PAPR Reduction of OFDM Signals Using Clipping and Coding
The problem of the high peak to average ratio (PAPR) in OFDM signals is investigated with a brief presentation of the various methods used to reduce the PAPR with special attention to the clipping method. An alternative approach of clipping is presented, where the clipping is performed right after...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2023-07-01
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| Series: | Journal of Engineering |
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| Online Access: | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2542 |
| _version_ | 1797782995633963008 |
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| author | Mohammed Kasim Al-Haddad |
| author_facet | Mohammed Kasim Al-Haddad |
| author_sort | Mohammed Kasim Al-Haddad |
| collection | DOAJ |
| description |
The problem of the high peak to average ratio (PAPR) in OFDM signals is investigated with a brief presentation of the various methods used to reduce the PAPR with special attention to the clipping method. An alternative approach of clipping is presented, where the clipping is performed right after the IFFT stage unlike the conventional clipping that is performed in the power amplifier stage, which causes undesirable out of signal band spectral growth. In the proposed method, there is clipping of samples not clipping of wave, therefore, the spectral distortion is avoided. Coding is required to correct the errors introduced by the clipping and the overall system is tested for two types of modulations, the QPSK as a constant amplitude modulation and 16QAM as a varying amplitude modulation.
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| first_indexed | 2024-03-13T00:19:50Z |
| format | Article |
| id | doaj.art-e3b10282f8d14a32a484e7ca4356fa91 |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-03-13T00:19:50Z |
| publishDate | 2023-07-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-e3b10282f8d14a32a484e7ca4356fa912023-07-11T18:34:11ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392023-07-01200810.31026/j.eng.2014.08.02PAPR Reduction of OFDM Signals Using Clipping and CodingMohammed Kasim Al-Haddad The problem of the high peak to average ratio (PAPR) in OFDM signals is investigated with a brief presentation of the various methods used to reduce the PAPR with special attention to the clipping method. An alternative approach of clipping is presented, where the clipping is performed right after the IFFT stage unlike the conventional clipping that is performed in the power amplifier stage, which causes undesirable out of signal band spectral growth. In the proposed method, there is clipping of samples not clipping of wave, therefore, the spectral distortion is avoided. Coding is required to correct the errors introduced by the clipping and the overall system is tested for two types of modulations, the QPSK as a constant amplitude modulation and 16QAM as a varying amplitude modulation. https://joe.uobaghdad.edu.iq/index.php/main/article/view/2542OFDM (orthogonal frequency division multiplexing), PAPR (peak to average power ratio), clipping, QPSK (quadrature phase shift keying) modulation, QAM (quadrature amplitude), channel coding. |
| spellingShingle | Mohammed Kasim Al-Haddad PAPR Reduction of OFDM Signals Using Clipping and Coding Journal of Engineering OFDM (orthogonal frequency division multiplexing), PAPR (peak to average power ratio), clipping, QPSK (quadrature phase shift keying) modulation, QAM (quadrature amplitude), channel coding. |
| title | PAPR Reduction of OFDM Signals Using Clipping and Coding |
| title_full | PAPR Reduction of OFDM Signals Using Clipping and Coding |
| title_fullStr | PAPR Reduction of OFDM Signals Using Clipping and Coding |
| title_full_unstemmed | PAPR Reduction of OFDM Signals Using Clipping and Coding |
| title_short | PAPR Reduction of OFDM Signals Using Clipping and Coding |
| title_sort | papr reduction of ofdm signals using clipping and coding |
| topic | OFDM (orthogonal frequency division multiplexing), PAPR (peak to average power ratio), clipping, QPSK (quadrature phase shift keying) modulation, QAM (quadrature amplitude), channel coding. |
| url | https://joe.uobaghdad.edu.iq/index.php/main/article/view/2542 |
| work_keys_str_mv | AT mohammedkasimalhaddad paprreductionofofdmsignalsusingclippingandcoding |