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Millimeter-wave (mmWave) systems require massive antennas at both transmitter and receiver to reach desirable link budget. Analog-digital hybrid beamforming is a promising architecture since it significantly reduces the hardware cost while approaches the performance of digital beamforming. However, the nonlinear power amplifier (PA) introduces intermodulation interference and degrades the spectral...
The abundant spectrum at millimeter-wave (mmWave) has the potential to greatly increase the capacity of 5G cellular systems. However, to overcome the high pathloss in the mmWave frequencies, beamforming with large antenna arrays is required at both the base station and user equipments for sufficient link budget. This feature is a challenge for beamforming training during initial access due to low...
The system performance of OFDM (orthogonal frequency division multiplexing) with dual branch SC (selection combining) diversity over small scale fading correlated channel is investigated in this paper. The performance of average BER (bit error rate) of the OFDM system is calculated by adopting the results with an alternative expression of the Q-function. The correlated-Weibull fading distribution...
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