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For the 5th generation (5G) mobile communication system, small cells using higher frequency bands with wider bandwidth will be introduced to achieve super high bit rate transmission of several tens of Gbps. Massive MIMO beamforming (BF) is one of promising technologies to compensate for larger path-loss in the higher frequency bands. We have proposed joint processing of analog fixed BF and channel...
This paper proposes an adaptive soft clipping method for spectrum sharing OFDMA systems. The proposed method controls in-band and out-of-band distortion power by changing the nonlinearity parameter of soft clipping. The simulation results show that the proposed method can control the distortion power by 10 dB for a practical power amplifier. The results also show that a low-peak OFDMA transmitter...
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