A Novel Radon-Wavelet Based OFDM
System Design and Performance Under
Different Channel Conditions

     Abbas Kattoush
EE Engineering Department, Tafila Technical University, Jordan

Abstract: Finite Radon Transform mapper has the ability to increase orthogonality of sub-carriers, it is non sensitive to channel ‎parameters variations, and has a small constellation energy compared with conventional Fast Fourier Transform based ‎orthogonal frequency division multiplexing. It is also able to work as a good interleaver which significantly reduces the bit ‎error rate. Due to its good orthogonality, discrete wavelet transform is used for orthogonal frequency division multiplexing ‎systems which reduces inter symbol interference and inter carrier interference. This eliminates the need for cyclic prefix and ‎increases the spectral efficiency of the design. In this paper both Finite Radon Transform and Discrete Wavelet Transform are ‎implemented in a new design for orthogonal frequency division multiplexing. The new structure was tested and compared with ‎conventional Fast Fourier Transform -based orthogonal frequency division multiplexing, Radon-based orthogonal frequency ‎division multiplexing, and discrete wavelet transform -based orthogonal frequency division multiplexing for additive white ‎Gaussian noise channel, flat fading channel, and multi-path selective fading channel. Simulation tests were generated for ‎different channels parameters values. The obtained results showed that proposed system has increased spectral efficiency, ‎reduced inter symbol interference and inter carrier interference, and improved bit error rate performance compared with ‎other systems.‎

Keywords: Discrete Wavelet Transform, Finite Radon Transform, radon based OFDM, DWT based OFDM, and OFDM.‎