A wireless cellular system has a total of 100 channels with all base stations placed on a highway. The base stations are equidistant with a distance of 2 km between two neighboring base stations. The base stations employ directional antennas and radiate power in one direction only. Assume that the propagation loss increases with the fourth power of the distance and the thermal noise can be neglected. a) Determine the capacity (in channels/km) that can be achieved if the SIR requirement is 20 dB. b) Determine the blocking probability as a function of the relative traffic load (erlang/cell/channel). c) Determine the channel assignment failure rate as a function of the relative load (active terminals/cell/channel).
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