公开(公告)号：US06563864B1

公开(公告)日：2003-05-13

申请号：US09216082

申请日：1998-12-18

申请人： Yaser Ibrahim ,  Michael O. Polley ,  Ralph E. Payne

发明人： Yaser Ibrahim ,  Michael O. Polley ,  Ralph E. Payne

IPC分类号： H04B138

CPC分类号： H04B3/04

摘要： A digital subscriber line modem (30) capable of operating with multiple transmission line profiles depending on the current transmission line characteristics of a wire line pair (20) includes an interface (212, 292) to the wire line pair (20) and a signal converter (214, 290) with a terminal coupled to the interface. An on/off-hook detector(300) drives an impedance analyzer function (304) that is able to measure transmission line parameters based on the current line characteristics of the wire line pair (20). A control logic block (310) performs the actions required to adapt to a new line conditions of the wire line pair (20) and rapidly adapt to the new on/off hook condition.

摘要翻译： 根据有线线对（20）的当前传输线特性，能够以多个传输线路分布操作的数字用户线路调制解调器（30）包括到有线线对（20）的接口（212,292）和信号 转换器（214,290），其中终端耦合到接口。 开/关机检测器（300）驱动能够基于有线线对（20）的当前线路特性来测量传输线路参数的阻抗分析器功能（304）。 控制逻辑块（310）执行适应线路对（20）的新线路条件所需的动作，并且快速适应新的开/关机状态。

公开(公告)号：US5425050A

公开(公告)日：1995-06-13

申请号：US149264

申请日：1993-11-09

申请人： William F. Schreiber ,  Michael O. Polley

发明人： William F. Schreiber ,  Michael O. Polley

IPC分类号： H04B1/707 ,  H04J13/00 ,  H04J13/02 ,  H04L1/00 ,  H04L27/26 ,  H04L27/34 ,  H04N7/24 ,  H04N19/89 ,  H04N7/167

CPC分类号： H04B1/707 ,  H04J13/10 ,  H04L1/004 ,  H04L1/0065 ,  H04L27/2602 ,  H04L27/3488 ,  H04N19/89 ,  H04N21/2383 ,  H04N21/4382 ,  H04J2013/0037 ,  H04L2001/0098

摘要： An apparatus for encoding a television production signal for transmission, the television production signal including a first input signal carrying a first class of data and a second input signal carrying a second class of data, the second class data requiring a higher-quality transmission the first class data. For each word of the first input signal, the first stage generates N serial samples of the first output sample stream, each of the N serial samples being formed by a different combination of a set of more than one of the N samples of the each word. The second stage includes an input stage combining the second input signal stream with the first output sample stream to generate an intermediate input sample stream; a serial-to-parallel converter receiving the intermediate input sample stream and producing a second stream of words therefrom, each of the words of which being a parallel grouping of M successive samples of the intermediate input sample stream; a Discrete Fourier Transform (DFT) module producing a parallel output stream of words that is the discrete Fourier transform of the second word stream; and a parallel-to-series converter generating the FDM output signal from the parallel output stream of the DFT module.

摘要翻译： 一种用于编码用于传输的电视制作信号的装置，所述电视制作信号包括承载第一类数据的第一输入信号和携带第二类数据的第二输入信号，所述第二类数据需要较高质量的传输，第一类 类数据。 对于第一输入信号的每个字，第一级产生第一输出采样流的N个串行样本，N个串行样本中的每一个由不同组合的每个单词的N个采样中的一个以上的组合形成 。 第二级包括将第二输入信号流与第一输出采样流组合以产生中间输入采样流的输入级; 串行到并行转换器，其接收所述中间输入样本流并从其产生第二个词流，其中每个词是所述中间输入样本流的M个连续样本的并行分组; 离散傅立叶变换（DFT）模块，其产生作为所述第二字流的离散傅立叶变换的单词的并行输出流; 以及从DFT模块的并行输出流产生FDM输出信号的并行到串联转换器。

公开(公告)号：US20080222370A1

公开(公告)日：2008-09-11

申请号：US12045267

申请日：2008-03-10

申请人： Fitzgerald J Archibald ,  Stephen Hsiao-Yi Li ,  Michael O. Polley ,  Mohamed F. Mansour ,  Ramesh Naidu G

发明人： Fitzgerald J Archibald ,  Stephen Hsiao-Yi Li ,  Michael O. Polley ,  Mohamed F. Mansour ,  Ramesh Naidu G

IPC分类号： G06F12/00

CPC分类号： G06F9/30018

摘要： A method and apparatus of managing data stream, the method comprising archiving received data in a circular buffer; utilizing a breakpoint in realizing the archived received data continuity, wherein the breakpoint is set to the last data portion of the archived received data; when the archiving of the received data approaches the end of the circular buffer, stitching the last portion of the archived received data to the start of the circular buffer; and setting the breakpoint to the updated last data portion of the archived data.

