Publication Type : Journal Article
Publisher : Engg Journals Publications
Source : International Journal of Engineering and Technology, Engg Journals Publications, Volume 7, Issue 5, p.1651-1658 (2015)
Campus : Coimbatore
School : School of Engineering
Department : Electronics and Communication
Year : 2015
Abstract : In this work, the performance of DWT based OFDM is studied and compared it with conventional FFT based OFDM over frequency selective channels in different test environments. The Bit Error Rate (BER) estimation is done to evaluate the performance of both the systems. In DWT based OFDM, different wavelet families such as haar, daubechies, coiflet and biorthogonal were used with different levels of decomposition. The simulation results show that in all channels, DWT based OFDM requires less SNR value to achieve the minimum BER of 10-3, when compared to conventional FFT based OFDM. Therefore, DWT based OFDM can be used in place of FFT based OFDM with high bandwidth efficiency.
Cite this Research Publication : S. M. and Dr. Ramanathan R., “Performance evaluation of DWT based multicarrier systems over frequency selective channels”, International Journal of Engineering and Technology, vol. 7, no. 5, pp. 1651-1658, 2015.