WIRELESS BASE STATION NEIGHBOR DISCOVERY IN A COMMUNICATION SYSTEM, SUCH AS A SYSTEM EMPLOYING A SHORT-RANGE FREQUENCY HOPPING SCHEME
    12.
    发明申请
    WIRELESS BASE STATION NEIGHBOR DISCOVERY IN A COMMUNICATION SYSTEM, SUCH AS A SYSTEM EMPLOYING A SHORT-RANGE FREQUENCY HOPPING SCHEME 有权
    无线基站在通信系统中发现,如采用短距离频率抢占方案的系统

    公开(公告)号:US20070191016A1

    公开(公告)日:2007-08-16

    申请号:US11674298

    申请日:2007-02-13

    IPC分类号: H04Q7/20

    摘要: Disclosed embodiments include a method performed by a network access point, such as a short-range wireless communications switch or Bluetooth base station unit, to provide a neighbor list for neighboring short-range wireless communications switches or network access points in a communications network. The method includes, at the short-range wireless switch, sending at least one signal to neighboring wireless devices, wherein sending the signal is done without assistance of a mobile unit or a system controller for the communications network. The method further includes receiving a response signal from at least one neighboring short-range wireless switch, and identifying the one neighboring short-range wireless switch based on the received response signal. Additionally, the method includes providing a neighbor list that identifies the one neighboring short-range wireless switch. Numerous alternative embodiments are also described.

    摘要翻译: 公开的实施例包括由诸如短距离无线通信交换机或蓝牙基站单元之类的网络接入点执行的方法,以提供通信网络中的相邻短距离无线通信交换机或网络接入点的邻居列表。 该方法包括在短距离无线交换机中向相邻无线设备发送至少一个信号,其中发送信号是在没有用于通信网络的移动单元或系统控制器的帮助下完成的。 该方法还包括从至少一个相邻短距离无线交换机接收响应信号,以及基于所接收的响应信号识别一个相邻的短距离无线交换机。 另外,该方法包括提供标识一个相邻短距离无线交换机的邻居列表。 还描述了许多替代实施例。

    Digital signal processing based implementation of a feed forward amplifier
    13.
    发明申请
    Digital signal processing based implementation of a feed forward amplifier 有权
    基于数字信号处理的前馈放大器的实现

    公开(公告)号:US20050012550A1

    公开(公告)日:2005-01-20

    申请号:US10859392

    申请日:2004-06-02

    IPC分类号: H03F1/26 H03F1/32

    CPC分类号: H03F1/26 H03F1/3229

    摘要: A digital signal processing based feed forward amplifier includes a delay circuit which receives a portion of the input signal and generates a delayed input signal. A first analog to digital converter receives another portion of the input signal and generates a digitized input signal. A main amplifier receives the delayed input signal and generates a main amplified signal. A second analog to digital converter receives at least a portion of the main amplified signal and converts it to a digitized main amplified signal. A digital signal processor receives the digitized input signal and the digitized main amplified signal and generates a digitized error signal. The digitized error signal is converted to an analog error signal by a digital to analog converter. An error amplifier receives the analog error signal and amplifies it to generate an amplified error signal. This error signal includes a noise and distortion component which is substantially the same in magnitude as the noise and distortion component of the main amplified signal. The amplified error signal and the main amplified signal are combined so that the noise and distortion components of each subtract, leaving substantially only the amplified desired signal component remaining in the amplified input signal, which is outputted by the feed forward amplifier. A third analog to digital converter converts a portion of the amplified error signal to a digitized amplified error signal, and a fourth analog to digital converter converts a portion of the output signal to a digitized output signal. The digitized output signal and the digitized amplified error signal are provided to the digital signal processor which generates the digitized error signal in response thereto.

