Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals
In order to reduce the peak-to-average power ratio（PAPR） of orthogonal frequency division multiplexing（OFDM） signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only multiplied by a scale factor but also added by a...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2011-01-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/74330676/ |
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| author | YANG Pin-lu HU Ai-qun |
| author_facet | YANG Pin-lu HU Ai-qun |
| author_sort | YANG Pin-lu |
| collection | DOAJ |
| description | In order to reduce the peak-to-average power ratio（PAPR） of orthogonal frequency division multiplexing（OFDM） signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only multiplied by a scale factor but also added by a shift.The resulting companding transform was piecewise-linear and continuous.It can provide significant PAPR reduction performance with low compu-tational complexity,and has low influence on system performances through piecewise transform.It is shown by theoreti-cal analysis and simulation that,a good trade-off between PAPR reduction and bit-error-rate performances can be achieved by carefully choosing the two scales and the shift.Furthermore,compared with existing linear and nonlinear companding transforms,a better power spectral density performance can be achieved. |
| format | Article |
| id | doaj-art-018d4e48cf6e445297b40f110bfbdb35 |
| institution | OA Journals |
| issn | 1000-436X |
| language | zho |
| publishDate | 2011-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-018d4e48cf6e445297b40f110bfbdb352025-08-20T02:34:06ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2011-01-01321774330676Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signalsYANG Pin-luHU Ai-qunIn order to reduce the peak-to-average power ratio（PAPR） of orthogonal frequency division multiplexing（OFDM） signals,a piecewise-linear companding transform was proposed.Small amplitudes were multiplied by a scale factor,while large ones were not only multiplied by a scale factor but also added by a shift.The resulting companding transform was piecewise-linear and continuous.It can provide significant PAPR reduction performance with low compu-tational complexity,and has low influence on system performances through piecewise transform.It is shown by theoreti-cal analysis and simulation that,a good trade-off between PAPR reduction and bit-error-rate performances can be achieved by carefully choosing the two scales and the shift.Furthermore,compared with existing linear and nonlinear companding transforms,a better power spectral density performance can be achieved.http://www.joconline.com.cn/zh/article/74330676/orthogonal frequency division multiplexingpeak-to-average power ratiocompanding transform |
| spellingShingle | YANG Pin-lu HU Ai-qun Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals Tongxin xuebao orthogonal frequency division multiplexing peak-to-average power ratio companding transform |
| title | Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals |
| title_full | Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals |
| title_fullStr | Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals |
| title_full_unstemmed | Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals |
| title_short | Piecewise-linear companding transform for peak-to-average power ratio reduction of OFDM signals |
| title_sort | piecewise linear companding transform for peak to average power ratio reduction of ofdm signals |
| topic | orthogonal frequency division multiplexing peak-to-average power ratio companding transform |
| url | http://www.joconline.com.cn/zh/article/74330676/ |
| work_keys_str_mv | AT yangpinlu piecewiselinearcompandingtransformforpeaktoaveragepowerratioreductionofofdmsignals AT huaiqun piecewiselinearcompandingtransformforpeaktoaveragepowerratioreductionofofdmsignals |