摘要翻译： 一种管理数据流的方法和装置，所述方法包括将接收的数据归档在循环缓冲器中; 利用断点实现存档的接收数据连续性，其中断点被设置为归档接收数据的最后数据部分; 当接收到的数据的归档接近循环缓冲器的末尾时，将存档的接收数据的最后部分拼接到循环缓冲器的开头; 并将断点设置为归档数据的更新的最后数据部分。

公开(公告)号：US20080095281A1

公开(公告)日：2008-04-24

申请号：US11323746

申请日：2005-12-30

申请人： Srinath Hosur ,  Michael O. Polley ,  Anuj Batra ,  Manish Goel

发明人： Srinath Hosur ,  Michael O. Polley ,  Anuj Batra ,  Manish Goel

IPC分类号： H04B7/10 ,  H04L1/02

CPC分类号： H04L25/03203 ,  H04L1/0631 ,  H04L25/03184 ,  H04L25/0328 ,  H04L27/2601

摘要： In a wireless MIMO system with interference cancellation, compensate for decision errors in the cancelled symbols by adjustments to the scaling of the soft estimates with additive interference-proportional to estimates of the decision error probability.

摘要翻译： 在具有干扰消除的无线MIMO系统中，通过对具有与决策误差概率的估计成比例的加性干扰的软估计的缩放进行调整来补偿所取消符号中的判定误差。

公开(公告)号：US07236532B2

公开(公告)日：2007-06-26

申请号：US09878547

申请日：2001-06-11

申请人： Fernando A. Mujica ,  Michael O. Polley ,  Arthur J. Redfern ,  Nirmal C. Warke ,  Yaser M. Ibrahim

发明人： Fernando A. Mujica ,  Michael O. Polley ,  Arthur J. Redfern ,  Nirmal C. Warke ,  Yaser M. Ibrahim

IPC分类号： H04K1/10 ,  H04L27/28

CPC分类号： H04L5/006 ,  H04L5/0007 ,  H04L5/0046

摘要： A method of communicating across a channel includes receiving information having a known bandwidth and a known spectrum. The information is preferably in the form of a multicarrier modulated signal, e.g., a DMT signal. In one aspect, this information is received at a receiver having a reduced channel bandwidth. An aliasing spectrum can be calculated based on the known spectrum and the frequency difference between the known bandwidth and the reduced-channel bandwidth. The received information can then be modified based upon the aliasing function to compensate for alias distortion. For example, the received information can be modified by modifying the noise component or signal-to-noise ratio of the received information.

摘要翻译： 通过信道进行通信的方法包括具有已知带宽和已知频谱的接收信息。 该信息优选地以多载波调制信号的形式，例如DMT信号。 在一个方面，该信息在具有减小的信道带宽的接收机处被接收。 可以基于已知频谱和已知带宽与减少信道带宽之间的频率差来计算混叠频谱。 然后可以基于混叠函数修改所接收的信息以补偿别名失真。 例如，可以通过修改接收到的信息的噪声分量或信噪比来修改所接收的信息。

公开(公告)号：US07050768B2

公开(公告)日：2006-05-23

申请号：US10744310

申请日：2003-12-22

申请人： Srinath Hosur ,  Srikanth Gummadi ,  Michael O. Polley ,  Manish Goel

发明人： Srinath Hosur ,  Srikanth Gummadi ,  Michael O. Polley ,  Manish Goel

IPC分类号： H04B1/02

CPC分类号： H04B7/0689 ,  H04B7/04

摘要： For use with a multiple-input, multiple-output (MIMO) transmitter, a signal field controller, a method of controlling signal fields and a MIMO transmitter incorporating the controller or the method. In one embodiment, the controller includes: (1) a primary signal field mode indicator configured to cause a primary signal field to indicate a presence of a supplemental signal field and provide the primary signal field to the MIMO transmitter for transmission thereby and (2) a supplemental signal field generator coupled to the primary signal field mode indicator and configured to provide a supplemental signal field to the MIMO transmitter for further transmission thereby only when the primary signal field indicates the presence.

摘要翻译： 用于多输入多输出（MIMO）发射机，信号场控制器，控制信号场的方法和包含控制器或方法的MIMO发射机。 在一个实施例中，控制器包括：（1）主信号场模式指示符，其被配置为使主信号域指示补充信号场的存在，并将主信号字段提供给MIMO发射机用于传输，以及（2） 辅助信号场发生器，其耦合到主信号场模式指示符并且被配置为仅在主信号字段指示存在时向MIMO发射机提供补充信号字段以进一步发送。

