BER Analysis of Wavelet Based OFDM Using Different Modulation Techniques

G. Sailakshmi, K. Sudha

Abstract: In this paper, we propose a new scheme for data transmission in Long Term Evolution (LTE) methods based on Orthogonal Frequency Division Multiplexing (OFDM). In OFDM scheme we compare Discrete Fourier Transform (DFT) based OFDM with wavelet based technique. In this method, DWT-COIFLET (Discrete wavelet transform) is used for wavelet decomposition, we compare COIFLET wavelet with traditional wavelet decomposition techniques like Daubechies2 and haar and also we prove that DWT-COIFLET wavelet will yield better performance. The use of maximum Ratio combining equalizer for LTE based MIMO scheme decreases MSE ultimately BER will be reduced. We compare our wavelet based LTE scheme with state-of-art criteria like DFT based LTE scheme, traditional wavelet based LTE (haar and Daubechies2) and we prove that our methodology will yield better results compare to previous methodology based on Bit error rate calculation in 64-QAM modulation scheme.

Keywords: LTE, OFDM, DFT, Wavelet, BER

How to Cite?: G. Sailakshmi, K. Sudha, "BER Analysis of Wavelet Based OFDM Using Different Modulation Techniques", Volume 4 Issue 5, May 2015, International Journal of Science and Research (IJSR), Pages: 2519-2523, https://www.ijsr.net/getabstract.php?paperid=SUB154831, DOI: https://dx.doi.org/10.21275/SUB154831