Common receive module for a programmable digital radio
    1.
    发明授权
    Common receive module for a programmable digital radio 失效
    用于可编程数字无线电的通用接收模块

    公开(公告)号:US5859878A

    公开(公告)日:1999-01-12

    申请号:US528206

    申请日:1995-08-31

    摘要: A digital submodule is included in a software programmable common receive module for receiving IF signals and producing a serial bit stream. The digital submodule is programmable based on a selected application of a plurality of radio applications and, if present, a selected function of a plurality of functions of the selected radio application. The digital submodule may include an analog to digital converter for converting IF signals received from an analog submodule into digital signals. The digital signals are supplied to a programmable signal processing unit which is configured, according to the selected radio application and, if present, the selected function, to perform control functions, processing and analysis of the digital signals and generate output signals. The output signals are then formatted by a formatting unit producing formatted digital signals. The formatted digital signals are then supplied to a system bus. The programmable signal processing unit may include a digital downconverter for selective use depending on the selected application of radio communication, for generating a base signal. Additionally, a central processing unit is included to perform further signal processing for selected radio application.

    摘要翻译: 数字子模块包括在用于接收IF信号并产生串行比特流的软件可编程公共接收模块中。 数字子模块可以基于多个无线电应用的选定应用以及(如果存在)所选择的无线电应用的多个功能的选定功能来编程。 数字子模块可以包括用于将从模拟子模块接收的IF信号转换为数字信号的模数转换器。 数字信号被提供给可编程信号处理单元,该可编程信号处理单元根据所选择的无线电应用和所选择的功能被配置,以执行数字信号的控制功能,处理和分析并产生输出信号。 然后通过产生格式化的数字信号的格式化单元格式化输出信号。 然后将格式化的数字信号提供给系统总线。 可编程信号处理单元可以包括用于选择性地使用的数字下变频器,这取决于所选择的无线电通信的应用,用于产生基本信号。 另外,包括中央处理单元以对选定的无线电应用执行进一步的信号处理。

    Common transmit module for a programmable digital radio
    2.
    发明授权
    Common transmit module for a programmable digital radio 失效
    用于可编程数字无线电的通用发射模块

    公开(公告)号:US5867535A

    公开(公告)日:1999-02-02

    申请号:US522058

    申请日:1995-08-31

    摘要: A common transmit module of a programmable digital radio has a digital submodule which receives a bit stream and produces a modulated IF signal, and an analog submodule which receives the modulated IF signal and converts the modulated IF signal to a frequency corresponding to a specific type of radio function. The digital submodule includes (a) a sequential/parallel instruction set processor for signal processing and control, (b) a reconfigurable format unit, and (c) a modulator which receives the output signals of the reconfigurable format unit and produces the modulated oscillation signal. The analog submodule includes (a) a tunable local oscillator that produces a tunable local oscillation signal, (b) fixed local oscillators that produce fixed local oscillation signals, and (c) a mixing unit that receives the modulated IF signal, the tunable local oscillation signal and the fixed local oscillation signals, selectively mixes the fixed local oscillation signals with the modulated oscillation signal to produce non-final IF signals, and mixes a non-final IF signal with the tunable local oscillation signal to produce a final converted signal for transmission at the frequency corresponding to the specific type of radio function.

    摘要翻译: 可编程数字无线电的公共发射模块具有数字子模块,其接收比特流并产生调制的IF信号,以及模拟子模块,其接收调制的IF信号并将调制的IF信号转换成对应于特定类型的 收音功能。 数字子模块包括(a)用于信号处理和控制的顺序/并行指令集处理器,(b)可重构格式单元,以及(c)调制器,其接收可重构格式单元的输出信号并产生调制振荡信号 。 模拟子模块包括(a)产生可调谐本地振荡信号的可调谐本地振荡器,(b)产生固定本地振荡信号的固定本地振荡器,以及(c)接收调制IF信号的混合单元,可调谐的本地振荡 信号和固定的本地振荡信号,选择性地将固定的本地振荡信号与调制的振荡信号混频以产生非最终的IF信号,并且将非最终IF信号与可调本地振荡信号混合以产生用于传输的最终转换信号 在对应于特定类型的无线电功能的频率。

