Bit Error Rate Reduction in DWT-OFDM Systems using a Novel Error Correction Scheme

Simmi Garg; Anuj Kumar Sharma; Anand Kumar Tyagi

Abstract

Proposed Error Correction scheme has been implemented on Discrete Wavelet Transform based Orthogonal Frequency Division Multiplexing (DWT-OFDM) system using simulations by MATLAB. The Bit Error Rate (BER) performance of the proposed system has been studied in terms of signal to noise ratio (Eb/No). The proposed system has been examined under Additive White Gaussian Noise Channel (AWGN), and it has been compared with the ½ rate convolution encoded DWT-OFDM. Further, the performance of the proposed system has also been examined using different modulation schemes. Moreover, a number of wavelet families have been used for evaluating the proposed system. The simulation results show that performance of proposed system is better than ½ rate convolution encoded DWT-OFDM under all the simulating conditions. Hence, proposed system leads to decrease in the bit error rate and thus, it is an efficient and reliable system for wireless communication systems.Keywords: Discrete wavelet transform, OFDM, forward error correction, AWGNCite this ArticleSimmi Garg, Anuj Kumar Sharma, Anand Kumar Tyagi. Bit Error Rate Reduction in DWT-OFDM Systems using a Novel Error Correction Scheme. Research & Reviews: Journal of Physics. 2019; 8(2): 1–12p.