科研之友
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摘要
Finite Radon Transform mapper has the ability to increase orthogonality of sub-camels it is non sensitive to channel parameters variations and has a small constellation energy compared with conventional Fact 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 m ale implemented in a new design for orthogonal frequency division multiplexing The new structure was tested and computed 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 an additive white Gaussian noise channel fiat fading channel and multi-path selective fading channel Simulation tests woe generated fin different channels parameters values The obtained results showed that proposed system has Increased spectral efficiency reduced inlet symbol interference and Inter carrier interference and improved hit error late performance compelled with other systems
- 出版日期2010-10
