International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 184 - Number 28 |
Year of Publication: 2022 |
Authors: Anam Mobin, Anwar Ahmad |
10.5120/ijca2022922353 |
Anam Mobin, Anwar Ahmad . Performance Analysis of FS-FBMC/OQAM Systems using Companding and Channel Coding Techniques in Rayleigh Fading Channels. International Journal of Computer Applications. 184, 28 ( Sep 2022), 26-34. DOI=10.5120/ijca2022922353
Filter Bank Multicarrier (FBMC) with offset QAM (OQAM) is a potential waveform contender for 5G and future wireless systems. It can be implemented using either polyphase network (PPN)-FFT or Frequency Spread (FS)-FBMC implementation. It suffers from high peak-to-average-power ratio (PAPR) problem because of its multicarrier nature. In this paper some non-linear companding PAPR reduction techniques such as μ-law, A-law, rooting, tangent rooting, and logarithmic rooting were investigated in terms of their bit-error-rate (BER) performance for FS-FBMC/OQAM systems in Rayleigh flat fading channels. Also, some channel coding techniques such as turbo codes and low-density parity check (LDPC) codes were also investigated in terms of their effect on PAPR value and BER reduction performance for FS-FBMC/OQAM systems in Rayleigh flat fading channels. It was observed that the rooting companding provided better BER performance in comparison to other companding schemes. It was observed that LDPC coded FS-FBMC/OQAM system provided slightly better BER performance in comparison to turbo coded FS-FBMC/OQAM system. It was also observed that LDPC coded FS-FBMC/OQAM system provided lower PAPR in comparison to turbo coded FS-FBMC/OQAM system and is suitable for applications requiring lower computational complexity and delay. It was also observed that the FS-FBMC/OQAM system outperforms the Orthogonal Frequency Division Multiplexing (OFDM)system in terms of BER performance in Rayleigh flat fading channel.