    摘要翻译: 基于数字信号处理的前馈放大器包括延迟电路,其接收输入信号的一部分并产生延迟的输入信号。 第一模数转换器接收输入信号的另一部分并产生数字化的输入信号。 主放大器接收延迟输入信号并产生主放大信号。 第二模数转换器接收主放大信号的至少一部分并将其转换为数字化的主放大信号。 数字信号处理器接收数字化的输入信号和数字化的主放大信号并产生数字化的误差信号。 数字化误差信号由数模转换器转换为模拟误差信号。 误差放大器接收模拟误差信号并对其进行放大以产生放大的误差信号。 该误差信号包括与主放大信号的噪声和失真分量基本上相同的噪声和失真分量。 放大的误差信号和主放大信号被组合,使得每个的噪声和失真分量相减,基本上只剩下由前馈放大器输出的被放大的输入信号中放大的期望信号分量。 第三模数转换器将放大的误差信号的一部分转换成数字化的放大误差信号,并且第四模数转换器将输出信号的一部分转换成数字化的输出信号。 数字化输出信号和数字化放大误差信号被提供给数字信号处理器,该数字信号处理器响应于此产生数字化的误差信号。

    Network access communications system and methodology
    14.
    发明授权
    Network access communications system and methodology 失效
    网络接入通信系统和方法

    公开(公告)号:US5949785A

    公开(公告)日:1999-09-07

    申请号:US742114

    申请日:1996-10-31

    申请人: James Beasley

    发明人: James Beasley

    IPC分类号: H04L12/56 H04Q11/04

    摘要: A digital switching system is provided for coupling with one or more external specific physical interface data signal sources regardless of signal protocol, and includes input subsystems for receiving and processing the data signal sources into data cells, a data multiplexer for multiplexing the processed data, an addressable memory for storing the multiplexed data, a queue controller for creating and managing memory queues which store the multiplexed data, a data demultiplexer for demultiplexing the stored multiplexed data in response to the queue controller, and output processors for outputting the demultiplexed data.

    摘要翻译: 提供数字切换系统,用于与一个或多个外部特定物理接口数据信号源耦合,而不管信号协议如何,并且包括用于将数据信号源接收和处理成数据单元的输入子系统,用于多路复用处理数据的数据多路复用器 用于存储复用数据的可寻址存储器,用于创建和管理存储多路复用数据的存储器队列的队列控制器,用于响应于队列控制器解复用存储的复用数据的数据解复用器,以及用于输出解复用数据的输出处理器。

    Wireless base station neighbor discovery in a communication system, such as a system employing a short-range frequency hopping scheme
    15.
    发明授权
    Wireless base station neighbor discovery in a communication system, such as a system employing a short-range frequency hopping scheme 有权
    通信系统中的无线基站邻居发现,例如采用短距离跳频方案的系统

    公开(公告)号:US07546126B2

    公开(公告)日:2009-06-09

    申请号:US11674298

    申请日:2007-02-13

    IPC分类号: H04Q7/20

    摘要: Disclosed embodiments include a method performed by a network access point, such as a short-range wireless communications switch or Bluetooth base station unit, to provide a neighbor list for neighboring short-range wireless communications switches or network access points in a communications network. The method includes, at the short-range wireless switch, sending at least one signal to neighboring wireless devices, wherein sending the signal is done without assistance of a mobile unit or a system controller for the communications network. The method further includes receiving a response signal from at least one neighboring short-range wireless switch, and identifying the one neighboring short-range wireless switch based on the received response signal. Additionally, the method includes providing a neighbor list that identifies the one neighboring short-range wireless switch. Numerous alternative embodiments are also described.

    摘要翻译: 公开的实施例包括由诸如短距离无线通信交换机或蓝牙基站单元之类的网络接入点执行的方法,以提供通信网络中的相邻短距离无线通信交换机或网络接入点的邻居列表。 该方法包括在短距离无线交换机中向相邻无线设备发送至少一个信号,其中发送信号是在没有用于通信网络的移动单元或系统控制器的帮助下完成的。 该方法还包括从至少一个相邻短距离无线交换机接收响应信号,以及基于所接收的响应信号识别一个相邻的短距离无线交换机。 另外,该方法包括提供标识一个相邻短距离无线交换机的邻居列表。 还描述了许多替代实施例。

    Reducing mutual channel interference in frequency-hopping spread spectrum wireless communication systems
    16.
    发明授权
    Reducing mutual channel interference in frequency-hopping spread spectrum wireless communication systems 有权
    减少跳频扩频无线通信系统中的相互干扰

