A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems
In order to support diverse service demands of communication scenarios, 5G adopts the mixed-numerology system based on orthogonal frequency division multiplexing (OFDM).The mixed-numerology systems still have the problem of high peak-to-average power ratio (PAPR).Furthermore, its design structure ma...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2023-10-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2023194/ |
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| _version_ | 1841533668148903936 |
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| author | Nan SHI Xiaoran LIU Jun XIONG Xiaoying ZHANG Jibo WEI |
| author_facet | Nan SHI Xiaoran LIU Jun XIONG Xiaoying ZHANG Jibo WEI |
| author_sort | Nan SHI |
| collection | DOAJ |
| description | In order to support diverse service demands of communication scenarios, 5G adopts the mixed-numerology system based on orthogonal frequency division multiplexing (OFDM).The mixed-numerology systems still have the problem of high peak-to-average power ratio (PAPR).Furthermore, its design structure makes it difficult to apply traditional PAPR suppression methods straight forwardly, in which mixed signals are generated by superimposing multiple sub-signals with different parameters.An optimization model for minimizing PAPR in mixed-numerology systems was established based on tone reservation method.Utilizing the characteristic of single-peak of time-domain kernel, the multiple copies were generated in different numerologies based on the peak position of the mixed signal.The mixed time-domain kernel was then superimposed to reduce the peaks of the mixed signal.Since the proposed algorithm didn’t require inverse fast Fourier transform (IFFT)/ fast Fourier transform (FFT) operations during iteration, it had relatively low computational complexity.Simulation results show that the proposed algorithm effectively reduces the PAPR of mixed signals. |
| format | Article |
| id | doaj-art-c430919979de44839256c08026f26895 |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2023-10-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-c430919979de44839256c08026f268952025-01-15T02:58:02ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012023-10-013911459559853A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systemsNan SHIXiaoran LIUJun XIONGXiaoying ZHANGJibo WEIIn order to support diverse service demands of communication scenarios, 5G adopts the mixed-numerology system based on orthogonal frequency division multiplexing (OFDM).The mixed-numerology systems still have the problem of high peak-to-average power ratio (PAPR).Furthermore, its design structure makes it difficult to apply traditional PAPR suppression methods straight forwardly, in which mixed signals are generated by superimposing multiple sub-signals with different parameters.An optimization model for minimizing PAPR in mixed-numerology systems was established based on tone reservation method.Utilizing the characteristic of single-peak of time-domain kernel, the multiple copies were generated in different numerologies based on the peak position of the mixed signal.The mixed time-domain kernel was then superimposed to reduce the peaks of the mixed signal.Since the proposed algorithm didn’t require inverse fast Fourier transform (IFFT)/ fast Fourier transform (FFT) operations during iteration, it had relatively low computational complexity.Simulation results show that the proposed algorithm effectively reduces the PAPR of mixed signals.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2023194/mixed-numerologypeak-to-average power ratiotime-domain kerneltone reservation |
| spellingShingle | Nan SHI Xiaoran LIU Jun XIONG Xiaoying ZHANG Jibo WEI A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems Dianxin kexue mixed-numerology peak-to-average power ratio time-domain kernel tone reservation |
| title | A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems |
| title_full | A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems |
| title_fullStr | A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems |
| title_full_unstemmed | A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems |
| title_short | A peak-to-average power ratio reduction method for mixed-numerology multi-carrier systems |
| title_sort | peak to average power ratio reduction method for mixed numerology multi carrier systems |
| topic | mixed-numerology peak-to-average power ratio time-domain kernel tone reservation |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2023194/ |
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