By Halid Hrasnica, Abdelfatteh Haidine, Ralf Lehnert
Broadband Powerline Communications: community layout covers the functions of broadband PLC platforms in low-voltage provide networks, a promising candidate for the conclusion of low-budget recommendations for "last mile" communications networks. there are numerous actions surrounding the improvement and alertness of PLC know-how within the entry region, rather due to robust curiosity of recent community companies after the deregulation of telecommunications marketplace. these days, there are not any latest criteria for broadband PLC networks, which use a frequency variety as much as 30 MHz. This ebook comprises proper and well timed information about broadband PLC platforms and particularly PLC entry networks and contributions to the layout features of broadband PLC entry platforms and their community parts.
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Extra info for Broadband powerline communications networks: network design
Low-voltage PLC technology is used for the realization of the so-called “last mile” of telecommunication access networks. Because of the importance of telecommunication access, current development of broadband PLC technology is mostly directed toward applications in access networks including the in-home area. In contrast to narrowband PLC systems, there are no speciﬁed standards that apply to broadband PLC networks (Sec. 3). 1 Structure of PLC Access Networks The low-voltage supply networks consist of a transformer unit and a number of power supply cables linking the end users, which are connected to the network over meter units.
Nowadays, the MV PLC is mainly applied for the realization of such point-to-point connections. An application of MV PLC is the connection of antennas for various radio systems. In this way, an antenna used for a wireless mobile system (see Fig. 2) can be connected to its base station via a mediumvoltage supply network. 4 Speciﬁc PLC Performance Problems In previous sections, it has been shown that PLC technology presents a cost-effective alternative for the realization of the access networks. On the other hand, electrical supply networks are not designed for communications and therefore, they do not represent a favorable transmission medium.
The HomePlug Powerline Alliance [HomePlug] is a not-for-proﬁt corporation formed to provide a forum for the creation of open speciﬁcations for high-speed home powerline networking products and services. HomePlug is concentrated on in-home PLC solutions and it works close to PLCforum as well. Standardization activities for broadband PLC technology are also included in the work of European Telecommunications Standards Institute (ETSI) and CENELEC. 4 Narrowband PLC The narrowband PLC networks operate within the frequency range speciﬁed by the CENELEC norm (Tab.