    公开(公告)号:US07292617B2

    公开(公告)日:2007-11-06

    申请号:US10701121

    申请日:2003-11-03

    IPC分类号: H04B1/69

    摘要: A system and method for arbitrating among frequency-hopping spread spectrum communication systems are provided herein. An arbitrator calculates and compares hop frequencies for the communication systems of an area or network using frequency generation parameters received from the communication systems. The comparison identifies impending transmission collisions and collision frequencies for transmission time slots. The arbitrator then selects one of the radios associated with an impending collision to transmit, and suppresses or disables transmissions by non-selected radios during the same transmission time period for that frequency. Thus, the arbitrator minimizes bandwidth lost to co-channel and adjacent channel collisions by reducing or eliminating this mutual interference among the communication systems.

    摘要翻译: 本文提供了一种用于在跳频扩频通信系统之间进行仲裁的系统和方法。 仲裁者使用从通信系统接收的频率产生参数来计算并比较区域或网络的通信系统的跳频。 比较确定传输时隙的即将发生的传输冲突和冲突频率。 仲裁者然后选择与即将发生的冲突相关联的无线电中的一个发射,并且在该频率的相同传输时间段期间,通过非选择的无线电来抑制或禁止传输。 因此,仲裁者通过减少或消除通信系统之间的这种相互干扰来最小化对同信道和相邻信道冲突的带宽损失。

    Digital signal processing based implementation of a feed forward amplifier
    18.
    发明授权
    Digital signal processing based implementation of a feed forward amplifier 有权
    基于数字信号处理的前馈放大器的实现

    公开(公告)号:US07015753B2

    公开(公告)日:2006-03-21

    申请号:US10859392

    申请日:2004-06-02

    IPC分类号: H03F1/26

    CPC分类号: H03F1/26 H03F1/3229

    摘要: A digital signal processing based feed forward amplifier includes a delay circuit which receives a portion of the input signal and generates a delayed input signal. A first analog to digital converter receives another portion of the input signal and generates a digitized input signal. A main amplifier receives the delayed input signal and generates a main amplified signal. A second analog to digital converter receives at least a portion of the main amplified signal and converts it to a digitized main amplified signal. A digital signal processor receives the digitized input signal and the digitized main amplified signal and generates a digitized error signal. The digitized error signal is converted to an analog error signal by a digital to analog converter. An error amplifier receives the analog error signal and amplifies it to generate an amplified error signal. This error signal includes a noise and distortion component which is substantially the same in magnitude as the noise and distortion component of the main amplified signal. The amplified error signal and the main amplified signal are combined so that the noise and distortion components of each subtract, leaving substantially only the amplified desired signal component remaining in the amplified input signal, which is outputted by the feed forward amplifier. A third analog to digital converter converts a portion of the amplified error signal to a digitized amplified error signal, and a fourth analog to digital converter converts a portion of the output signal to a digitized output signal. The digitized output signal and the digitized amplified error signal are provided to the digital signal processor which generates the digitized error signal in response thereto.

    摘要翻译: 基于数字信号处理的前馈放大器包括延迟电路,其接收输入信号的一部分并产生延迟的输入信号。 第一模数转换器接收输入信号的另一部分并产生数字化的输入信号。 主放大器接收延迟输入信号并产生主放大信号。 第二模数转换器接收主放大信号的至少一部分并将其转换为数字化的主放大信号。 数字信号处理器接收数字化的输入信号和数字化的主放大信号并产生数字化的误差信号。 数字化误差信号由数模转换器转换为模拟误差信号。 误差放大器接收模拟误差信号并对其进行放大以产生放大的误差信号。 该误差信号包括与主放大信号的噪声和失真分量基本上相同的噪声和失真分量。 放大的误差信号和主放大信号被组合,使得每个的噪声和失真分量相减,基本上只剩下由前馈放大器输出的被放大的输入信号中放大的期望信号分量。 第三模数转换器将放大的误差信号的一部分转换成数字化的放大误差信号,并且第四模数转换器将输出信号的一部分转换成数字化的输出信号。 数字化输出信号和数字化放大误差信号被提供给数字信号处理器,该数字信号处理器响应于此产生数字化的误差信号。