公开(公告)号：US09071342B1

公开(公告)日：2015-06-30

申请号：US13081746

申请日：2011-04-07

申请人： Xiangdong Jin ,  Mao Yu ,  Chi-Yuen Young

发明人： Xiangdong Jin ,  Mao Yu ,  Chi-Yuen Young

IPC分类号： H04B1/709 ,  G01S19/30

CPC分类号： H04B1/709 ,  G01S19/30

摘要： In accordance with the teachings described herein, system and methods are provided for a GPS acquisition correlation scheme with a reduced memory requirement. An example system may include a memory, a local PRN code generator, correlators, adder trees, an accumulator, and an output memory. The memory may be used to store an input PRN code. The local PRN code generator generates a replica PRN code and outputs a replica PRN code. The local PRN code generator may also shift the replica PRN code for each output epoch. One or more correlators receive the input PRN code and the replica PRN code and compare a bit of the input PRN code to a bit of the replica PRN code and generates a comparison. The adder trees add the comparisons and generate a comparison output. An accumulator accumulates the comparison output and outputs an accumulated output to an output memory.

摘要翻译： 根据本文所述的教导，为具有减少的存储器需求的GPS采集相关方案提供了系统和方法。 示例系统可以包括存储器，本地PRN码发生器，相关器，加法器树，累加器和输出存储器。 存储器可以用于存储输入PRN码。 本地PRN代码生成器生成副本PRN代码并输出副本PRN代码。 本地PRN码发生器也可以移位每个输出时期的副本PRN码。 一个或多个相关器接收输入PRN码和副本PRN码，并将输入PRN码的一位与副本PRN码的位进行比较，并产生比较。 加法器树添加比较并生成比较输出。 累加器累加比较输出，并将累积的输出输出到输出存储器。

公开(公告)号：US08570887B2

公开(公告)日：2013-10-29

申请号：US12944031

申请日：2010-11-11

申请人： Thomas B. Cho ,  Li Lin ,  Mao Yu ,  Atul Salhotra

发明人： Thomas B. Cho ,  Li Lin ,  Mao Yu ,  Atul Salhotra

IPC分类号： G01R31/08

CPC分类号： H04L27/0002 ,  H03F1/0272 ,  H03G3/3068

摘要： Apparatus having corresponding methods and non-transitory computer-readable media comprise an amplifier configured to amplify signals according to a bias current, wherein the signals represent packets of data; a packet module configured to recover the packets of data from the signals amplified by the amplifier; and a control module configured to control the bias current according to one or more characteristics of the packets of data.

摘要翻译： 具有相应方法和非瞬时计算机可读介质的装置包括放大器，其经配置以根据偏置电流放大信号，其中所述信号表示数据分组; 分组模块，被配置为从放大器放大的信号中恢复数据分组; 以及控制模块，被配置为根据所述数据分组的一个或多个特性来控制所述偏置电流。

公开(公告)号：US09154197B2

公开(公告)日：2015-10-06

申请号：US12910608

申请日：2010-10-22

申请人： Hongyuan Zhang ,  Raja Banerjea ,  Yong Liu ,  Mao Yu

发明人： Hongyuan Zhang ,  Raja Banerjea ,  Yong Liu ,  Mao Yu

IPC分类号： H04J3/24 ,  H04H20/71 ,  H04L27/28 ,  H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04L25/02

摘要： In a method for generating a preamble of a data unit for transmission via a communication channel, an indication of a first number of spatial or space-time streams is included in a first field of the preamble. The first number of spatial or space-time streams corresponds to transmission of the data unit to a first receiver. One or more training sequences are included in a second field of the preamble. The preamble is formatted such that the first field of the preamble will be transmitted prior to the second field of the preamble being transmitted.

公开(公告)号：US08675712B1

公开(公告)日：2014-03-18

申请号：US13080955

申请日：2011-04-06

申请人： Xiangdong Jin ,  Mao Yu ,  Jianwei Bei ,  Xiaotao Xu

发明人： Xiangdong Jin ,  Mao Yu ,  Jianwei Bei ,  Xiaotao Xu

IPC分类号： H04B1/00

CPC分类号： G01S19/254 ,  G01S19/30

摘要： In accordance with the teachings described herein, system and methods are provided for a GPS PRN code interpolation scheme with a reduced memory requirement. An example GPS receiver system may include a memory, a local PRN code generator, and an interpolator. The memory may be used to store GPS PRN code received from a global positioning satellite. The local PRN code generator generates a replica PRN code having a repeating code that includes at least a first epoch and a second epoch. The interpolator determines an offset point in the first epoch of replica PRN code and interpolates the replica PRN code at a predetermined sample rate to generate an interpolated replica PRN code for use in correlating with the GPS PRN code.

