公开(公告)号：US08346205B2

公开(公告)日：2013-01-01

申请号：US13190384

申请日：2011-07-25

申请人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

发明人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

IPC分类号： H04B1/16

CPC分类号： H04B1/16 ,  H04B17/382 ,  H04W52/0225 ,  Y02D70/00 ,  Y02D70/1262

摘要： A method and system for wireless communications between base and mobile stations use reference signals transmitted from base stations prior transmission of data signals. The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of receivers of the mobile stations for processing the following data signals. Applications of the invention include wireless communication systems compliant with OFDMA, 3GPP LTE, RFN-OFDMA, OFDM, TDMA, and the like communication protocols.

摘要翻译： 用于基站和移动站之间的无线通信的方法和系统在数据信号的传输之前使用从基站发送的参考信号。 参考信号用于确定基站和移动台之间的通信信道的传播特性，并实时优化用于处理以下数据信号的移动站接收机的参数。 本发明的应用包括符合OFDMA，3GPP LTE，RFN-OFDMA，OFDM，TDMA等的通信协议的无线通信系统。

公开(公告)号：US20110280208A1

公开(公告)日：2011-11-17

申请号：US13190384

申请日：2011-07-25

申请人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

发明人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

IPC分类号： H04W72/04

CPC分类号： H04B1/16 ,  H04B17/382 ,  H04W52/0225 ,  Y02D70/00 ,  Y02D70/1262

摘要： A method and system for wireless communications between base and mobile stations use reference signals transmitted from base stations prior transmission of data signals. The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of receivers of the mobile stations for processing the following data signals. Applications of the invention include wireless communication systems compliant with OFDMA, 3GPP LTE, RFN-OFDMA, OFDM, TDMA, and the like communication protocols.

摘要翻译： 用于基站和移动站之间的无线通信的方法和系统在数据信号的传输之前使用从基站发送的参考信号。 参考信号用于确定基站和移动台之间的通信信道的传播特性，并实时优化用于处理以下数据信号的移动站接收机的参数。 本发明的应用包括符合OFDMA，3GPP LTE，RFN-OFDMA，OFDM，TDMA等的通信协议的无线通信系统。

公开(公告)号：US20080232308A1

公开(公告)日：2008-09-25

申请号：US11688125

申请日：2007-03-19

申请人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

发明人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

IPC分类号： H04B17/00

CPC分类号： H04B1/16 ,  H04B17/382 ,  H04W52/0225 ,  Y02D70/00 ,  Y02D70/1262

摘要： A method and system for wireless communications between base and mobile stations use reference signals transmitted from base stations prior transmission of data signals. The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of receivers of the mobile stations for processing the following data signals. Applications of the invention include wireless communication systems compliant with OFDMA, 3GPP LTE, RFN-OFDMA, OFDM, TDMA, and the like communication protocols.

摘要翻译： 用于基站和移动站之间的无线通信的方法和系统在数据信号的传输之前使用从基站发送的参考信号。 参考信号用于确定基站和移动台之间的通信信道的传播特性，并实时优化用于处理以下数据信号的移动站接收机的参数。 本发明的应用包括符合OFDMA，3GPP LTE，RFN-OFDMA，OFDM，TDMA等的通信协议的无线通信系统。

公开(公告)号：US07986933B2

公开(公告)日：2011-07-26

申请号：US11688125

申请日：2007-03-19

申请人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

发明人： Leo G. Dehner ,  James W. McCoy ,  Kevin B. Traylor

IPC分类号： H04B1/16

CPC分类号： H04B1/16 ,  H04B17/382 ,  H04W52/0225 ,  Y02D70/00 ,  Y02D70/1262

摘要： A method and system for wireless communications between base and mobile stations use reference signals transmitted from base stations prior transmission of data signals. The reference signals are used to determine propagation characteristics of communication channels between the base and mobile stations and optimize, in real time, parameters of receivers of the mobile stations for processing the following data signals. Applications of the invention include wireless communication systems compliant with OFDMA, 3GPP LTE, RFN-OFDMA, OFDM, TDMA, and the like communication protocols.

