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公开(公告)号:EP2129069A1
公开(公告)日:2009-12-02
申请号:EP08721273.4
申请日:2008-03-04
发明人: FUJIMURA, Akinori , SOGABE, Yasushi , ISHIZU, Fumio , TAKAGI, Tadashi , NAKASE, Hiroyuki , TSUBOUCHI, Kazuo , KAMEDA, Suguru , OSHIMA, Shoichi
IPC分类号: H04L27/26
CPC分类号: H04L27/2637 , H04L27/2014 , H04L27/2614 , H04L27/2653 , H04L27/2662 , H04L27/2691
摘要: A transmission device (10) includes: a series/parallel converter (11); an MSK modulator (31) for modulating a signal on a channel basis; a D/A converter (13); a frequency converter (14a) for conversion into different carrier frequencies; a synchronization circuit (32); an amplifier (15); a multiplexer (16) for multiplexing amplification signals; and an antenna (19). A reception device (20) includes: an antenna (21); a demultiplexer (22); a frequency converter (23) for converting signal demultiplexed on a channel basis into a baseband frequency; a low-pass filter (33) for removing a higher-harmonic component of the signal; an A/D converter (24); a digital filter (36) for extracting a main wave component from the digital signal; a sampling point detection circuit (35a) for detecting a sampling point from the main wave component; an MSK demodulator (34a) for reproducing and demodulating a symbol point based on detection information by an interpolation process; and a parallel/series converter (26) for restoring an original signal from the demodulated signal.
摘要翻译: 发送装置(10)包括:串/并转换器(11); 一个MSK调制器(31),用于以信道为基础调制一个信号; 一个D / A转换器(13); 一个变频器(14a),用于转换成不同的载波频率; 同步电路(32); 放大器(15); 多路复用器(16),用于多路复用放大信号; 和天线(19)。 接收装置(20)包括:天线(21); 解复用器(22); 一个频率转换器(23),用于将按信道解复用的信号转换为基带频率; 低通滤波器(33),用于去除信号的高次谐波分量; 一个A / D转换器(24); 数字滤波器(36),用于从数字信号中提取主波分量; 采样点检测电路(35a),用于从主波分量中检测采样点; MSK解调器(34a),用于通过内插处理根据检测信息再现和解调符号点; 和一个并行/串行转换器(26),用于恢复来自解调信号的原始信号。