Method and apparatus for reducing peak-to-average requirements in
multi-tone communication circuits
    1.
    发明授权
    Method and apparatus for reducing peak-to-average requirements in multi-tone communication circuits 失效
    用于减少多音通信电路中的峰值与平均要求的方法和装置

    公开(公告)号:US5835536A

    公开(公告)日:1998-11-10

    申请号:US383026

    申请日:1995-02-02

    IPC分类号: H04L27/26 H04L27/34 H04K1/10

    摘要: A symbol generator (804) generates a time-domain discrete multi-tone symbol (810). A magnitude comparator (812) compares the magnitude of the time-domain discrete multi-tone symbol (810) with a magnitude threshold. When the magnitude of the time-domain discrete multi-tone symbol (810) compares unfavorably to the magnitude threshold, a magnitude adjusting symbol (816) is added to the time-domain discrete multi-tone symbol (810) such that the magnitude of the time-domain discrete multi-tone symbol (810) is reduced, thereby reducing the peak-to-average requirements (PAR).

    摘要翻译: 符号生成器(804)生成时域离散多色调符号(810)。 幅度比较器(812)将时域离散多音调符号(810)的幅度与幅度阈值进行比较。 当时域离散多音调符号(810)的大小与幅度阈值不利地比较时,幅度调整符号(816)被加到时域离散多音调符号(810),使得 降低了时域离散多音调符号(810),从而降低了峰值平均要求(PAR)。

    Flexible asymmetrical digital subscriber line ADSL transmitter, remote
terminal using same, and method therefor
    4.
    发明授权
    Flexible asymmetrical digital subscriber line ADSL transmitter, remote terminal using same, and method therefor 失效
    灵活的非对称数字用户线ADSL发射机,远程终端使用相同,及其方法

    公开(公告)号:US5781728A

    公开(公告)日:1998-07-14

    申请号:US616819

    申请日:1996-03-15

    摘要: A flexible asymmetrical digital subscriber line (ADSL) transmitter is able to operate simultaneously with integrated services digital network (ISDN) terminal equipment (TE) using a common telephone line (18). The ADSL transmitter changes the frequency content of a frequency-encoded ADSL signal (104) so that its frequency content does not overlap the frequency content of the ISDN TE signal. A corresponding ADSL receiver located within a central office (CO) adapts to the changed frequency content, allowing the ADSL signal to be transmitted over the telephone line without substantial loss of signal integrity. In one embodiment, an ADSL transmitter (100) converts ADSL symbols making up the frequency-encoded ADSL signal (104) into a corresponding time domain signal. The transmitter (100) then interpolates the time domain signal and high pass filters the interpolated signal. This high pass filtered signal is then converted to analog form, bandpass filtered, and driven onto the telephone line (18).

    摘要翻译: 灵活的非对称数字用户线(ADSL)发射机能够使用公用电话线(18)与综合业务数字网(ISDN)终端设备(TE)同时工作。 ADSL发射机改变频率编码ADSL信号(104)的频率内容,使其频率内容不与ISDN TE信号的频率内容重叠。 位于中心局(CO)内的对应的ADSL接收机适应于改变的频率内容,允许ADSL信号通过电话线传输,而不会显着损失信号完整性。 在一个实施例中,ADSL发射机(100)将构成频率编码的ADSL信号(104)的ADSL符号转换成对应的时域信号。 然后,发射机(100)内插时域信号,并对内插信号进行高通滤波。 然后将该高通滤波信号转换为模拟形式,经过滤波,并被驱动到电话线路(18)上。

    Method for allocating data and power in a discrete multi-tone communication system
    5.
    发明授权
    Method for allocating data and power in a discrete multi-tone communication system 失效
    在离散多音通信系统中分配数据和功率的方法

    公开(公告)号:US06259746B1

    公开(公告)日:2001-07-10

    申请号:US09007218

    申请日:1998-01-14

    IPC分类号: H04L2704

    CPC分类号: H04L27/2608

    摘要: In the present invention, carriers associated with a discrete multi-tone (DMT) communications system (10) are sorted according to bit allocation capacity. The number of bits needed to attain a specified bit rate are then allocated beginning with the carrier having the greatest bit allocation capacity and proceeding toward the carrier having the least bit allocation capacity until all bits to are allocated. Once allocated, the power to any unused bins is reduced. Different subsets of the carriers between line cards can be specified in order to reduce crosstalk between adjacent lines.

