%0 Journal Article %T Improving the Performance of Turbo-Coded Systems under Suzuki Fading Channels %A Ali Al-Naji %A Ali J. Al-Askery %A Mohammed Sameer Alsabah %J - %D 2019 %R https://doi.org/10.3390/jlpea9020013 %X Abstract In this paper, the performance of coded systems is considered in the presence of Suzuki fading channels, which is a combination of both short-fading and long-fading channels. The problem in manipulating a Suzuki fading model is the complicated integration involved in the evaluation of the Suzuki probability density function (PDF). In this paper, we calculated noise PDF after the zero-forcing equalizer (ZFE) at the receiver end with several approaches. In addition, we used the derived PDF to calculate the log-likelihood ratios (LLRs) for turbo-coded systems, and results were compared to Gaussian distribution-based LLRs. The results showed a 2 dB improvement in performance compared to traditional LLRs at 10 £¿ 6 of the bit error rate (BER) with no added complexity. Simulations were obtained utilizing the Matlab program, and results showed good improvement in the performance of the turbo-coded system with the proposed LLRs compared to Gaussian-based LLRs. View Full-Tex %K log-normal distribution %K Rayleigh distribution %K Suzuki distribution %U https://www.mdpi.com/2079-9268/9/2/13