发明名称 |
MODEM FOR POWER LINE SIGNALLING |
摘要 |
A modem which may operate as a transmitter or receiver, is provided for use on a line carrying an A.C. signal. The modem comprises a pseudorandom code generator which produces a pseudorandom code signal of a frequency an integral multiple of the A.C. signal frequency. Synchronization means synchronizes the code signal with the A.C. signal. Preferably a coherent system is provided in which a data signal involved has a bit rate an integral multiple of the A.C. signal frequency and in which a carrier generator is additionally provided to produce a carrier signal of a frequency an integral multiple of the A.C. signal frequency. In such case, the synchronization means also synchronizes the data bit and carrier signals with the A.C. signal. |
申请公布号 |
AU3812985(A) |
申请公布日期 |
1985.08.01 |
申请号 |
AU19850038129 |
申请日期 |
1985.01.29 |
申请人 |
UNIVERSITY OF BRITISH COLUMBIA, THE |
发明人 |
PETER KENNETH VAN DER GRACHT;ROBERT WELLINGTON DONALDSON |
分类号 |
H04B1/707;H04B3/54 |
主分类号 |
H04B1/707 |
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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