The Effect of NCT Techniques on SC-FDMA System in presence of HPA
Journal Title: International Journal of Research in Computer and Communication Technology - Year 2014, Vol 3, Issue 8
Abstract
In this paper, a companding technique is used to reduce the Peak-to-Average Power Ratio (PAPR) in Single-Carrier Frequency Division Multiple Access (SC-FDMA) systems. By Nonlinear Companding Transform (NCT) technique can be campand the samples with large amplitudes, while enhance those with small amplitudes; a significant reduction in the PAPR can be achieved. The performance of the proposed SC-FDMA with NCT system with effect of High Power Amplifier (HPA) is studied and compared with that of the standard SC-FDMA system. Simulation results show that the SC-FDMA with NCT system has a lower PAPR when compared with the conventional SC-FDMA system, while the complexity of the system slightly increases. The simulation results show that the companding coefficient must be chosen carefully in order to limit the PAPR without introducing degradation in the Bit Error Rate (BER) performance.
Authors and Affiliations
Y Suravardhana Reddy, M Vinod Kumar Reddy, K Ayyanna, G V Ravikumar
Keywords
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