Evaluation performance of multicarrier system using hybrid schemes to support 5G technology

Abstract

The major limitation of the multicarrier system in 5G is the peak-to-average power ratio (PAPR). PAPR is a crucial parameter for representing 5G waveform candidates, such as UFMC, FBMC, and GFDM. The higher PAPR induces the signal to be in the saturation region of high power amplifier (HPA). Hybrid PAPR diminishment technique is discussed in this paper. To attack PAPR problem, in this paper, a new adaptive level algorithm with a hybrid PAPR reduction scheme is proposed. A hybrid optimized repeated clipping and filtering combined with a companding scheme (Hybrid-ORCC) is presented. The main objective of this system is to reduce PAPR of OFDM with a minor degradation in the Bit Error Rate (BER) performance. The ORPC PAPR value has been reduced by 7.5 dB and then the Hybrid-ORCC reduce the final PAPR by 2 dB. PAPR reduction plays an important role in diminishing the system power consumption. Extensive MATLAB simulations show that the hybrid technique outperforms the conventional clipping techniques by reducing the PAPR to its optimal value.