Effect of Interleaved FEC Code on Wavelet Based MC-CDMA System with Alamouti STBC in Different Modulation Schemes

TL;DR

This study evaluates how interleaved FEC codes improve the performance of wavelet-based MC-CDMA systems with Alamouti STBC across various modulation schemes and channel conditions, demonstrating significant BER improvements.

Contribution

It introduces the application of interleaved Trellis FEC codes in wavelet MC-CDMA with Alamouti STBC, showing enhanced performance over uncoded systems in fading channels.

Findings

Interleaved FEC codes reduce BER across all modulation schemes.

Performance gain is more significant in Rayleigh fading channels.

System outperforms uncoded configurations in simulations.

Abstract

In this paper, the impact of Forward Error Correction (FEC) code namely Trellis code with interleaver on the performance of wavelet based MC-CDMA wireless communication system with the implementation of Alamouti antenna diversity scheme has been investigated in terms of Bit Error Rate (BER) as a function of Signal-to-Noise Ratio (SNR) per bit. Simulation of the system under proposed study has been done in M-ary modulation schemes (MPSK, MQAM and DPSK) over AWGN and Rayleigh fading channel incorporating Walsh Hadamard code as orthogonal spreading code to discriminate the message signal for individual user. It is observed via computer simulation that the performance of the interleaved coded based proposed system outperforms than that of the uncoded system in all modulation schemes over Rayleigh fading channel.