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Slantlet based Polynomial Cancellation Coding OFDM | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 12, Issue 4, 2008, Pages 81-92 | ||
| Authors | ||
| a A. Ali; ; Hikmat N. Abdullah | ||
| Abstract | ||
| In this paper a new technique is proposed to improve the performance of OFDM. This technique uses the slantlet transform (SLT) instead of fast Fourier transform (FFT) to reduce the level of interference. This also will remove the need for guard interval (GI) in the case of the FFT-OFDM and therefore improves the bandwidth efficiency of the OFDM. The effect of PCC has been studied in both the traditional and proposed OFDM systems on frequency selective fading channel, flat fading channel and additive white gaussian noise (AWGN) channel.Results obtained indicate that the performance of proposed SLT based PCC-OFDM is better than FFT based PCC-OFDM in flat fading channels (bit error rate reduces from 0.4343 to 0.0046 at SNR equals 10 dB). For frequency selective fading channel the results show that the performance of the proposed SLT based PCC-OFDM is better than the FFT based PCC-OFDM at low SNR values, while the performance is approximately similar in both systems at moderate and higher SNR values | ||
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