    Wide band radio-frequency converter having multiple use of intermediate
frequency translators
    3.
    发明授权
    Wide band radio-frequency converter having multiple use of intermediate frequency translators 失效
    具有多次使用中频转换器的宽带射频转换器

    公开(公告)号:US5548839A

    公开(公告)日:1996-08-20

    申请号:US322513

    申请日:1994-10-14

    IPC分类号: H03D7/16 H03J5/24 H04B1/26

    CPC分类号: H03J5/242 H03D7/161

    摘要: A wideband RF-to-IF frequency converter providing multiple use of frequency conversion components for many different types of RF input signals. In specific examples, many different types of signals for communication, navigation, and for interrogation are processed through at least partly common frequency-conversion channels. Such RF input signals in the range from approximately 2 MHz to 2,000 MHz are converted to output IF frequencies, such as 1 MHz and 30 MHz, for further processing in the common receiver. Some narrow band signals, after conversion to IF, are subjected to off-center filtering in relatively broadband IF filters. Input RF filters are not used. Among several frequency conversion stages, only one of the local oscillator signals is tunable; but it is made tunable in relatively small, precise steps by using a double phase-locked loop arrangement in the frequency synthesizer.

    摘要翻译: 宽带RF至IF频率转换器为多种不同类型的RF输入信号提供多种频率转换组件。 在具体示例中,用于通信,导航和询问的许多不同类型的信号通过至少部分共同的频率转换信道来处理。 在大约2MHz到2,000MHz的范围内的这样的RF输入信号被转换成诸如1MHz和30MHz的输出IF频率,用于在公共接收机中的进一步处理。 转换成IF后的一些窄带信号在相对较宽的IF滤波器中进行偏心滤波。 不使用输入RF滤波器。 在多个频率转换阶段中,只有一个本地振荡器信号是可调谐的; 但是通过使用频率合成器中的双锁相环布置,可以在相对较小,精确的步骤中进行可调谐。

    Method And Apparatus For Cellular Communication Over Data Networks
    4.
    发明申请
    Method And Apparatus For Cellular Communication Over Data Networks 有权
    数据网络蜂窝通信的方法与装置

    公开(公告)号:US20110194548A1

    公开(公告)日:2011-08-11

    申请号:US13089351

    申请日:2011-04-19

    IPC分类号: H04W4/00

    摘要: Cellular signals or other wireless signals/messages are introduced into a building or to an outside location by transmitting packets corresponding to those signals over a data network and low cost cables to designated locations within the data network. Once the designated packets containing the signals reach the destination, they are then broadcast over the air to a terminal capable of receiving the wireless message. In a first embodiment, an in-building gigabit Ethernet network, such as that currently existing presently in many buildings, is used to distribute radio signals indoors. Instead of transmitting the radio signals over the air from a repeater connected to a base station, coded baseband signals generated by the coding processor (e.g., a CDMA Modem Unit) in the base station are packetized and sent over the Ethernet network to radio processing equipment and antennas distributed throughout the building. The radio processing equipment strips the packet headers from the baseband signal packets so those signals can be broadcast via the antennas to one or more mobile terminals.

    摘要翻译: 蜂窝信号或其他无线信号/消息通过在数据网络上传送与这些信号相对应的数据包和低成本电缆到数据网络中的指定位置而被引入建筑物或外部位置。 一旦包含信号的指定分组到达目的地,则它们然后通过空中广播到能够接收无线消息的终端。 在第一实施例中,使用诸如目前在许多建筑物中当前存在的建筑物内的千兆以太网网络来在室内分配无线电信号。 代替从连接到基站的中继器通过空中传送无线电信号,由基站中的编码处理器(例如,CDMA调制解调器单元)生成的编码基带信号被分组并通过以太网发送到无线电处理设备 和分布在整个建筑物的天线。 无线电处理设备从基带信号分组剥离分组报头,从而可以经由天线将信号广播到一个或多个移动终端。