BER and PAPR Analysis of DFT Precoded OFDM Multilayer IDMA (P-OFDM ML IDMA) Signals
In this paper, Discrete Fourier Transform Pre-coded Orthogonal Frequency Division Multiplexing Multi-Layer Interleave Division Multiple Access (DFT P OFDM ML IDMA) communication system has been proposed. Chip By Chip (CBC) iterative receiver is used to recover the data in each layer. Also, different pre-coding techniques has been applied with and without clipping in the proposed P OFDM ML IDMA. Simulation results confirm that the DFT pre-coder provides better PAPR reduction compared with other pre-coded methods with and without clipping. BER and PAPR simulation results shows that the proposed DFT P OFDM ML IDMA brings about 7 dB PAPR reduction and 0.5 dB BER improvement compared with OFDM ML IDMA.