摘要翻译： 根据本文所述的教导，为具有减少的存储器要求的GPS PRN码插值方案提供了系统和方法。 示例性GPS接收机系统可以包括存储器，本地PRN码发生器和内插器。 存储器可以用于存储从全球定位卫星接收的GPS PRN码。 本地PRN代码生成器生成具有至少包括第一纪元和第二纪元的重复代码的副本PRN代码。 内插器确定复制PRN码的第一纪元中的偏移点，并以预定采样率内插副本PRN码，以产生用于与GPS PRN码相关的内插副本PRN码。

公开(公告)号：US20100260159A1

公开(公告)日：2010-10-14

申请号：US12758603

申请日：2010-04-12

申请人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Sudhir Srinivasa ,  Mao Yu ,  Raja Banerjea

发明人： Hongyuan Zhang ,  Hui-Ling Lou ,  Rohit U. Nabar ,  Sudhir Srinivasa ,  Mao Yu ,  Raja Banerjea

IPC分类号： H04W4/00

CPC分类号： H04L1/0079 ,  H04L1/0072 ,  H04L1/009 ,  H04L27/2613 ,  H04L69/18 ,  H04W28/06 ,  H04W84/12 ,  H04W99/00

摘要： In a method for generating a data unit for transmission via a communication channel, wherein the data unit conforms to a first communication protocol, a preamble of the data unit is generated. The preamble includes a first field having information that indicates a duration of the data unit, the first field being formatted such that the first field is decodable by a receiver device that conforms to a second communication protocol but does not conform to the first communication protocol to determine the duration of the data unit based on the first field. Additionally, the preamble is formatted such that a portion of the preamble is decodable by a receiver device that conforms to a third communication protocol but does not conform to the first communication protocol. Also, the preamble is formatted such that a receiver device that conforms to the first communication protocol can determine that the data unit conforms to the first communication protocol. A data portion of the data unit that conforms to the first communication protocol and does not conform to either (i) the second communication protocol or (ii) the third communication protocol is generated.

摘要翻译： 在通过通信信道生成用于发送的数据单元的方法中，其中数据单元符合第一通信协议，生成数据单元的前同步码。 前导码包括具有指示数据单元的持续时间的信息的第一字段，第一字段被格式化，使得第一字段可由符合第二通信协议但不符合第一通信协议的接收机设备解码， 基于第一个字段确定数据单元的持续时间。 另外，前导码被格式化，使得前导码的一部分可以由符合第三通信协议但不符合第一通信协议的接收机设备解码。 此外，前导码格式化使得符合第一通信协议的接收机设备可以确定数据单元符合第一通信协议。 产生符合第一通信协议并且不符合（i）第二通信协议或（ii）第三通信协议的数据单元的数据部分。

公开(公告)号：US09480018B2

公开(公告)日：2016-10-25

申请号：US12938260

申请日：2010-11-02

申请人： Yong Liu ,  Hongyuan Zhang ,  Raja Banerjea ,  Mao Yu

发明人： Yong Liu ,  Hongyuan Zhang ,  Raja Banerjea ,  Mao Yu

IPC分类号： H04W4/00 ,  H04W52/02 ,  H04W74/08 ,  H04W84/12

CPC分类号： H04W52/58 ,  H04W52/0219 ,  H04W52/0222 ,  H04W52/0229 ,  H04W74/0808 ,  H04W74/0816 ,  H04W84/12 ,  H04W88/08 ,  Y02D70/1262 ,  Y02D70/142

摘要： A method in a communication device for processing a received data unit includes determining whether the communication device is an intended receiver based on the received data unit, determining whether the received data unit includes an exclusive use indication, where the exclusive use indication indicates that a plurality of data units are transmitted only to the at least one intended receiver during a time period, where each of the plurality of data units has at least a respective physical layer (PHY) preamble, and determining a time interval during which the communication device need not listen for incoming data units using (i) a result of determining whether the received data unit includes an exclusive use indication and (ii) a result of determining whether the communication device is an intended receiver.

