Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System
In orthogonal frequency division multiplexing (OFDM) system, the existence of frequency offset in AWGN channel affects the orthogonality among the subcarriers and consequently introduces the intercarrier interference (ICI). The paper investigates new ICI self-cancellation technique to mitigate the e...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Journal of Function Spaces |
| Online Access: | http://dx.doi.org/10.1155/2015/854753 |
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| author | Shilpi Gupta Upena Dalal Vishnu Narayan Mishra |
| author_facet | Shilpi Gupta Upena Dalal Vishnu Narayan Mishra |
| author_sort | Shilpi Gupta |
| collection | DOAJ |
| description | In orthogonal frequency division multiplexing (OFDM) system, the existence of frequency offset in AWGN channel affects the orthogonality among the subcarriers and consequently introduces the intercarrier interference (ICI). The paper investigates new ICI self-cancellation technique to mitigate the effect of ICI in FFT-OFDM and compares it to DCT based OFDM system in terms of bit error rate (BER) and carrier to interference ratio (CIR).
The proposed method for group size three results in a significant 20 dB improved CIR in FFT-OFDM. In terms of BER, proposed ICI self-cancellation technique outperforms the other self-cancellation techniques in FFT-OFDM. Also, this paper investigates outperforming BER and CIR improvement by using DCT-OFDM without applying self-cancellation techniques, due to its energy compaction property. |
| format | Article |
| id | doaj-art-d30c8ce331c046068087c887fc0a30dc |
| institution | Kabale University |
| issn | 2314-8896 2314-8888 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Function Spaces |
| spelling | doaj-art-d30c8ce331c046068087c887fc0a30dc2025-02-03T01:21:19ZengWileyJournal of Function Spaces2314-88962314-88882015-01-01201510.1155/2015/854753854753Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM SystemShilpi Gupta0Upena Dalal1Vishnu Narayan Mishra2Electronics Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, IndiaElectronics Engineering Department, Sardar Vallabhbhai National Institute of Technology, Surat 395 007, IndiaApplied Mathematics and Humanities Department, Sardar Vallabhbhai National Institute of Technology, Ichchhanath Mahadev Dumas Road, Surat, Gujarat 395 007, IndiaIn orthogonal frequency division multiplexing (OFDM) system, the existence of frequency offset in AWGN channel affects the orthogonality among the subcarriers and consequently introduces the intercarrier interference (ICI). The paper investigates new ICI self-cancellation technique to mitigate the effect of ICI in FFT-OFDM and compares it to DCT based OFDM system in terms of bit error rate (BER) and carrier to interference ratio (CIR). The proposed method for group size three results in a significant 20 dB improved CIR in FFT-OFDM. In terms of BER, proposed ICI self-cancellation technique outperforms the other self-cancellation techniques in FFT-OFDM. Also, this paper investigates outperforming BER and CIR improvement by using DCT-OFDM without applying self-cancellation techniques, due to its energy compaction property.http://dx.doi.org/10.1155/2015/854753 |
| spellingShingle | Shilpi Gupta Upena Dalal Vishnu Narayan Mishra Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System Journal of Function Spaces |
| title | Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System |
| title_full | Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System |
| title_fullStr | Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System |
| title_full_unstemmed | Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System |
| title_short | Performance on ICI Self-Cancellation in FFT-OFDM and DCT-OFDM System |
| title_sort | performance on ici self cancellation in fft ofdm and dct ofdm system |
| url | http://dx.doi.org/10.1155/2015/854753 |
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