H04L27/362 ,  H04L27/366 ,  H04L63/06 ,  H04L2025/0335 ,  H04L2025/0342 ,  H04W12/04

    摘要： A method for transmitting a plurality of input streams from a transmitting unit to a receiving unit receives the plurality of input data streams and each of the plurality of input data streams are processed to generate a parallel pair of data streams including an in-phase stream (I) and a quadrature-phase stream (Q) for each of the plurality of input data streams. A first and second parallel pair of data streams are modulated with a selected one of at least three mutually orthogonal functions at a first and second signal widths, respectively, using a predefined modulation process to generate a plurality of first data sub-layers and a plurality of second data sub-layers. A plurality of composite data stream are generated by overlaying the first data subs-layers with the second data sub-layers at a preconfigured overlay offset. The plurality of composite data streams are overlapped by a predetermined overlap amount and placed on a wavelength of a communications link. Intersymbol interference is controlled between the plurality of composite data streams responsive to the predefined modulation process used to create the first and second data sub-layers.

    摘要翻译： 一种用于将多个输入流从发送单元发送到接收单元的方法，接收多个输入数据流，并且对多个输入数据流中的每一个进行处理以产生并行的数据流对，包括同相流 I）和用于多个输入数据流中的每一个的正交相流（Q）。 使用预定义的调制过程分别以第一和第二信号宽度的至少三个相互正交函数中的选定的一个调制第一和第二并行数据流对，以生成多个第一数据子层和多个第一数据子层 的第二数据子层。 通过将第一数据子层与第二数据子层叠加在预先配置的覆盖偏移上来生成多个复合数据流。 多个复合数据流以预定的重叠量重叠并放置在通信链路的波长上。 响应于用于创建第一和第二数据子层的预定调制过程，在多个复合数据流之间控制符号间干扰。