    摘要翻译: 在本发明中,根据比特分配容量对与离散多音(DMT)通信系统(10)相关联的载波进行分类。 然后从具有最大位分配容量的载波开始分配达到指定比特率所需的比特数,并且朝向具有最小比特分配容量的载波进行分配,直到所有比特被分配为止。 一旦分配,任何未使用的箱的功率就会降低。 可以指定线路卡之间的载波的不同子集,以减少相邻线路之间的串扰。

    Method for allocating data and power in a discrete, multi-tone communication system
    6.
    发明授权
    Method for allocating data and power in a discrete, multi-tone communication system 失效
    用于在离散的多音通信系统中分配数据和功率的方法

    公开(公告)号:US06275522B1

    公开(公告)日:2001-08-14

    申请号:US09007390

    申请日:1998-01-14

    IPC分类号: H04B346

    CPC分类号: H04L27/2608

    摘要: In the present invention, an ADSL system (10) identifies good bin as a bin capable of successfully transmitting data to a destination. A bad bin is identified as a carrier that is not capable of successfully transmitting data to the destination. A marginal bin is identified as a carrier that may be capable of transmitting data to the destination. The power to a bad bin is reduced and allocated to the marginal or good bin(s) to allow an increased bit rate. In another embodiment, the power to marginal bin is reduced and allocated to the good bin(s).

    摘要翻译: 在本发明中,ADSL系统(10)识别出能够成功地将数据发送到目的地的bin的好的bin。 一个坏的垃圾箱被识别为不能成功传送数据到目的地的载体。 边缘垃圾箱被识别为可以向目的地发送数据的载体。 减少对坏垃圾箱的电力并将其分配给边缘或好的仓,以允许增加的比特率。 在另一个实施例中,边缘垃圾箱的功率被减少并分配给好的垃圾箱。

    Line-powered network interface device
    7.
    发明授权
    Line-powered network interface device 有权
    线路供电网络接口设备

    公开(公告)号:US07239628B1

    公开(公告)日:2007-07-03

    申请号:US10136508

    申请日:2002-05-01

    IPC分类号: H04L12/66

    CPC分类号: H04L12/10 H04M11/062

    摘要: A network interface device includes a first interface, a power extractor, a transceiver, and a second interface. The first interface receives a signal that includes both power and packetized information. The power extractor extracts the power from the signal and powers the transceiver. The transceiver extracts the packetized information from the signal and communicates the information to a user device using the second interface.

    摘要翻译: 网络接口设备包括第一接口,功率提取器,收发器和第二接口。 第一个接口接收包含功率和分组信息的信号。 电源提取器从信号中提取电源并为收发器供电。 收发器从信号中提取分组信息,并使用第二接口将信息传送到用户设备。

    Method and apparatus for updating carrier channel allocations
    8.
    发明授权
    Method and apparatus for updating carrier channel allocations 失效
    用于更新载波信道分配的方法和装置

    公开(公告)号:US5521906A

    公开(公告)日:1996-05-28

    申请号:US378846

    申请日:1995-01-26

    IPC分类号: H04L27/26 H04J1/14 H04J1/16

    摘要: In a communication system that utilizes DMT technology to couple a primary site (102) to a plurality of secondary sites (104-108), carrier channel allocations may be updated as follows. At periodic intervals, the primary site requests updating bit loading information from the secondary sites. Upon receiving the updated bit loading information, the primary site (102) determines an updated call bit loading table for each active call. From this, the primary site (102) determines whether current carrier channel allocation provides sufficient bandwidth. When the current carrier channel allocation does not provide the sufficient bandwidth, the primary site modifies the current carrier channel allocation to meet the bandwidth requirements.