摘要翻译： 用于基站和移动站之间的无线通信的方法和系统在数据信号的传输之前使用从基站发送的参考信号。 参考信号用于确定基站和移动台之间的通信信道的传播特性，并实时优化用于处理以下数据信号的移动站接收机的参数。 本发明的应用包括符合OFDMA，3GPP LTE，RFN-OFDMA，OFDM，TDMA等的通信协议的无线通信系统。

公开(公告)号：US08271569B2

公开(公告)日：2012-09-18

申请号：US12140890

申请日：2008-06-17

申请人： Jayakrishnan C. Mundarath ,  Leo G. Dehner ,  Kevin B. Traylor

发明人： Jayakrishnan C. Mundarath ,  Leo G. Dehner ,  Kevin B. Traylor

IPC分类号： G06F15/00

CPC分类号： G06F17/142

摘要： A technique for performing a discrete Fourier transform (DFT) includes storing, in a single-port memory, multiple signal points. A first group of consecutive ones of the multiple signal points are fetched (from a first line of the single-port memory) to a first input register associated with a processor that includes multiple arithmetic units (AUs) that are each configured to perform multiply accumulate (MAC) operations. A second group of consecutive ones of the multiple signal points are then fetched (from a second line of the single-port memory) to a second input register associated with the processor. Selected pairs of the multiple signal points are then loaded (one from each of the first and second input registers for each pair) into the multiple arithmetic units during an initial butterfly stage. Radix-2 butterfly operations are then performed on the selected pairs of the multiple signal points (using the multiple AUs) to provide respective output elements.

摘要翻译： 用于执行离散傅里叶变换（DFT）的技术包括在单端口存储器中存储多个信号点。 将多个信号点中的连续的多个信号点中的第一组（从单端口存储器的第一行）提取到与包括多个运算单元（AU）的处理器相关联的第一输入寄存器，每个运算单元被配置为执行乘法累积 （MAC）操作。 然后将多个信号点中的第二组连续的信号点从单端口存储器的第二行提取到与处理器相关联的第二输入寄存器。 然后，在初始蝴蝶阶段期间，将多个信号点的所选择的对加载（每对中的每个第一和第二输入寄存器中的一个）分配到多个运算单元中。 然后对所选择的多个信号点对（使用多个AU）执行基2蝶形运算，以提供相应的输出元件。

公开(公告)号：US20090313314A1

公开(公告)日：2009-12-17

申请号：US12140890

申请日：2008-06-17

申请人： JAYAKRISHNAN C. MUNDARATH ,  Leo G. Dehner ,  Kevin B. Traylor

发明人： JAYAKRISHNAN C. MUNDARATH ,  Leo G. Dehner ,  Kevin B. Traylor

IPC分类号： G06F17/14

CPC分类号： G06F17/142

摘要： A technique for performing a discrete Fourier transform (DFT) includes storing, in a single-port memory, multiple signal points. A first group of consecutive ones of the multiple signal points are fetched (from a first line of the single-port memory) to a first input register associated with a processor that includes multiple arithmetic units (AUs) that are each configured to perform multiply accumulate (MAC) operations. A second group of consecutive ones of the multiple signal points are then fetched (from a second line of the single-port memory) to a second input register associated with the processor. Selected pairs of the multiple signal points are then loaded (one from each of the first and second input registers for each pair) into the multiple arithmetic units during an initial butterfly stage. Radix-2 butterfly operations are then performed on the selected pairs of the multiple signal points (using the multiple AUs) to provide respective output elements.

