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The cellular data traffic has been dramatically increased, a typical approach is considering the operation of the Long Term Evolution (LTE) system in the unlicensed spectrum. Although there are a large number of theoretical researches on LTE-U, field trial results are still lacking. In this paper, we build a real time field trial in 5.8GHz unlicensed bands. The typical indoor scenario is deployed...
The LTE-Advanced and its related market factors present many challenges for the RF power amplifier (PA) and front end designs. This paper reviews some of the emerging techniques such as dynamic supply voltage modulation, reconfigurable PA, FET stacking and power combining to solve these challenges for silicon based PAs. These techniques with advanced CMOS and SiGe technologies can benefit the future...
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