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    A Multiuser Communications System
    2.
    发明申请
    A Multiuser Communications System 审中-公开
    多用户通信系统

    公开(公告)号：US20160204852A1

    公开(公告)日：2016-07-14

    申请号：US14913339

    申请日：2014-08-21

    Applicant: UNIVERSITY OF SOUTH AUSTRALIA

    Inventor： Alexander James Grant ,  Gottfried Lechner ,  Andre Pollok ,  Robert George McKilliam ,  Ingmar Rudiger Land ,  David Victor Lawrie Haley ,  William George Cowley ,  Linda Mary Davis ,  Sorin Adrian Barbulescu ,  John Lawrence Buetefuer ,  Marc Pierre Denis Lavenant

    IPC: H04B7/185 ,  H04W72/04 ,  H04W72/08

    CPC classification number: H04B7/18539 ,  H04B1/7107 ,  H04W72/0446 ,  H04W72/082 ,  H04W88/02

    Abstract: A multiuser communication system comprises multiple transmitters and a multiuser receiver that detects multiple transmissions via iterative soft interference cancellation. An initial acquisition module and single user decoder module are also described. The multiuser receiver acquires and subtracts known users in the residual signal before acquiring new users in the residual signal, which is performed iteratively until no new users are detected or a stopping criterion is met. To aid receiver acquisition, the transmitters insert discrete tones into the transmitted signals. These allow the multiuser receiver to obtain initial estimates of the frequency, time, gain, and/or phase offset for each user. To improve the quality of cancellation the receiver refines estimates of gain, time, frequency and phase offsets for each user after each iteration, and calculates time varying SINR estimates for each user. The multiuser receiver may be satellite based, may be a distributed receiver, or process users in parallel.

    Abstract translation: 多用户通信系统包括多个发射机和通过迭代软干扰消除来检测多个传输的多用户接收机。 还描述了初始采集模块和单用户解码器模块。 多用户接收机在获取剩余信号中的新用户之前，对残留信号中的已知用户进行迭代，获取并减去已知用户，直到不检测到新的用户或满足停止标准为止。 为了帮助接收机采集，发射机将离散音调插入发射信号。 这些允许多用户接收机获得每个用户的频率，时间，增益和/或相位偏移的初始估计。 为了提高取消的质量，接收机在每次迭代之后对每个用户的增益，时间，频率和相位偏移的估计进行精细化，并计算每个用户的时变SINR估计。 多用户接收机可以是基于卫星的，可以是分布式接收机，或并行处理用户。

    COMMUNICATION SYSTEM AND METHOD
    3.
    发明申请
    COMMUNICATION SYSTEM AND METHOD 有权
    通信系统和方法

    公开(公告)号：US20150256247A1

    公开(公告)日：2015-09-10

    申请号：US14430096

    申请日：2013-09-20

    Applicant: UNIVERSITY OF SOUTH AUSTRALIA

    Inventor： David Victor Lawrie Haley ,  John Lawrence Buetefuer ,  Alexander James Grant ,  William George Cowley ,  Gottfried Lechner ,  Ingmar Rudiger Land ,  Robert George McKilliam ,  Andre Pollok ,  Linda Mary Davis ,  Ricky Rocco Luppino ,  Sorin Adrian Barbulescu

    IPC: H04B7/185

    CPC classification number: H04B7/18513 ,  H04B7/185 ,  H04B7/212 ,  H04W40/20 ,  Y02D70/00 ,  Y02D70/164 ,  Y02D70/38 ,  Y02D70/446

    Abstract: A communication system is disclosed. In an embodiment, the communication system includes a user node for receiving data from a remote application program, the data including message data for communication to a central application program operatively associated with the remote application program; plurality of geographically distributed gateway nodes; one or more access nodes for receiving the message data from the user node via a first communications interface, and communicating the message data via a second communications interface to one or more of the plurality of geographically distributed gateway nodes; and a hub for communicating with the one or more of the plurality of geographically distributed gateway nodes to receive the message data for communication to the central application.

    Abstract translation: 公开了通信系统。 在一个实施例中，通信系统包括用于从远程应用程序接收数据的用户节点，该数据包括用于与可操作地与远程应用程序相关联的中央应用程序通信的消息数据; 多个地理分布式网关节点; 一个或多个接入节点，用于经由第一通信接口从所述用户节点接收所述消息数据，以及经由第二通信接口将所述消息数据传送到所述多个地理分布的网关节点中的一个或多个; 以及用于与所述多个地理分布的网关节点中的一个或多个通信的中枢，以接收用于与中央应用通信的消息数据。

    System and method for analog to digital conversion
    4.
    发明授权
    System and method for analog to digital conversion 有权
    用于模数转换的系统和方法

    公开(公告)号：US09362935B2

    公开(公告)日：2016-06-07

    申请号：US14421534

    申请日：2013-08-13

    Applicant: University of South Australia

    Inventor： Ying Chen ,  Andre Pollok ,  David Victor Lawrie Haley ,  Linda Mary Davis ,  Mark Damian McDonnell

