公开(公告)号：WO2014089634A1

公开(公告)日：2014-06-19

申请号：PCT/AU2013/001464

申请日：2013-12-13

Applicant: UNIVERSITY OF SOUTH AUSTRALIA

Inventor： COWLEY, William George ,  MCKILLIAM, Robert George ,  POLLOK, Andre

IPC: H04L27/18 ,  H04L27/22 ,  H04B10/556

CPC classification number: H04L27/2271 ,  H04L5/006 ,  H04L27/18 ,  H04L27/2275 ,  H04L27/2332 ,  H04L27/38 ,  H04L2025/03401 ,  H04L2025/03649

Abstract: A least squares estimator of carrier phase and amplitude in a receiver in a communication system using a phase shift keying modulation scheme that uses both known pilot symbols and unknown data symbols is described. That is, the method exploits knowledge of pilot symbols in addition to the unknown data symbols to estimate carrier phase and amplitude. Further, an efficient recursion based estimation method is described that only requires O(L . log L ) arithmetic operations where L is the number of received signals. This method uses the M -Ary rounded phase offsets to sort the data symbols and this sorted order is used to recursively calculate candidate values in an optimisation process. Simulation results show that the- estimation methods Using data and pilot symbols outperform estimation methods using only data symbols (ie non-coherent detection methods). Further, the system can be used for systems using multiple M -ary phase shift keying digital modulation schemes.

Abstract translation: 描述使用使用已知导频符号和未知数据符号的相移键控调制方案的通信系统中的接收机中的载波相位和幅度的最小二乘估计器。 也就是说，除了未知数据符号之外，该方法利用导频符号的知识来估计载波相位和幅度。 此外，描述了仅需要O（L·log L）算术运算的有效的基于递归的估计方法，其中L是接收信号的数量。 该方法使用M-Ary舍入相位偏移对数据符号进行排序，并且该排序顺序用于在优化过程中递归计算候选值。 仿真结果表明，使用数据和导频符号的估计方法优于仅使用数据符号的估计方法（即非相干检测方法）。 此外，该系统可以用于使用多个M相移键控数字调制方案的系统。

公开(公告)号：WO2014043760A1

公开(公告)日：2014-03-27

申请号：PCT/AU2013/001078

申请日：2013-09-20

Applicant: UNIVERSITY OF SOUTH AUSTRALIA

Inventor： HALEY, David Victor Lawrie ,  BUETEFUER, John Lawrence ,  GRANT, Alexander James ,  COWLEY, William George ,  LECHNER, Gottfried ,  LAND, Ingmar Rudiger ,  MCKILLIAM, Robert George ,  POLLOK, Andre ,  DAVIS, Linda Mary ,  LUPPINO, Ricky Rocco ,  BARBULESCU, Sorin Adrian

IPC: H04W40/04 ,  H04B7/204

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。

公开(公告)号：WO2014043761A1

公开(公告)日：2014-03-27

申请号：PCT/AU2013/001079

申请日：2013-09-20

Applicant: UNIVERSITY OF SOUTH AUSTRALIA

Inventor： GRANT, Alexander James ,  HALEY, David Victor Lawrie ,  MCKILLIAM, Robert George ,  COWLEY, William George ,  CHAN, Ho Leung

IPC: H04B7/204 ,  G08C17/02 ,  G08B1/08 ,  H04W52/02

CPC classification number: H04W52/0216 ,  H04B7/212 ,  H04J11/0036 ,  H04L5/0055 ,  H04W52/0229 ,  H04W52/0241 ,  H04W52/028 ,  H04W72/0446 ,  Y02D70/164 ,  Y02D70/446

Abstract: A multiple access slotted wireless communication system comprising a plurality of terminals and a multi-access receiver is described. The multi-access receiver can decode multiple transmissions in each slot of a frame from terminals in its field of view. Each terminal has an active state for transmitting and an inactive state. After receiving acknowledgement of a successful transmission by the terminal, the terminal enters the inactive state for at least a transmission delay time. This may be the remaining time that the terminal is in the field of view of the multi-access receiver. This may be achieved by the terminal using a probability of transmission to determine whether or not to transmit in the next frame. The terminal may also be configured to select the slot in a frame, and this may be based upon information such as which slots were acknowledged. The receiver may use compression to transmit acknowledgement messages.

Abstract translation: 描述了包括多个终端和多接入接收机的多址时隙无线通信系统。 多址接收机可以从其视野中的终端解码帧的每个时隙中的多个传输。 每个终端具有用于发送和非活动状态的活动状态。 在接收到终端成功发送的确认之后，终端进入至少一个传输延迟时间的非活动状态。 这可能是终端在多址接收机的视野中的剩余时间。 这可以由终端使用发送概率来确定是否在下一帧中进行发送。 终端还可以被配置为在帧中选择时隙，并且这可以基于诸如哪些时隙被确认的信息。 接收机可以使用压缩来发送确认消息。