Journal of Artificial Intelligence1994-54502077-2173Asian Network for Scientific Information10.3923/jai.2012.113.121AvilaJ.ThenmozhiK.3201253The curiosity of human on wireless devices is expanding exorbitantly, emphasizing
high data rates and band width requirements. Multiband Orthogonal Frequency
Division Multiplexing (MB-OFDM) is the technique that victuals high data rate.
Studies manifests that most of the licensed bands are not exercised in an efficient
way thereby leading to the progression of cognitive radio which allows the secondary
users to access and activate the free band of primary users. Moreover, sensing
the free holes is the prior concern in CR cycle. With the existence of diverse
spectrum sensing methods each with its own pros and cons, this study is mainly
subjected about the enhancement of energy detection method owing to its ease,
simplicity and monotony. The Fast Fourier Transform (FFT) block of the above
method is replaced with Discrete Wavelet Transform (DWT) as it can operate in
both time and frequency domains. Four wavelet families are discussed in this
study. The results are perceived from the probability of detection (p_{d})
versus Signal to Noise Ratio (SNR) graph.]]>Ghasemi, A. and E.S. Sousa,2007Avila, J., E. Vinoth and K. Thenmozhi,2012Avila, J., E. Praveen and B.V. Rajan,2012Idi, B.Y. and M.N. Kamarudin,2012Das, B., S. Tiwari and S. Das,2011Cabric, D., S.M. Mishra and R.W. Brodersen,2004Pei-Pei, C., Z. Qin-Yu, W. Ye and M. Jing,2010FCC,2002Haykin, S.,2005Akyildiz, I.F., W.Y. Lee, M.C. Vuran and S. Mohanty,2006Zhu., J., Z. Xu, F. Wang, B. Huang and B. Zhang,2008Arora, K., A. Kansal and K. Singh,2011Chavan, M.S., N. Mastorakis, M.N. Chavan and M.S. Gaikwad,2011Mitola, J.,2000Mahmoud, M.I., M.I.M. Dessouky, S. Deyab and F.H. Elfouly,2007Prithiviraj, V., B. Sarankumar, A. Kalaiyarasan, P.P. Chandru and N.N. Singh,2011Garello, R. and Y. Jia,2011Al Wadi, S., M.T. Ismail and S.A.A. Karim,2011Sahai, A., N. Hoven and R. Tandra,2004ElRamly, S., F. Newagy, H. Yousry and A. Elezabi,2011Malik., S.A., M.A. Shah, A.H. Dar, A. Haq, A. Ullah Khan, T. Javed and S.A. Khan,2010Kapoor, S., S.V.R.K. Rao and G. Singh,2011Zhan, X. and Z. Li,2010Zhao, Y., S. Li, N. Zhao and Z. Wu,2010Tang, Y.J., Q.Y. Zhang and W. Lin,2010Zheng, X., X. Huang and M. Wang,2005Jiang, Z.L., Q.Y. Zhang, Y. Wang and X.Q. Shang,2011