into a signal of QAM modulated OFDM sub-carriers that is transmitted over a coax cable and converted back to data packets via an ethernet connection again. In effect it replicates a direct ethernet connection but with some added, distinct advantages. ITU G.hn is a next-generation, unified coaxial, phone line and power line home networking standard. Even if the main target for this standard is in-home networks, the same technology can also be used in access networks when the access features are implemented on top of the standard-based solution. Compared to all other Coax technologies, G.hn wave 2 has more bandwidth, lower latency, fewer errors and uses a more manageable frequency. It also compares well to fibre solutions. It can be used with most existing TV solutions without channel reallocation and the G.hn wave 2 technology offers a data rate of 1.6 gigabit per second (1.6 Gbps). The G.hn link between the EoC controller and the end points can be limited by other factors such as noise and attenuation but generally will maintain a link speed of up to 1.6 Gbps. The ethernet interface will normally have a limit of 1 gigabit per second (1 Gbps). As a consequence, the max throughput of an EoC system is 1 Gbps. Normally an Internet connection will have a download (DL) and an upload (UL) speed. i.e: 50 / 10 Mbps. G.hn wave 2 bandwidth is 1,600 Mbps total (simplex), and this will be
and any end points. It doesn’t matter whether the end points are connected via a star-shaped coaxial distribution or via a tree and branch structure, they will still connect to the EoC controller. The G.hn signal becomes available in all connected rooms/flats at any end point position to reproduce the incoming speed at the RJ45 Ethernet Port of the end point whilst maintaining any TV signal on its TV Out Port. If VHF radio channels below 200 MHz are still required, these frequency ranges can be masked out by in-built electronic notch filtering in the EoC controller. These frequencies will then not be used for data transmission (it should be noted that the achievable data rate will decrease as a result). However, test measurements have shown, that even if only a frequency range of around 85 MHz of the normal 198 MHz is available, a symmetrical net data throughput of 550 Mbit/s is still possible. Latency too is minimal at ~ 1 ms. To maximise the performance of any EoC system it is recommended to “clear” the frequency band between 2 to 200 MHz and wherever possible only use outlet plates that do not have built-in filtering to ensure this frequency range passes to the end point unhindered, ensuring maximum bandwidth and throughput is achieved. What is G.hn Wave 2 Technology? G.hn is a protocol and ITU Standard, which when employed as EoC basically converts data packets from an ethernet connection
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