Nonlinear companding transform for PAPR reduction in lattice-OFDM system
Since the inherent higher peak-to-average power ratio (PAPR) in lattice OFDM (LOFDM) is higher than that of conventional OFDM systems, a novel continuous and differentiable nonlinear companding scheme is investigated and analyzed when employing the conventional companding transforms. By making full...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2015-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015079/ |
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| _version_ | 1841539637400567808 |
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| author | Si-ming PENG Yue-hong SHEN Zhi-gang YUAN Yu-wei MIAO Wei JIAN |
| author_facet | Si-ming PENG Yue-hong SHEN Zhi-gang YUAN Yu-wei MIAO Wei JIAN |
| author_sort | Si-ming PENG |
| collection | DOAJ |
| description | Since the inherent higher peak-to-average power ratio (PAPR) in lattice OFDM (LOFDM) is higher than that of conventional OFDM systems, a novel continuous and differentiable nonlinear companding scheme is investigated and analyzed when employing the conventional companding transforms. By making full use of the characteristic of the Gaus-sian-distributed original signals and employing a truncation to the distribution function of the original signals, the com-panded signals can be restricted in a specific region which consistents with the distribution of original signals. Therefore, the companded signals can not only achieve an improved PAPR and bit error ratio (BER) performance but also maintain the statistical characteristics of the original signals. Theoretical analysis and simulation results demonstrate that the pro-posed scheme substantially outperforms the conventional nonlinear companding schemes. |
| format | Article |
| id | doaj-art-23da384f35744be49180d5b43cad9e44 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2015-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-23da384f35744be49180d5b43cad9e442025-01-14T06:45:49ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-03-013623223959691223Nonlinear companding transform for PAPR reduction in lattice-OFDM systemSi-ming PENGYue-hong SHENZhi-gang YUANYu-wei MIAOWei JIANSince the inherent higher peak-to-average power ratio (PAPR) in lattice OFDM (LOFDM) is higher than that of conventional OFDM systems, a novel continuous and differentiable nonlinear companding scheme is investigated and analyzed when employing the conventional companding transforms. By making full use of the characteristic of the Gaus-sian-distributed original signals and employing a truncation to the distribution function of the original signals, the com-panded signals can be restricted in a specific region which consistents with the distribution of original signals. Therefore, the companded signals can not only achieve an improved PAPR and bit error ratio (BER) performance but also maintain the statistical characteristics of the original signals. Theoretical analysis and simulation results demonstrate that the pro-posed scheme substantially outperforms the conventional nonlinear companding schemes.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015079/lattice OFDMpeak-to-average power rationonlinear companding transformprobability distribution func-tion |
| spellingShingle | Si-ming PENG Yue-hong SHEN Zhi-gang YUAN Yu-wei MIAO Wei JIAN Nonlinear companding transform for PAPR reduction in lattice-OFDM system Tongxin xuebao lattice OFDM peak-to-average power ratio nonlinear companding transform probability distribution func-tion |
| title | Nonlinear companding transform for PAPR reduction in lattice-OFDM system |
| title_full | Nonlinear companding transform for PAPR reduction in lattice-OFDM system |
| title_fullStr | Nonlinear companding transform for PAPR reduction in lattice-OFDM system |
| title_full_unstemmed | Nonlinear companding transform for PAPR reduction in lattice-OFDM system |
| title_short | Nonlinear companding transform for PAPR reduction in lattice-OFDM system |
| title_sort | nonlinear companding transform for papr reduction in lattice ofdm system |
| topic | lattice OFDM peak-to-average power ratio nonlinear companding transform probability distribution func-tion |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015079/ |
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