Anti-fading technology of near space communication based on quasi-constant envelope OFDM
For the near space high altitude platform station (HAPS), its limited power, tight spectrum resources, and the multipath fading effects due to non line of sight (NLoS) and low elevation communication environment are the main problems. An anti-fading technology of near space communication based on qu...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2019-01-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000−0801.2019003/ |
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| author | Yang LU Donglei ZHANG Tingting WANG |
| author_facet | Yang LU Donglei ZHANG Tingting WANG |
| author_sort | Yang LU |
| collection | DOAJ |
| description | For the near space high altitude platform station (HAPS), its limited power, tight spectrum resources, and the multipath fading effects due to non line of sight (NLoS) and low elevation communication environment are the main problems. An anti-fading technology of near space communication based on quasi-constant envelope OFDM (QCE-OFDM) was proposed. At the transmitting end, two OFDM signals were respectively modulated on the phases of two constant envelope signals, and then they were merged into one signal via phase shift. At the receiving end, Taylor series expansion technology was employed to divide and demodulate the signal. Analysis and simulation results show that the QCE-OFDM has the same spectral efficiency as OFDM. By selecting the modulation index reasonably, the proposed scheme can combat multipath fading effectively with less than 3 dB signal peak-to-average power ratio (PAPR), where the goal of high spectral efficiency and high energy efficiency can be achieved. |
| format | Article |
| id | doaj-art-fc79fca2b07e477a92b0a0ff40417192 |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2019-01-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-fc79fca2b07e477a92b0a0ff404171922025-01-15T03:03:31ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012019-01-013511312059591644Anti-fading technology of near space communication based on quasi-constant envelope OFDMYang LUDonglei ZHANGTingting WANGFor the near space high altitude platform station (HAPS), its limited power, tight spectrum resources, and the multipath fading effects due to non line of sight (NLoS) and low elevation communication environment are the main problems. An anti-fading technology of near space communication based on quasi-constant envelope OFDM (QCE-OFDM) was proposed. At the transmitting end, two OFDM signals were respectively modulated on the phases of two constant envelope signals, and then they were merged into one signal via phase shift. At the receiving end, Taylor series expansion technology was employed to divide and demodulate the signal. Analysis and simulation results show that the QCE-OFDM has the same spectral efficiency as OFDM. By selecting the modulation index reasonably, the proposed scheme can combat multipath fading effectively with less than 3 dB signal peak-to-average power ratio (PAPR), where the goal of high spectral efficiency and high energy efficiency can be achieved.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000−0801.2019003/near space communicationhigh altitude platform stationquasi-constant envelopeorthogonal frequency division multiplexingmultipath fadingpeak-to-average power ratio |
| spellingShingle | Yang LU Donglei ZHANG Tingting WANG Anti-fading technology of near space communication based on quasi-constant envelope OFDM Dianxin kexue near space communication high altitude platform station quasi-constant envelope orthogonal frequency division multiplexing multipath fading peak-to-average power ratio |
| title | Anti-fading technology of near space communication based on quasi-constant envelope OFDM |
| title_full | Anti-fading technology of near space communication based on quasi-constant envelope OFDM |
| title_fullStr | Anti-fading technology of near space communication based on quasi-constant envelope OFDM |
| title_full_unstemmed | Anti-fading technology of near space communication based on quasi-constant envelope OFDM |
| title_short | Anti-fading technology of near space communication based on quasi-constant envelope OFDM |
| title_sort | anti fading technology of near space communication based on quasi constant envelope ofdm |
| topic | near space communication high altitude platform station quasi-constant envelope orthogonal frequency division multiplexing multipath fading peak-to-average power ratio |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000−0801.2019003/ |
| work_keys_str_mv | AT yanglu antifadingtechnologyofnearspacecommunicationbasedonquasiconstantenvelopeofdm AT dongleizhang antifadingtechnologyofnearspacecommunicationbasedonquasiconstantenvelopeofdm AT tingtingwang antifadingtechnologyofnearspacecommunicationbasedonquasiconstantenvelopeofdm |