发明名称 |
Radio communication system |
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.
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申请公布号 |
US8311146(B2) |
申请公布日期 |
2012.11.13 |
申请号 |
US20080529346 |
申请日期 |
2008.03.04 |
申请人 |
FUJIMURA AKINORI;SOGABE YASUSHI;ISHIZU FUMIO;TAKAGI TADASHI;NAKASE HIROYUKI;TSUBOUCHI KAZUO;KAMEDA SUGURU;OSHIMA SHOICHI;MITSUBISHI ELECTRIC CORPORATION;TOHOKU UNIVERSITY |
发明人 |
FUJIMURA AKINORI;SOGABE YASUSHI;ISHIZU FUMIO;TAKAGI TADASHI;NAKASE HIROYUKI;TSUBOUCHI KAZUO;KAMEDA SUGURU;OSHIMA SHOICHI |
分类号 |
H04L27/00 |
主分类号 |
H04L27/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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