City wide Wi-Fi

Further information: Municipal wireless network

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Nets, Webs and the Information Infrastructure

Sunnyvale, California became the first city in the United States to offer city wide free Wi-Fi, ^[20]Corpus Christi, Texas had offered free Wi-Fi until May 31, 2007 when the network was purchased by Earthlink.^[21] Philadelphia is also trying to save the Earthlink wifi for its city.^[22] New Orleans had free city wide Wi-Fi shortly after Hurricane Katrina.^[23] City wide free Wi-Fi is available in several cities in the UK, Norwich being the first UK city host, others include Leeds, Liverpool, Newcastle Upon Tyne and London.^[24] However, Preston and Cardiff already had a paid city centre service. Other cities, such as the Minneapolis metro area, have a large number of Wi-Fi hotspots so you can receive good signals anywhere, even if from different sources. In Europe, the City of Luxembourg has a city-wide Wi-Fi network.

In Latin America, Mexico City downtown has a public Wi-Fi network. Also, many public squares in towns of Puerto Rico are offering Wi-Fi Internet access.

As compared to Wireless Mesh, WiMax provides over 4 times the number of subcarriers over a variable bandwidth of 1 to 28 MHz. With more subcarriers and a variable length guard interval, the spectral efficiency has increased from 15% to 40% compared to Wireless Mesh. The error vector magnitude of Wireless Mesh is higher than WiMax. This makes WiMax have a longer range. Wireless Mesh transmits and receives functions on the same channel where as WiMax transmits and receives functions at a different channel and at a different time. In Wireless Mesh the output power is virtually fixed however in WiMax the devices closer to the base stations emit less output power whereas the ones further away emit maximum output power.

Source:http://en.wikipedia.org/wiki/Wi-Fi

Wi-Fi can overpower WiMax if the city is meshed with hot spots. A very easy way to do it would be if mobile carriers integrate hot spots with their mobile base stations as WiMax chips are not as integrated as the Wi-Fi chips.

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