摘要翻译： 用于处理接收数据单元的通信设备中的方法包括：基于接收到的数据单元确定通信设备是否是预期接收机，确定接收到的数据单元是否包括专用指示，其中专用指示指示多个 在多个数据单元中的每个数据单元至少具有相应的物理层（PHY）前导码的时间周期期间仅将数据单元仅发送到至少一个预期的接收机，并且确定通信设备不需要的时间间隔 使用（i）确定接收到的数据单元是否包括专用指示的结果来监听输入数据单元，以及（ii）确定通信设备是否是预期接收机的结果。

公开(公告)号：US08724546B2

公开(公告)日：2014-05-13

申请号：US12910628

申请日：2010-10-22

申请人： Hongyuan Zhang ,  Raja Banerjea ,  Yong Liu ,  Mao Yu

发明人： Hongyuan Zhang ,  Raja Banerjea ,  Yong Liu ,  Mao Yu

IPC分类号： H04W4/00 ,  H04J3/24

CPC分类号： H04B7/0452 ,  H04B7/0413 ,  H04B7/0669 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L25/0226 ,  H04W84/12

摘要： In a method for generating a preamble of a data unit for transmission via a multiple input, multiple output (MIMO) communication channel, a first field of the preamble is generated. The first field provides a plurality of indicators to a plurality of receivers. Each one of the plurality of indicators indicates a set of a plurality of training sequences that corresponds to transmission of the data unit to a corresponding one of the plurality of receivers. The plurality of training sequences is included in a second field of the preamble. The preamble is formatted such that the first field of the preamble will be transmitted prior to the second field of the preamble being transmitted.

摘要翻译： 在通过多输入多输出（MIMO）通信信道生成用于传输的数据单元的前同步码的方法中，生成前导码的第一字段。 第一场向多个接收机提供多个指示符。 多个指示符中的每个指示符指示对应于数据单元向多个接收器中的相应一个的传输的多个训练序列的集合。 多个训练序列被包括在前导码的第二个字段中。 格式化前置码使得前导码的第一字段将在正在发送的前导码的第二字段之前被发送。

公开(公告)号：US08634317B1

公开(公告)日：2014-01-21

申请号：US13103632

申请日：2011-05-09

申请人： Mao Yu

发明人： Mao Yu

IPC分类号： H04L1/16 ,  H04L12/56

CPC分类号： H04W24/10 ,  H04L1/0072 ,  H04L1/08 ,  H04L47/10 ,  H04W74/0808

摘要： In a method for detecting a duplicate packet in a signal, the signal is received using a receiver. Carrier sense (CS) operations are performed on the received signal in at least each of two frequency bands. Clear channel assessment (CCA) operations are performed on the received signal in the at least each of two frequency bands. A determination whether the received signal corresponds to a packet duplicated in the at least two frequency bands is made based on the CS operations and the CCA operations.

摘要翻译： 在用于检测信号中的重复分组的方法中，使用接收机接收信号。 在两个频带中的至少每个频带中对接收到的信号执行载波侦听（CS）操作。 在两个频带中的至少每个频带中对接收到的信号执行清除信道评估（CCA）操作。 基于CS操作和CCA操作来确定接收到的信号是否对应于在至少两个频带中复制的分组。

公开(公告)号：US20110116399A1

公开(公告)日：2011-05-19

申请号：US12944031

申请日：2010-11-11

申请人： Thomas B. Cho ,  Li Lin ,  Mao Yu ,  Atul Salhotra

发明人： Thomas B. Cho ,  Li Lin ,  Mao Yu ,  Atul Salhotra

IPC分类号： H04L12/26 ,  H04W24/00

CPC分类号： H04L27/0002 ,  H03F1/0272 ,  H03G3/3068

摘要： Apparatus having corresponding methods and non-transitory computer-readable media comprise an amplifier configured to amplify signals according to a bias current, wherein the signals represent packets of data; a packet module configured to recover the packets of data from the signals amplified by the amplifier; and a control module configured to control the bias current according to one or more characteristics of the packets of data.

摘要翻译： 具有相应方法和非瞬时计算机可读介质的装置包括放大器，其经配置以根据偏置电流放大信号，其中所述信号表示数据分组; 分组模块，被配置为从放大器放大的信号中恢复数据分组; 以及控制模块，被配置为根据所述数据分组的一个或多个特性来控制所述偏置电流。