发明名称 |
METHOD FOR TRANSMITTING AND RECEIVING QUADRATURE AMPLITUDE MODULATION SIGNALS, A SYSTEM FOR CARRYING OUT SAID METHOD, A MACHINE-READABLE CARRIER AND THE USE OF A METHOD FOR SYNCHRONOUSLY RECEIVING QUADRATURE AMPLITUDE MODULATION SIGNALS |
摘要 |
The invention relates to signal transmission. The use of the invention for transmitting and receiving quadrature amplitude modulation signals on unlicensed frequency bands makes it possible to lower a demodulation threshold owing to a low synchronisation threshold. The inventive method consists in extending a burst of M m-level quadrature amplitude modulation signals with the aid of two pseudo-random sequences, one of which is periodically inverted in some bursts, thereby making it possible to extract, on a receiving side, the quadrature amplitude modulation signal components corresponding to a meander signal of the pseudo-random sequence inversion (the frequency of which is known). The inventive method is carried out by means of a corresponding system in a hardware and software mode. Moreover, said method can be used for synchronising the reception of quadrature amplitude modulation signals.
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申请公布号 |
WO2009008770(A2) |
申请公布日期 |
2009.01.15 |
申请号 |
WO2008RU00404 |
申请日期 |
2008.06.30 |
申请人 |
DOUNAEV, IGOR BORISOVICH |
发明人 |
DOUNAEV, IGOR BORISOVICH;LETUNOV, LEONID ALEXEEVICH;GRIGORIEV, ALEXANDER VLADIMIROVICH |
分类号 |
H04L27/34;H04J13/00 |
主分类号 |
H04L27/34 |
代理机构 |
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地址 |
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