摘要翻译： 用于执行离散傅里叶变换（DFT）的技术包括在单端口存储器中存储多个信号点。 将多个信号点中的连续的多个信号点中的第一组（从单端口存储器的第一行）提取到与包括多个运算单元（AU）的处理器相关联的第一输入寄存器，每个运算单元被配置为执行乘法累积 （MAC）操作。 然后将多个信号点中的第二组连续的信号点从单端口存储器的第二行提取到与处理器相关联的第二输入寄存器。 然后，在初始蝴蝶阶段期间，将多个信号点的所选择的对加载（每对中的每个第一和第二输入寄存器中的一个）分配到多个运算单元中。 然后对所选择的多个信号点对（使用多个AU）执行基2蝶形运算，以提供相应的输出元件。

公开(公告)号：US20140376648A1

公开(公告)日：2014-12-25

申请号：US13924792

申请日：2013-06-24

申请人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor

发明人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor

IPC分类号： H04L27/26

CPC分类号： H04L27/2655 ,  H04B3/54 ,  H04L27/2663 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2688 ,  H04L27/3809

摘要： Methods and systems are disclosed for frequency-domain amplitude normalization for symbol correlation in multi-carrier communication systems. Digital samples associated with input signals received from a communication medium are processed using a Fast Fourier Transform (FFT) to generate complex frequency components. Each complex frequency component is normalized with respect to its amplitude, and the frequency-domain, amplitude-normalized frequency components are multiplied with frequency components for reference symbol(s) to generate frequency-domain correlation values. These frequency-domain correlation values are analyzed to determine if a correlation exists between the amplitude-normalized frequency components and the predetermined reference frequency components. A correlation detection output is then generated that indicates whether or not a symbol synchronization was achieved. The disclosed embodiments are particularly useful for symbol correlation in received signals for power line communication (PLC) systems.

摘要翻译： 公开了用于多载波通信系统中的符号相关的频域幅度归一化的方法和系统。 使用快速傅立叶变换（FFT）处理与从通信介质接收的输入信号相关联的数字采样以产生复频率分量。 每个复频分量相对于其振幅被归一化，并且将频域幅度归一化频率分量与用于参考符号的频率分量相乘以产生频域相关值。 分析这些频域相关值，以确定振幅归一化频率分量与预定参考频率分量之间是否存在相关性。 然后生成指示是否实现符号同步的相关检测输出。 所公开的实施例对于用于电力线通信（PLC）系统的接收信号中的符号相关性特别有用。

公开(公告)号：US6121819A

公开(公告)日：2000-09-19

申请号：US55445

申请日：1998-04-06

申请人： Kevin B. Traylor

发明人： Kevin B. Traylor

IPC分类号： G06G7/12 ,  H03D7/14 ,  H04B1/30

CPC分类号： H04B1/30

摘要： A mixer circuit (400) for use with a multi-stage receiver (200) accepts a single ended or differential (i.e. balanced) input (401). A voltage to current converter (402) comprised of a single RF transistor coupled to the input (401) provides a single current node (404) having a current proportional to a received input. A switching network (408) employs a plurality of stages (406). Each stage (406) is connected to the current node (404) and further has a control line (A, B, C, D). A clock signal generator connected to the control lines (A, B, C, D) of the switching network stage (406), generates clock signals having a frequency equal to the frequency of the received RF input signal. The switching network (408) under control of the clock signals switches the current at a frequency equal to the frequency of the received RF input signal to generate baseband I and Q signals. If the mixer (500) is differential, the balanced signal inputs (520) will be 180.degree. out of phase, one to another. In addition, the mixer (500) will consist of a first (510) and second (515) switching network. Of importance, only one first (510) and one second (515) switching network stage is active at any instant in time.

