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The exponentially growing demand for wireless traffic is straining cellular networks. According to Cisco's report, in 2011 global mobile data traffic doubled for the fourth year in a row and was eight times the traffic of the entire global Internet in 2000. Cisco further expects that global mobile data traffic will increase 18-fold between 2011 and 2016. Obviously, mobile network operators are facing intense pressure to make their networks keep pace with this exponential wireless traffic growth. The explosive data growth is resulting in a spectrum crunch and thus many operators are looking to refarm their 2G spectrum to deploy more spectrally efficient Long Term Evolution (LTE) technology.
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