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公开(公告)号：US5933448A
公开(公告)日：1999-08-03
申请号：US817653
申请日：1997-04-04
申请人： Keijo Katisko
发明人： Keijo Katisko
摘要： Amplitude and phase errors between branches I and Q of a transceiver utilizing phase quadrature modulation are corrected by preventing propagation of a nominal-frequency signal from a digital part through a loop part and a reception branch to an RSSI indicator by changing the frequency response of a component on the path of the signal. The same indicator that normally measures the payload signal, here measures only undesired signal components. After this, such amplitude and/or phase correction signals are determined with which the measuring result obtained from the indicator reaches the minimum. The resultant correction signals are stored in the memory, and the frequency response of the system is then restored to normal.
摘要翻译： PCT No.PCT / FI96 / 00431 Sec。 371日期1997年04月4日 102（e）日期1997年4月4日PCT提交1996年8月6日PCT公布。 公开号WO97 / 06607 日期1997年2月20日利用相位正交调制的收发器的分支I和Q之间的相位误差通过防止来自数字部分的标称频率信号通过环路部分和接收分支传播到RSSI指示符来校正， 元件在信号路径上的频率响应。 通常测量有效负载信号的相同指示器，这里仅测量不期望的信号分量。 此后，确定从指标获得的测量结果达到最小的幅度和/或相位校正信号。 所得到的校正信号存储在存储器中，然后系统的频率响应恢复正常。
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2.发明授权Method and apparatus for replacing a failed channel unit of a sectored base station, in a cellular radio system, with an additional channel unit 失效用于在蜂窝无线电系统中用附加信道单元替换扇区基站的故障信道单元的方法和装置
公开(公告)号：US5752161A
公开(公告)日：1998-05-12
申请号：US619729
申请日：1996-03-22
申请人： Arto Jantti , Keijo Katisko
发明人： Arto Jantti , Keijo Katisko
摘要： A method for securing the operation of a base station having a radio coverage area divided into at least two sectors, and a base station having antennas, with combiners and branching units, and at least one channel unit for each sector, which allow the base station to establish a radio connection with active radio transceivers currently located in the base station sectors. In the method, the base station is provided with an additional channel unit the traffic capacity of which is selectably switchable to one of the base station sectors. To secure the operation of the base station when one of the channel units fails, the operation of the channel units of the base station is monitored. When one of the channel units fails, the additional channel unit is connected to the antenna of the sector of the failed channel unit by a switch, which connects the antenna attachments of the additional channel unit to the antenna of one sector at a time.
摘要翻译： PCT No.PCT / FI94 / 00424 Sec。 371日期：1996年3月22日 102（e）1996年3月22日PCT PCT 1994年9月22日PCT公布。 第WO95 / 08875号公报 日期1995年3月30日一种用于确保具有划分为至少两个扇区的无线电覆盖区域的基站和具有组合器和分支单元的天线基站以及每个扇区的至少一个信道单元的操作的方法， 这允许基站与当前位于基站扇区中的主动无线电收发器建立无线电连接。 在该方法中，基站具有其业务容量可选地切换到基站扇区之一的附加信道单元。 为了在一个信道单元发生故障时确保基站的操作，监视基站的信道单元的操作。 当通道单元之一发生故障时，附加通道单元通过开关连接到故障通道单元的扇区的天线，该开关将附加通道单元的天线附件一次连接到一个扇区的天线。
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