Electronics Telecommunications

Broadband powerline communications networks: network design by Halid Hrasnica, Abdelfatteh Haidine, Ralf Lehnert

By Halid Hrasnica, Abdelfatteh Haidine, Ralf Lehnert

Broadband Powerline Communications: community layout covers the functions of broadband PLC platforms in low-voltage offer networks, a promising candidate for the belief of cost-efficient options for "last mile" communications networks. there are various actions surrounding the improvement and alertness of PLC expertise within the entry region, fairly as a result of robust curiosity of recent community companies after the deregulation of telecommunications marketplace. these days, there aren't any latest criteria for broadband PLC networks, which use a frequency variety as much as 30 MHz. This ebook comprises suitable and well timed information about broadband PLC platforms and particularly PLC entry networks and contributions to the layout elements of broadband PLC entry structures and their community elements.

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Extra resources for Broadband powerline communications networks: network design

Sample text

On the other hand, an in-home PLC network can be connected to the access networks provided by different network operators as well. Thus, the users of the in-home network can also profit from the liberalized telecommunications market. On the other hand, there are also other cost-effective communications systems for the realization of the broadband in-home networks. Wireless LAN (WLAN) systems are already available on the market, providing transmission data rates beyond 20 Mbps (Sec. 3). So, in contrast to the in-home PLC, WLAN allows the mobile usage of telecommunications services, such as cordless telephony, and more convenient handles with various portable communication devices.

Therefore, the indirect connection using a gateway is a frequently used solution for the direct connection of the wall sockets to entire PLC access networks. A gateway is used to divide a PLC access network and an in-home PLC network. It also converts the transmitted signal between the frequencies that are specified for use in the access and in-home areas. Such a gateway is usually placed near the house meter unit (Fig. 17). However, a PLC gateway can provide additional functions that ensure a division of the access and in-home areas on the logical network level too.

Spanned distances are significantly shorter than in the high-voltage networks. The medium-voltage networks are realized as both overhead and underground networks. • Low-voltage (230/400 V, in the USA 110 V) networks supply the end users either as individual customers or as single users of a bigger customer. Their length is usually up to a few hundred meters. In urban areas, low-voltage networks are realized with underground cables, whereas in rural areas they exist usually as overhead networks. 7 Structure of electrical supply networks In-home electrical installations belong to the low-voltage network level.

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