发明名称 |
Data transfer method and system in low voltage networks |
摘要 |
This invention relates to a method for data transmission in two-way communication via low-voltage systems that are linked to a higher order telecommunication network. Data transmission takes place within the low-voltage system at a high-frequency range of up to 30 MHz using band spreading of data signals and a transmit level below the specified radio interference or noise voltage limit, in that said band-spread data is given a direction coding to specify a logical direction within the low-voltage system using different sequences of a family of pseudo-random numbers to enable multiple-user operation, and in that the binary sequences of data with their user-specific spreading and direction-specific coding are identified by correlation using specified sequences at attenuation-dependent intervals within the low-voltage system, then said data sequences are regenerated and assigned new direction codes for forwarding. |
申请公布号 |
AU4549097(A) |
申请公布日期 |
1998.10.22 |
申请号 |
AU19970045490 |
申请日期 |
1997.09.09 |
申请人 |
BERLINER KRAFT- UND LICHT (BEWAG)-AKTIENGESELLSCHAFT |
发明人 |
FRANK BRANDT;FRANK LUKANEK;CHRISTIAN HENSEN;WOLFGANG SCHULZ;KAY SCHOENFELDT |
分类号 |
H04J13/00;H04B3/54;H04B3/58 |
主分类号 |
H04J13/00 |
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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