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1. 发明授权

US06707844B1 Synchronous circuit and receiver 失效
标题翻译：同步电路和接收器
公开(公告)号：US06707844B1
公开(公告)日：2004-03-16
申请号：US09481943
申请日：2000-01-13
申请人： Ichiro Imaizumi , Osamu Sato , Hisashi Kawai , Tetsuhiko Miyatani , Takahiro Todate , Kouya Hoshina
发明人： Ichiro Imaizumi , Osamu Sato , Hisashi Kawai , Tetsuhiko Miyatani , Takahiro Todate , Kouya Hoshina
IPC分类号： H04B1707
CPC分类号： H04B1/7093 , H04B1/70735 , H04B2201/70707
摘要： There is disclosed a synchronous circuit and a receiver in which a long code for use in communication can be determined in a short time, and circuit scale can be reduced. Upon receiving input of a data stop signal from a control unit, a matched filter continues to hold the signal held at the time, performs a product sum operation of a spreading code successively inputted from a spreading code generator and the held signal, and successively outputs correlation signals in the synchronous circuit and the receiver.
摘要翻译：公开了一种同步电路和接收器，其中可以在短时间内确定用于通信的长码，并且可以减小电路规模。在从控制单元接收到数据停止信号的输入时，匹配滤波器继续保持当时保持的信号，执行从扩展码发生器连续输入的扩展码和保持信号的乘积和运算，并依次输出同步电路和接收机中的相关信号。

2. 发明授权

US06647056B1 Correlation circuit for spread spectrum communication, demodulation circuit and reception apparatus 失效
标题翻译：扩频通信相关电路，解调电路和接收装置
公开(公告)号：US06647056B1
公开(公告)日：2003-11-11
申请号：US09512063
申请日：2000-02-24
申请人： Ichiro Imaizumi , Kouya Hoshina , Kenjiro Yasunari
发明人： Ichiro Imaizumi , Kouya Hoshina , Kenjiro Yasunari
IPC分类号： H04B169
CPC分类号： H04B1/7093 , H04B1/7095 , H04B2201/70707
摘要： In a conventional correlation circuit for spread spectrum communication, when a sliding correlator is used, much time is required. When a matched filter is used, a problem is that a circuit scale and power consumption are increased. In the present invention, however, there is provided a correlation circuit for spread spectrum communication which minimizes the number of constituting elements, and can reduce the power consumption. In the correlation circuit for spread spectrum communication of the present invention, a spread spectrum received signal is A/D converted and accumulated in a data memory unit by a symbol unit, data rate is converted, and a high-rate MF performs a product sum operation processing at a high rate so that a correlation output is obtained.
摘要翻译：在用于扩展频谱通信的常规相关电路中，当使用滑动相关器时，需要很多时间。当使用匹配滤波器时，问题是电路规模和功耗增加。然而，在本发明中，提供了一种用于扩频通信的相关电路，其使得构成元件的数量最小化，并且可以降低功耗。在本发明的扩频通信用相关电路中，扩频接收信号通过符号单位对数据存储单元进行A / D转换和累积，数据速率被转换，高速率MF执行乘积和以高速率进行运算处理，从而获得相关输出。

3. 发明授权

US06678313B1 Correlation circuit for spread spectrum communication 失效
标题翻译：扩频通信的相关电路
公开(公告)号：US06678313B1
公开(公告)日：2004-01-13
申请号：US09472003
申请日：1999-12-27
申请人： Ichiro Imaizumi , Kouya Hoshina , Kenjiro Yasunari
发明人： Ichiro Imaizumi , Kouya Hoshina , Kenjiro Yasunari
IPC分类号： H04B169
CPC分类号： H04B1/709
摘要： There is disclosed a correlation circuit for spread spectrum communication which reduces the number of constituting elements to attain low power consumption and which can obtain correlation in a short time, to solve a problem that a conventional sliding correlator requires much time to obtain the correlation and that a matched filter increases the power consumption. In the spread spectrum communication correlation circuit, an A/D converter converts a received spread spectrum signal to a digital signal. Under control of a controller, one symbol of signals are written to an S/H circuit with a 16 MHz. clock, shifted for each sample and read to a high-speed correlator from the S/H circuit with a high-speed clock of 1.6 GHz a plurality of times, and the high-speed correlator performs a product sum operation with a spread code with the 1.6 GHz clock. At the same time the reading is performed, the next symbol of signals are written to the S/H circuit.
摘要翻译：公开了一种用于扩频通信的相关电路，其减少了达到低功耗的组成元件的数量，并且可以在短时间内获得相关性，以解决常规滑动相关器需要大量时间来获得相关性的问题，匹配的滤波器增加功耗。在扩频通信相关电路中，A / D转换器将接收的扩频信号转换为数字信号。在控制器的控制下，信号的一个符号被写入到具有16MHz的S / H电路。时钟，对于每个采样移位，并从具有1.6GHz的高速时钟的S / H电路读取高速相关器多次，并且高速相关器用扩展码执行乘积和运算， 1.6 GHz时钟。同时执行读取，信号的下一个符号被写入S / H电路。

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