Electric Powerline Networking for a Smart Home

Routers and switches will be utilized to route network signals to all areas of this large network. Telephony systems will be introduced to serve the VOIP located at each location to assist with communication needs. Wireless technologies will also be needed to assist with mobility and other devices such as printers, laptops, fax machines, etc. Lastly, a physical firewall will be enforced at each location to protect the network from internal and external intruders.

It is in most cases used to connect multiple local area networks together to form a bigger network.

When setting up a LAN the architecture that you decide to choose is important. There are several factors that are decided when choosing said architecture, some of these being network speeds, types of cables, and access control mechanisms like collision detection (Team, 2011). The most common on in today’s LANs is Ethernet. These can be either wireless, wired, or a hybrid of both.

Ethernet is typically the technology that is used to allow computers locally to communicate with one another. Computers that are close to each other they are connected by Ethernet.

This created physical connection between PC’s and the network line. Connected data’s are transporting data’s through the network. Cable is a medium through which information usually moves to one network to another network.

A typical problem in OFDM based systems is a high Peak-to-Average Power Ratio (PAPR). The available RF power amplifiers usually have a limited linear dynamic range. This is not a problem for constant amplitude signals, however, in OFDM, due to IFFT operation, some of the sub-carriers add constructively to large amplitudes while others add destructively. The amplitude of the signals thus varies randomly and for large amplitude signals, non-linear amplifications cause errors. Therefore, error correction codes are employed. In HiperLan2, the data is coded with a convolutional encoder of rate 1/2. The convolutional encoder uses the industry-standard generator polynomials, g0 = 1338 and g1 = 1718, and is shown in Figure 4.3. The bit denoted as “A” is the first output from the encoder while the bit denoted “B” is the second one. Higher code rates are derived via puncturing. In puncturing, some of the encoded bits in the transmitter are removed

such an IDFT operation. It is such efficient digital realization of the OFDM transmitter that

communicating over. It could be a modem, a network card, a radio transmitter, or a router.

Most business networks today use switches to connect computers, printers and servers within a building or campus. A switch serves as a controller, enabling networked devices to talk to each other efficiently. Routers, on the other hand, are a much more sophisticated piece of technology. They are small like a switch and look like modems in which multiple nodes can be connected. Today’s routers are actually designed for the purpose of connecting multiple ‘area networks’ (both local and wide). In terms of the internet, routers actually serve as a temporary destination for network traffic. Routers are capable of transmitting and receiving data packets but will actually ‘read’ the packet to get its IP address for determining the packet’s destination. Unlike the switch, routers are capable of joining the multiple networks together; in the case of Kudler Fine Foods, their three store locations. “Cable is the medium through which information usually moves from one network device to another. There are several types of cable which are commonly used with LANs. In some cases, a network will utilize only one type of cable, other networks will use a variety of cable types. The type of cable chosen for a network is related to the network's topology, protocol, and size.” (FCITC, 1997) There are four basic types of cable: Unshielded Twisted Pair (UTP), Shielded Twisted Pair (STP), Coaxial Cable, and Fiber Optic Cable. Unshielded twisted pair can range from basic telephone-grade wiring to high-speed cabling. This cable consist of four pairs of wires inside the outer covering each pair twisted with a different number of twists per inch to reduce/eliminate interference from adjacent pair or other devices. The tighter the twisting the higher data rates it supports but it also will increase the cost of the cable. Shielded twisted pair cables are actually shielded from radio and electrical frequencies and

1. Drawings showing a map of cable runs and placement of wiring rooms for networking devices

|potential to overload sockets. (Electricity Regs) |sockets/network connection under or on table centrally. |Immediate |

The LAN setup in Atlanta for the headquarters and engineering buildings will use a logical choice of routers and Ethernet cables. Using routers and Ethernet cables will provide speedy

Physical media is what physically connects the computers connected on the internet. For this network two physical media will be used to allow access to the application layers of the system. The coaxial cables will be used to create a WAN. While a wireless protocol will be used in allowing users to roam within the network. A LAN will be represented as follows;

Power over Ethernet or PoE is a technology that dispense electrical power and data transmission to devices, such as IP cameras or phones, access points wireless or bluetooth. PoE devices that are placed in remote locations stop not only the need for power outlets, but also cut down the installation costs and enable the network devices to be adaptable in that region. Consumers and vendors of IP phones were either supplying local power through an AC (alternating current) electrical outlet or using non-standards based proprietary solutions to provide inline powering. The release of 802.3af came

A Home Area Network is an interconnection in which some networking devices are connected with each other for sharing resources between them with the help of internet. The main advantage of Home Area Network is that you can share different type of content i.e. videos, audios etc. among different users. A computer with large storage memory can be used as server which can be easily accessed by the clients and users can easily access the data whenever they wanted to access. As in Home Area Network everything i.e. Resources, Data, Information etc. is shared so each user can use devices like Printers, Scanners which will be very cheap. Also another main advantage of Home Area Network is that there is no need to buy several different Public IP Address’s for different devices, administrator of network can only have single Public IP Address and assign this public IP address to a modem or a router, while a modem or a router in turn assigns a private IP address to each device to access the internet.