An analytical comparison between applying FFT and DWT in WiMAX systems
Discrete Wavelet Transform DWT has advantages over Fast Fourier Transform FFT in analyzing signals containing sharp spikes. DWT processes data at different scales. If we look at the signal with a large window, we would notice big features. Similarly, if we look at the signal with a small window, we would notice small features. The DWT features encourage us to compare them with those of the FFT. In this paper, we analytically compare between the error performance of FFT and DWT in terms of the Bit Error Probability BEP. Then WiMAX system parameters are used to ensure the suitability of application on WiMAX system.
Keywords: Discrete Wavelet Transform (DWT), Fast Fourier Transform (FFT), Probability of Error p(e), Quadrature Mirror Filter (QMF), Worldwide interoperability for Microwave Access (WiMAX).
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ABOUT THE AUTHORS
Heba Raouf
1Instructor at Arab Academy for Science Technology and Maritime Transport, Port Said, Egypt
Heba Yosef
2 Communications and Electronics Department, Port Said University, Egypt
Atef Ghonem
3Communication and Electronics Department, Suez Canal University, Egypt
Heba Raouf
1Instructor at Arab Academy for Science Technology and Maritime Transport, Port Said, Egypt
Heba Yosef
2 Communications and Electronics Department, Port Said University, Egypt
Atef Ghonem
3Communication and Electronics Department, Suez Canal University, Egypt
