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

Simmi Garg, Anuj Kumar Sharma, Anand Kumar Tyagi


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, AWGN

Cite this Article

Simmi 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.


Discrete Wavelet Transform, OFDM, Forward Error Correction, AWGN

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