PAPR Reduction in Wavelet Based SC-FDMA Using PTS scheme for LTE Uplink Transmission

Single Carrier Frequency Division Multiple Access (SCFDMA) has become a promising technique for Long Term Evolution (LTE) uplink transmission. SCFDMA is often referred as Discrete Fourier Transform (DFT) spread Orthogonal Frequency Division Multiple Access (OFDMA). The reason for using SC-FDMA for uplink transmissions is its lower Peak to Average Power Ratio (PAPR) performance. Lower PAPR makes the system power efficient, increases coverage area and allows use of small size terminal. Partial Transmit Sequence (PTS) is scheme used for reducing PAPR in different technologies. Analysis has been done using PTS scheme in OFDMA. In this paper, Wavelet based SCFDMA is proposed for analyzing Peak to Average PAPR performance using PTS scheme. Then Analysis is carried out by using different wavelets and different number of carriers. This analysis will show that the further PAPR reduction takes place in wavelet based SCFDMA using PTS scheme. Thus wavelet based SCFDMA gives better PAPR performance instead of DFT based SCFDMA.