Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals
Considering the drawbacks of the traditional companding transforms，an efficient companding scheme combined with iterative filtering was proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals.By introducing a joint optimization approach...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2015-04-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015091/ |
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| author | Chao YANG Yong WANG Jian-hua GE |
| author_facet | Chao YANG Yong WANG Jian-hua GE |
| author_sort | Chao YANG |
| collection | DOAJ |
| description | Considering the drawbacks of the traditional companding transforms，an efficient companding scheme combined with iterative filtering was proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals.By introducing a joint optimization approach for PAPR and bit error rate (BER) performances along with remaining an unchanged average output power level，the scheme could achieve significant reduction in PAPR as well as an improved BER simultaneously.Moreover，by adaptively adjusting the transform parameters in the iterative process，more design flexibility in companding form and lower out-of-band radiation could also be given to satisfy various system requirements.The proposed scheme had a simple functional form and less computational complexity.The theoretical results regarding the transform gain and impact of companding distortion were derived.Simulation results show that this scheme can substantially offer better overall performances in terms of PAPR reduction，BER performance and bandwidth efficiency. |
| format | Article |
| id | doaj-art-2c699bdbbe3249f4afdc9f1a1bd5c55a |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2015-04-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-2c699bdbbe3249f4afdc9f1a1bd5c55a2025-01-14T06:46:14ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2015-04-013616416959692617Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signalsChao YANGYong WANGJian-hua GEConsidering the drawbacks of the traditional companding transforms，an efficient companding scheme combined with iterative filtering was proposed to reduce the peak-to-average power ratio (PAPR) of orthogonal frequency division multiplexing (OFDM) signals.By introducing a joint optimization approach for PAPR and bit error rate (BER) performances along with remaining an unchanged average output power level，the scheme could achieve significant reduction in PAPR as well as an improved BER simultaneously.Moreover，by adaptively adjusting the transform parameters in the iterative process，more design flexibility in companding form and lower out-of-band radiation could also be given to satisfy various system requirements.The proposed scheme had a simple functional form and less computational complexity.The theoretical results regarding the transform gain and impact of companding distortion were derived.Simulation results show that this scheme can substantially offer better overall performances in terms of PAPR reduction，BER performance and bandwidth efficiency.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015091/OFDMPAPRcompanding transformparameter optimization |
| spellingShingle | Chao YANG Yong WANG Jian-hua GE Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals Tongxin xuebao OFDM PAPR companding transform parameter optimization |
| title | Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals |
| title_full | Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals |
| title_fullStr | Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals |
| title_full_unstemmed | Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals |
| title_short | Companding transform technique combined with iterative filtering for reducing PAPR of OFDM signals |
| title_sort | companding transform technique combined with iterative filtering for reducing papr of ofdm signals |
| topic | OFDM PAPR companding transform parameter optimization |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2015091/ |
| work_keys_str_mv | AT chaoyang compandingtransformtechniquecombinedwithiterativefilteringforreducingpaprofofdmsignals AT yongwang compandingtransformtechniquecombinedwithiterativefilteringforreducingpaprofofdmsignals AT jianhuage compandingtransformtechniquecombinedwithiterativefilteringforreducingpaprofofdmsignals |