公开(公告)号：US06795548B2

公开(公告)日：2004-09-21

申请号：US09754746

申请日：2001-01-04

申请人： Ralph E. Payne ,  Michael O. Polley ,  Fred J. Reuter

发明人： Ralph E. Payne ,  Michael O. Polley ,  Fred J. Reuter

IPC分类号： H04M100

CPC分类号： H04M11/062 ,  H04B1/58 ,  H04L12/289 ,  H04L12/2898 ,  H04M19/001

摘要： A system for data communication is disclosed that comprises a hybrid circuit (220) that receives a signal. A switched gain circuit (204) coupled to the hybrid circuit (220) receives the signal from the hybrid circuit (220). A receiver circuit (206) coupled to the switched gain circuit (204) receives the signal from the switched gain circuit (204). The switched gain circuit (204) adjusts the power of the signal transmitted to the receiver circuit (206). More specifically, the switched gain circuit (204) detects the power of the signal received from the hybrid circuit (220), and adjusts the power of the signal transmitted to the receiver circuit (206) based upon the power of the signal received from the hybrid circuit (220). A method for data communication is disclosed. A signal is received using a hybrid circuit (220). The signal is transmitted to a switched gain circuit (204) coupled to the hybrid circuit (220). The power of the signal is adjusted using the switched gain circuit (204). The adjusted signal is transmitted to a receiver circuit (206) coupled to the switched gain circuit (204). More specifically, the power of the signal is detected, and the power of the signal transmitted to the receiver circuit (206) is adjusted based upon the power of the signal received from the hybrid circuit (220).

摘要翻译： 公开了一种用于数据通信的系统，其包括接收信号的混合电路（220）。 耦合到混合电路（220）的开关增益电路（204）从混合电路（220）接收信号。 耦合到开关增益电路（204）的接收器电路（206）从开关增益电路（204）接收信号。 开关增益电路（204）调节发送到接收器电路（206）的信号的功率。 更具体地，开关增益电路（204）检测从混合电路（220）接收的信号的功率，并且基于从接收电路（220）接收的信号的功率来调整发送到接收机电路（206）的信号的功率 混合电路（220）。 公开了一种用于数据通信的方法。 使用混合电路（220）接收信号。 信号被发送到耦合到混合电路（220）的开关增益电路（204）。 使用开关增益电路（204）来调整信号的功率。 经调整的信号被发送到耦合到开关增益电路（204）的接收器电路（206）。 更具体地，检测信号的功率，并且基于从混合电路（220）接收的信号的功率来调整发送到接收机电路（206）的信号的功率。

公开(公告)号：US06618480B1

公开(公告)日：2003-09-09

申请号：US09070092

申请日：1998-04-30

申请人： Michael O. Polley ,  William J. Bright

发明人： Michael O. Polley ,  William J. Bright

IPC分类号： H04M100

CPC分类号： H04B3/23

摘要： Echo cancellation in data communication between modems utilizes analog echo cancellation to lessen reduction of usable dynamic range of the received signal at the input to the analog-to-digital converter (DAC) in the receiver. Two digital-to analog (D/A) conversions are provided in the modem's analog front end (AFE). One generates the analog signal for transmission. The other generates an analog representation of a cancellation signal that is used to electronically cancel the echo before analog-to-digital (A/D) conversion of the received signal. A preferred embodiment utilizes multiplexed DAC architecture to emulate two DACs by sharing DAC circuitry between data paths of the two D/A conversions.

摘要翻译： 在调制解调器之间的数据通信中的回波消除利用模拟回声消除来减少接收机中模拟数字转换器（DAC）的输入处的接收信号的可用动态范围的减小。 在调制解调器的模拟前端（AFE）中提供了两个数模转换（D / A）转换。 一个产生模拟信号进行传输。 另一个产生用于在接收信号的模数（A / D）转换之前电子地消除回波的消除信号的模拟表示。 优选实施例利用多路复用DAC架构通过在两个D / A转换的数据路径之间共享DAC电路来模拟两个DAC。

公开(公告)号：US06456650B1

公开(公告)日：2002-09-24

申请号：US09244607

申请日：1999-02-04

申请人： Yaqi Cheng ,  Adam M. Chellali ,  Michael O. Polley

发明人： Yaqi Cheng ,  Adam M. Chellali ,  Michael O. Polley

IPC分类号： H04B138

CPC分类号： H04M11/062

摘要： In a splitterless Digital Subscriber Line (DSL) modem 30, a receiver architecture (100) that permits monitoring of harmonics within the upstream channel of a DSL connection. The receiver (100) can detect the harmonics by monitoring the harmonics in some empty tones or specified tones. A threshold can be set to differ the normal noise power and harmonics power in those empty or specified tones. When a POTS device (10) coupled to same wire line pair (20) as the DSL modem (30) goes off-hook, the DSL modem (30) can switch from the normal state to an off-hook state in which the harmonics are reduced to minimum by transmitting only the upper sub-band tones of the upstream transmission channel at reduced power levels.

摘要翻译： 在无分离器数字用户线路（DSL）调制解调器30中，允许监视DSL连接的上行信道内的谐波的接收机体系结构（100）。 接收器（100）可以通过监视一些空调或指定音调中的谐波来检测谐波。 可以设置阈值以使空闲或指定音调中的正常噪声功率和谐波功率不同。 当耦合到与DSL调制解调器（30）的同一有线线路（20）的POTS设备（10）摘机时，DSL调制解调器（30）可以从正常状态切换到摘机状态，其中谐波 通过在降低的功率电平仅发送上行传输信道的上级子带音调而减小到最小。