专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5987060A System and method of radio communications with an up-down digital signal link 失效
标题翻译：具有上拉数字信号链路的无线电通信的系统和方法
公开(公告)号：US5987060A
公开(公告)日：1999-11-16
申请号：US874661
申请日：1997-06-13
申请人： Jean-Francois Grenon , Gary Allen Martek , Patric McDonald , Timothy Patrick Murphy , Colin J. R. Pallemaerts , Jerome Prismantas , F. Roland Svensson
发明人： Jean-Francois Grenon , Gary Allen Martek , Patric McDonald , Timothy Patrick Murphy , Colin J. R. Pallemaerts , Jerome Prismantas , F. Roland Svensson
IPC分类号： H04B1/00 , H04B1/38 , G01R31/08 , H04M1/24
CPC分类号： H04B1/38 , H04B1/00
摘要： The invention provides radio communications with an up-down signal link. In accordance with the purpose of the invention, as embodied and broadly described herein, the invention is directed to a method, system and computer readable medium with program instructions (hereafter collectively referred to as "the invention"). The invention includes receiving a downstream signal in a receiver portion of an outdoor unit, producing in the receiver portion of the outdoor unit an intermediate frequency (IF) signal from the downstream signal, and processing the IF signal in the receiver portion of the outdoor unit to produce a clean line code signal. The invention further includes processing the clean line code signal in the receiver portion of the outdoor unit to produce a modulated signal, and providing the modulated signal via an interface portion of the down-link to an indoor unit, wherein the producing and processing, respectively, of the IF, clean line code and modulated signals in the outdoor unit provides a high, constant signal-to-noise ratio on the down-link, and wherein the modulated signal is converted to a binary signal in the indoor unit. The invention additionally includes providing an upstream signal over an up-link to a transmitter portion of the outdoor unit, and selecting a component of the upstream signal for transmission by the outdoor unit. One aspect of the invention also includes measuring in the receiver portion of the outdoor unit a power level of the received downstream signal, wherein the measured power level is unaffected by characteristics of the down-link. Moreover, the invention includes providing loop-back connections in the indoor and outdoor units for automated testing of the indoor and outdoor units.
摘要翻译：本发明提供具有上行信号链路的无线电通信。根据本发明的目的，如本文所体现和广泛描述的，本发明涉及具有程序指令（以下统称为“本发明”）的方法，系统和计算机可读介质。本发明包括在室外单元的接收机部分中接收下行信号，在室外机的接收机部分产生来自下行信号的中频（IF）信号，并处理室外单元的接收机部分中的IF信号以产生干净的线路码信号。本发明还包括处理室外单元的接收机部分中的干线代码信号以产生调制信号，并且经由下行链路的接口部分将调制信号提供给室内单元，其中分别产生和处理在室外单元中的IF，干线代码和调制信号在下行链路上提供高，恒定的信噪比，并且其中调制信号在室内单元中被转换为二进制信号。本发明还包括通过上行链路提供到室外单元的发射机部分的上行信号，并且选择上行信号的分量以供室外机传输。本发明的一个方面还包括在室外机的接收机部分中测量所接收的下行信号的功率电平，其中所测量的功率电平不受下行链路特性的影响。此外，本发明包括在室内和室外单元中提供环回连接，用于室内和室外单元的自动测试。

IPRDB

热门服务

关于我们

友情链接

联系方式