发明名称 |
RADIO COMMUNICAITON SYSTEM |
摘要 |
PURPOSE:To provide communication with the same transmission quality as that of a reproduction relay system by compensating added adjacent channel passing interference comprehensively by a reproduction radio station provided with a demodulator and a wave equalizer in a hybrid relay system in which a non-reproduction repeater station is provided between a transmission radio station and a reproduction radio station. CONSTITUTION:Frequency converters 12-20 which select all the output signals of a heterodyne upward or downward for plural transmission/reception local signals used in a frequency conversion function, a reference frequency oscillator 1, and phase synchronous oscillators 9-11 which generate the plural transmission/ reception local signals used in frequency conversion based on the output signal of the oscillator 1 and synchronize the transmission/reception local signals of all the systems in the non-reproduction repeater station 145 are provided in the non-reproduction repeater station 145, and a noise compensating means which compensates the addition of an interference noise generated at the non- reproduction repeater station 145 comprehensively by the wave equalizers 141-143 setting the adjacent channel passing interference so as to be assumed as multipass interference is provided in the reproduction radio station 146. |
申请公布号 |
JPH06125283(A) |
申请公布日期 |
1994.05.06 |
申请号 |
JP19920296662 |
申请日期 |
1992.10.09 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
KAGAMI OSAMU;WATANABE KAZUJI |
分类号 |
H04B3/06;H04B7/005;H04B7/15;H04J1/04 |
主分类号 |
H04B3/06 |
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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