Performance Evaluation Of A Wimax Testbed

1. Thanks to Wi-Fi technology, this devices can connect wirelessly and seamlessly to one’s existing broadband connection in seconds.

Wireless network infrastructure has become just another connection method for corporate and home users alike. This rapid acceptance can be attributed from:

This is a direct extension of the 802.11b that extends the maximum data rate to 54Mbps, making it possible to serve up to five times as many users. Our Wi-Fi network is based on the IEEE 802.11 b/g standards, which is the most commonly used standard. We have added Wi-Fi access points in our network to give easier access to corporate data and services. Most of the devices in this network, for example the personal computers, smartphones, digital cameras, tablets and digital audio players connected using the Wi-Fi technology. The hotspot will be in the range of 20 meters (66 feet) indoors and a greater range outside.

Week 4 Lab Part 1: Network Traffic Analysis and Baseline Definition & Secure WLAN Solution

In the recent years, wireless technologies have taken a new dimension in the ways society lives. Wireless broadband is available to everyone. Whether the users are at home, driving the car, sitting in the park, and it would even work while people are a pleasure boat ride in the middle of a lake. And because of this, the need to have information at any time and be connected in all places, all the time has been satisfied.

The market for wireless communications has experienced incredible growth over recent years and wireless LANs have rapidly become a very

Municipal Wi-Fi or Municipal wireless network is a step towards making Internet services available to everyone by wireless technology. A geographical area under a municipality is provided with a wireless broadband service in many cities in US. Currently this idea is getting spread around the world. The structure of the wireless network is a mesh network with more than hundreds of routers are installed on the outdoors of the buildings. The network is operated by a wireless ISP. In this report we will discuss about implementation of municipal WiFi in different countries and the status of those implementation.

The 802.11 provides the wireless LAN services for the clients, the access points, and the network connecting them. The association service is used by mobile stations to connect themselves to APs. Reassociation lets a station change its preferred AP. Either the station or the AP may also disassociate, breaking their relationship. Stations must authenticate to use a security scheme before they can send frames via the AP. With WPA2, the AP can talk to an authentication server that has a username and password database to determine if the station is allowed to access the network. Before WPA, WEP is used but it is easy to compromise. The distribution service determines the route for wireless or wired network. The integration service is used when

I measured the growth of a plant in different locations and if the wifi router affects the growth. I measured using a ruler and a thermostat and with the ruler I used (mm). Some observations I made are that the paper towel under the plant next to the router got very dry in three to four hours, and then plant next to the kitchen took one to two days to dry, and lastly the plant in the basement took two to three days. When I changed the distance between the router and plant the one closest to the router did not grow and died in the last three days of the investigation, the plant furthest away from the router grew massively. Some Things that affected my data were that when I was concluding my investigation the plant closest

It’s very important to determine the device and application requirements based on bandwidth, protocols and frequency. In wireless network, bandwidth, protocols and sometime environmental conditions affect the speed of the channel so we need to calculate the aggregate throughputs before designing the network. Today, users carry Wi-Fi devices such as notebooks, laptops, tablets and Smartphone’s so total throughput must be calculated by estimating number of connections rather than the number of the seats. Some common wireless networking standards such as 802.11a/b/g/n invented in the IEEE association must be supported by wireless network. For better performance and for faster devices (802.11n devices), dual-ratio access points should be deployed. Table1 [3] illustrate the different IEEE standards and throughput.

Although there are lot of advantages of Li-Fi there are many challenges that we have to face and overcome.

Various industries such as manufacturing, retail, healthcare, energy and many others support unique types of endpoints in their networks for which 802.1X supplicant software is not available. In many environments, non-802.1X endpoints can far outnumber 802.1X-capable ones.

Fast communications of network within a city called WMAN, that put up an entire city or other related geographic area and can span up to 50km. WMAN is based on IEEE 802.16 that functioning on Broadband for its wireless metropolitan. WMAN have air interface and a single-carrier scheme intended to activate in the 10-66 GHz spectrum, supports incessantly unreliable transfer levels at many certified frequencies. WMAN opens the door for the creation and Provide high-speed Internet access to business subscribers. It can handle thousands of user stations with prevents collisions and support legacy voice systems, voice over IP, TCP/IP. WMAN offer different applications with different QoS requirements. The technology of WMAN consist of ATM, FDDI,

Voice over Internet Protocol is a technology that allows telephone calls to be made over computer networks like the Internet. There are several implementations of VoIP in the internet today. Many major telephone companies like AT&T have moved over to VoIP completely. It is still not clear how the performance varies with different network conditions, considering that the Internet does not provide QoS guarantees. The main objective of this paper isto evaluate the performance of G.711 VIOPcoder for different networks. Wired, Wireless Local Area Network (WLAN), Worldwide Interoperability for Microwave Access (WiMAX) and Universal Mobile Telecommunication System (UMTS) networks were implemented in OPNET Modeler The quality is compared using different QoS parameters like end-to-end delay, MOS, throughput and jitter. The VoIP codecs used in the measurements of QoS are: G.711,723.1 AND 729A. Simulations showed that G.711 is the best schemes that provide high quality of voice in Wireless Local Area Network (WLAN) communications .The results analyzed and the performance evaluated will give network operators an opportunity to select the codec for better services of VoIP for customer satisfaction.

Standar IEEE 802.11b WLAN [3] menyediakan kemampuan akses tanpa kabel ke jaringan Internet dengan kecepatan transmisi data sampai dengan 11 Mbps. Standar IEEE 802.11 memungkinkan