    IPC: H03M1/80 ,  H03M1/08 ,  H03M1/18 ,  H03M1/36

    CPC classification number: H03M1/0854 ,  H03M1/188 ,  H03M1/361

    Abstract: Parallel analog to digital converted (ADC) architectures that can be used to replace single path ADC architectures. The parallel ADC architecture can comprise N branches and one ADC per branch. These ADCs can be identical. However each branch can have a different path adjustments applied to the ADC. The path adjustments can be biases and/or gains and each ADC receives a different combination of biases and/or gain to generate multiple adjusted input signals. These are then combined to generate a quantized output signal. Using these parallel architectures a range of weighting and offset combining schemes can be employed to achieve improvements in signal to noise ratio and to reduce the impact of clipping as compared to a single path ADC architecture.

    Abstract translation: 并行模数转换（ADC）架构，可用于替代单路ADC架构。 并行ADC架构可以包括每个分支的N个分支和一个ADC。 这些ADC可以相同。 然而，每个分支可以具有应用于ADC的不同路径调整。 路径调整可以是偏置和/或增益，并且每个ADC接收偏差和/或增益的不同组合以产生多个经调整的输入信号。 然后将它们组合以产生量化的输出信号。 使用这些并行架构，可以采用一系列加权和偏移组合方案来实现信噪比的提高，并减少与单路ADC结构相比的限幅的影响。

    Channel allocation in a communication system
    8.
    发明授权
    Channel allocation in a communication system 有权

    公开(公告)号：US09763253B2

    公开(公告)日：2017-09-12

    申请号：US14421526

    申请日：2013-08-14

    Applicant: University of South Australia

    Inventor： Alexander James Grant ,  David Victor Lawrie Haley ,  Robert George McKilliam ,  William George Cowley ,  Linda Mary Davis

    IPC: H04W72/04 ,  H04B7/185 ,  H04B7/212 ,  H04W64/00 ,  H04W48/04 ,  H04W84/18

    CPC classification number: H04W72/048 ,  H04B7/18539 ,  H04B7/2121 ,  H04W48/04 ,  H04W64/00 ,  H04W72/04 ,  H04W72/0446 ,  H04W84/18

    Abstract: Methods and systems are described which provide solutions for determining how to allocate terminals to slots in order to maximize communication system performance in the case where there is no feedback channel between a multiuser satellite receiver and terminals within the field of view. Terminals operate independently of each other and choose transmission slots based upon the geographic position of the terminal. Terminals can be programmed with a slot selector to choose slots according to some deterministic or non deterministic function of the current position. A slot plan database may be used to assist in efficient slot selection. Regular and irregular grid based allocation methods are described, that reduce the likelihood that too many terminals transmit using the same slot within the field of view. Satellite induced Doppler effects can be utilized be further increase slot re-use and to improve allocation of slots so that the receiver sees an approximately uniform distribution of frequencies over the frequency band to improve system throughput. The approaches described herein greatly reduce or eliminate the probability of failure at the receiver, which has numerous implementation advantages such as reduced cost, complexity, and power consumption.

    System and Method for Analog to Digital Conversion
    9.
    发明申请
    System and Method for Analog to Digital Conversion 有权
    用于模数转换的系统和方法

    公开(公告)号：US20150188556A1

    公开(公告)日：2015-07-02

    申请号：US14421534

    申请日：2013-08-13

    Applicant: University of South Australia

    Inventor： Ying Chen ,  Andre Pollok ,  David Victor Lawrie Haley ,  Linda Mary Davis ,  Mark Damian McDonnell

    IPC: H03M1/08 ,  H03M1/36

    CPC classification number: H03M1/0854 ,  H03M1/188 ,  H03M1/361

    Abstract: Parallel analog to digital converted (ADC) architectures that can be used to replace single path ADC architectures. The parallel ADC architecture can comprise N branches and one ADC per branch. These ADCs can be identical. However each branch can have a different path adjustments applied to the ADC. The path adjustments can be biases and/or gains and each ADC receives a different combination of biases and/or gain to generate multiple adjusted input signals. These are then combined to generate a quantised output signal. Using these parallel architectures a range of weighting and offset combining schemes can be employed to achieve improvements in signal to noise ratio and to reduce the impact of clipping as compared to a single path ADC architecture.

    Abstract translation: 并行模数转换（ADC）架构，可用于替代单路ADC架构。 并行ADC架构可以包括每个分支的N个分支和一个ADC。 这些ADC可以相同。 然而，每个分支可以具有应用于ADC的不同路径调整。 路径调整可以是偏置和/或增益，并且每个ADC接收偏差和/或增益的不同组合以产生多个经调整的输入信号。 然后将它们组合以产生量化的输出信号。 使用这些并行架构，可以采用一系列加权和偏移组合方案来实现信噪比的提高，并减少与单路ADC结构相比的限幅的影响。

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