A mobile company wants to cover a city with an area of 162 sq km with cells of 3 sq km area each. The company is given the frequency band between (580 - 854] MHz. The band is divided into parts, reverse and forward. The two parts are separated by 1.48 MHz of gap. One simplex channel requires 14 kHz. Minimum SIR required to be 6.2 dB and the path loss exponent equals 2. On average, each user makes 6 phone calls per hour and each call lasts for 48 seconds. The required GOS is 1%. The number of available channels in each cell would be

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Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.