    摘要翻译: 在利用DMT技术将主站点(102)耦合到多个次要站点(104-108)的通信系统中,可以如下更新载波信道分配。 在主要站点周期性地,请求从次要站点更新位加载信息。 一旦接收到更新的位加载信息,主站点(102)为每个活动呼叫确定更新的呼叫位加载表。 由此,主站点(102)确定当前载波信道分配是否提供足够的带宽。 当当前载波信道分配不能提供足够的带宽时,主站修改当前载波信道分配以满足带宽要求。

    System and method for reliably communicating telecommunication information
    9.
    发明授权
    System and method for reliably communicating telecommunication information 有权
    电信信息可靠通信的系统和方法

    公开(公告)号:US06996134B1

    公开(公告)日:2006-02-07

    申请号:US09906914

    申请日:2001-07-16

    IPC分类号: H04J3/04

    摘要: A method reliably communicates content for multiple subscriber lines via a single physical transmission medium between a telecommunication gateway and equipment at a customer location. In that method, content for two or more subscriber lines of the customer location is received and converted into packetized data for network communications and/or multiplexed to form an added-main-line (AML) signal that includes power. The packetized data or the AML signal is communicated between the customer location and the telecommunication gateway via the single physical transmission medium. External power can be used to extract the content for the two or more subscriber lines from the packetized data in a primary mode of operation, and the power from the AML signal can be used to extract the content for the two or more subscriber lines from the AML signal in a backup mode of operation.

    摘要翻译: 方法通过电信网关和客户位置的设备之间的单个物理传输介质可靠地传送多个用户线的内容。 在该方法中,客户位置的两个或多个用户线的内容被接收并转换成用于网络通信的分组数据和/或多路复用以形成包括功率的附加主线(AML)信号。 分组数据或AML信号经由单个物理传输介质在客户位置和电信网关之间进行通信。 可以使用外部功率从主要操作模式中的分组化数据中提取两个或多个用户线路的内容,并且来自AML信号的功率可以用于从两个或更多个用户线路的内容中提取 AML信号处于备用操作模式。

    System and method for interfacing telephony voice signals with a broadband access network
    10.
    发明授权
    System and method for interfacing telephony voice signals with a broadband access network 有权
    将电话语音信号与宽带接入网接口的系统和方法

    公开(公告)号:US06879667B1

    公开(公告)日:2005-04-12

    申请号:US10131121

    申请日:2002-04-23

    IPC分类号: H04L12/66 H04M1/64 H04M7/00

    CPC分类号: H04M7/125 H04L12/66

    摘要: A voice gateway (18) in a telecommunications network (1) includes a plurality of telephony port modules (102). Each telephony port module (102) receives telephony voice signals from a public switched telephony network (13). Each telephony port module (102) includes one or more digital signal processors (110) that perform one or more processing functions on the telephony voice signals. A particular telephony port module (102) may receive a telephony voice signal and use its associated digital signal processor (110) to process the received telephony voice signal or transfer the received telephony voice signal for processing to any digital signal processor (110) on any telephony port module (102). Telephony signals may also be transferred for processing to digital signal processors (110) on another voice gateway (18) in a voice gateway system.

    摘要翻译: 电信网络(1)中的语音网关(18)包括多个电话端口模块(102)。 每个电话端口模块(102)从公共交换电话网络(13)接收电话语音信号。 每个电话端口模块(102)包括在电话语音信号上执行一个或多个处理功能的一个或多个数字信号处理器(110)。 特定电话端口模块(102)可以接收电话语音信号并使用其相关联的数字信号处理器(110)来处理所接收的电话语音信号或者将所接收的电话语音信号传送到任何数字信号处理器(110) 电话端口模块(102)。 也可以将电话信号传送到语音网关系统中另一语音网关(18)上的数字信号处理器(110)进行处理。