摘要翻译： 与多级接收器（200）一起使用的混频器电路（400）接受单端或差分（即平衡）输入（401）。 由耦合到输入（401）的单个RF晶体管组成的电压 - 电流转换器（402）提供具有与接收输入成比例的电流的单个电流节点（404）。 交换网络（408）采​​用多个级（406）。 每个级（406）连接到当前节点（404），并且还具有控制线（A，B，C，D）。 连接到交换网络级（406）的控制线（A，B，C，D）的时钟信号发生器产生频率等于所接收的RF输入信号的频率的时钟信号。 在时钟信号的控制下的交换网络（408）以等于所接收的RF输入信号的频率的频率切换电流，以产生基带I和Q信号。 如果混合器（500）是差分的，平衡信号输入（520）将相位相差180°。 此外，混频器（500）将由第一（510）和第二（515）交换网络组成。 重要的是，只有一个第一（510）和一秒（515）交换网络阶段在任何时刻都是活跃的。

公开(公告)号：US09282525B2

公开(公告)日：2016-03-08

申请号：US13925023

申请日：2013-06-24

申请人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor ,  Khurram Waheed

发明人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor ,  Khurram Waheed

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04W56/00

CPC分类号： H04W56/0005

摘要： Methods and systems are disclosed for frequency-domain symbol and frame synchronization for multi-carrier communication systems. Received signals are sampled and converted into frequency components associated with subcarriers within the multi-carrier communication signals. Symbol synchronization is performed in the frequency domain by performing correlation(s) between frequency components of the received signal and frequency-domain synchronization symbol(s). After symbol synchronization, frame synchronization correlation is also performed in the frequency domain between frequency components of the received signal and frequency-domain synchronization symbol(s). The disclosed embodiments are particularly useful for symbol and frame synchronization in multi-carrier received signals for power line communication (PLC) systems and/or other harsh noisy communication environments.

摘要翻译： 公开了用于多载波通信系统的频域符号和帧同步的方法和系统。 接收的信号被采样并转换成与多载波通信信号内的子载波相关联的频率分量。 通过执行接收信号的频率分量与频域同步符号之间的相关性，在频域中执行符号同步。 在符号同步之后，也在接收信号的频率分量与频域同步符号之间的频域中执行帧同步相关。 所公开的实施例对于用于电力线通信（PLC）系统和/或其他恶劣的噪声通信环境的多载波接收信号中的符号和帧同步特别有用。

公开(公告)号：US09100261B2

公开(公告)日：2015-08-04

申请号：US13924792

申请日：2013-06-24

申请人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor

发明人： Jianqiang Zeng ,  Steven M. Bosze ,  Raja V. Tamma ,  Kevin B. Traylor

IPC分类号： H04K1/10 ,  H04L27/28 ,  H04L27/26

CPC分类号： H04L27/2655 ,  H04B3/54 ,  H04L27/2663 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2688 ,  H04L27/3809

摘要： Methods and systems are disclosed for frequency-domain amplitude normalization for symbol correlation in multi-carrier communication systems. Digital samples associated with input signals received from a communication medium are processed using a Fast Fourier Transform (FFT) to generate complex frequency components. Each complex frequency component is normalized with respect to its amplitude, and the frequency-domain, amplitude-normalized frequency components are multiplied with frequency components for reference symbol(s) to generate frequency-domain correlation values. These frequency-domain correlation values are analyzed to determine if a correlation exists between the amplitude-normalized frequency components and the predetermined reference frequency components. A correlation detection output is then generated that indicates whether or not a symbol synchronization was achieved. The disclosed embodiments are particularly useful for symbol correlation in received signals for power line communication (PLC) systems.

摘要翻译： 公开了用于多载波通信系统中的符号相关的频域幅度归一化的方法和系统。 使用快速傅立叶变换（FFT）处理与从通信介质接收的输入信号相关联的数字采样以产生复频率分量。 每个复频分量相对于其振幅被归一化，并且将频域幅度归一化频率分量与用于参考符号的频率分量相乘以产生频域相关值。 分析这些频域相关值，以确定振幅归一化频率分量与预定参考频率分量之间是否存在相关性。 然后生成指示是否实现符号同步的相关检测输出。 所公开的实施例对于用于电力线通信（PLC）系统的接收信号中的符号相关性特别有用。