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家居布线与家庭组网
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电力线载波家庭以太网的加拿大产品参数...

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多伦多老夫子 发布于: 2003-12-15 23:15 414 次浏览 1 位用户参与讨论
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powerline integrated circuits make use of existing in-home AC electrical wires for transmitting digital data at high speed. The AC powerline network can be a harsh environment for data communication. To compensate,It uses orthogonal frequency-division multiplexing (OFDM) in the 4.5 to 21 MHz band and a sophisticated forward error correction scheme to provide reliable data transmission. It'S powerline chips also address network security risks by encrypting data to create a private Logical Network in the home. Password-bound encryption keys, private to the home network, are used to encrypt each message as it is sent and decrypt data as it is received. Even if data is intercepted outside the home, it remains secure. There are a number of features that distinguish It'S solution: Industry Standard ~ IT’s OFDM-based semiconductors are compatible with the HomePlug Powerline specification, the industry standard for powerline home networking. Applications ~ IT's integrated circuits are an ideal solution for a broad range of networking, entertainment and computer products such as network cards, PC motherboards, network adapters, cable and DSL modems, MP3 players, jukeboxes, and Internet appliances. Capabilities ~ IT's robust technology not only supports networking at Ethernet-class data rates, but also supports voice over IP (VoIP), Quality of Service (QoS) and streaming media. Speed ~ IT's technology permits data transfer rates at 10 Mbps Ethernet-class speeds using ordinary in-home electrical wires. Future products will offer orders of magnitude performance improvements while maintaining full backward compatibility. Cost ~ IT offers manufacturers a highly integrated cost-effective HomePlug implementation through its powerline integrated circuits. Manufacturers can now build powerline home networking products with low parts count, and unparalleled cost and performance benefits. Technical Specifications PHY-layer Orthogonal Frequency Division Multiplexing (OFDM) 84 carriers, in 4.5 MHz to 21 MHz band Carrier Modulation — DBPSK, DQPSK, ROBO Up to 14 Mbps data rate Automatic channel adaptation Forward Error Correction Packet based transmission In-band jammer immunity MAC-layer Carrier sense multiple access with collision avoidance — CSMA/CA QoS priority classes, contention resolution and latency control to support low latency multimedia and VoIP applications Unicast, multi-cast, broadcast transmissions Privacy ensured using 56-bit DES encryption
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tongyi 发表于 2003-12-16 08:28:00
我给你专门弄一个贴子,你的关于电力载波的资料发到这一个贴子里面好不好。
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