FPGA Implementation of Wavelet based SC - FDMA System

Orthogonal Frequency Division Multiple Access (OFDMA) has recently been applied widely in wireless communication systems due to its high data rate transmission capability with high bandwidth efficiency and its robustness to multi-path fading. But it has several inherent disadvantages such as the large PAPR and the sensitivity to Carrier Frequency Offset (CFO).Hence much attention has been focused on Single Carrier systems with Frequency-Domain Equalization (SC-FDE) and SCFDMA systems. Recent research has shown that the Single Carrier Frequency Division Multiple Access (SC-FDMA) is an attractive technology for uplink broadband wireless communications, because it does not have the problems such as the large Peak-to-Average Power Ratio (PAPR) that is more significant OFDMA. In this paper, an efficient transceiver scheme for the SC-FDMA systems, using the discrete wavelet transform is proposed. Wavelet analysis at the transmitter and the receiver has the ability to reduce distortion in the reconstructed signals.