Performance enhancement scheme for IRS-assisted cognitive backscatter communication network
In order to achieve the self-sustainable cognitive radio network （CRN） and improve its communication efficiency， an efficient multi-mode switching scheme assisted by the intelligent reflecting surface （IRS） for the overlay scenario was proposed.In particular， the secondary transmitter （ST） could wor...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2021-12-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021233/ |
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| _version_ | 1841539186604113920 |
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| author | Bin LYU Yi CAO Jian LI Ting QI |
| author_facet | Bin LYU Yi CAO Jian LI Ting QI |
| author_sort | Bin LYU |
| collection | DOAJ |
| description | In order to achieve the self-sustainable cognitive radio network （CRN） and improve its communication efficiency， an efficient multi-mode switching scheme assisted by the intelligent reflecting surface （IRS） for the overlay scenario was proposed.In particular， the secondary transmitter （ST） could work in either backscatter communication （BackCom） mode or harvest-then-transmit （HTT） mode.The IRS was exploited to enhance the energy harvesting， information backscattering， and information transmission efficiencies at the ST.To maximize the system sum-rate， an optimization problem about the phase shirts at the IRS， time scheduling， and power allocation was formulated.Since the formulated problem was non-convex， an efficient block coordinate descent （BCD） based algorithm was proposed to achieve the sub-optimal solution.Simulation results confirm that the proposed scheme can achieve up to 200% sum-rate gain over the benchmark schemes. |
| format | Article |
| id | doaj-art-43eaaf5aebe94dc98da64cb994a74368 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2021-12-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-43eaaf5aebe94dc98da64cb994a743682025-01-14T07:23:22ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2021-12-014217218159746947Performance enhancement scheme for IRS-assisted cognitive backscatter communication networkBin LYUYi CAOJian LITing QIIn order to achieve the self-sustainable cognitive radio network （CRN） and improve its communication efficiency， an efficient multi-mode switching scheme assisted by the intelligent reflecting surface （IRS） for the overlay scenario was proposed.In particular， the secondary transmitter （ST） could work in either backscatter communication （BackCom） mode or harvest-then-transmit （HTT） mode.The IRS was exploited to enhance the energy harvesting， information backscattering， and information transmission efficiencies at the ST.To maximize the system sum-rate， an optimization problem about the phase shirts at the IRS， time scheduling， and power allocation was formulated.Since the formulated problem was non-convex， an efficient block coordinate descent （BCD） based algorithm was proposed to achieve the sub-optimal solution.Simulation results confirm that the proposed scheme can achieve up to 200% sum-rate gain over the benchmark schemes.http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021233/cognitive radiointelligent reflecting surfacebackscatter communicationharvest-then-transmitjoint opti-mization |
| spellingShingle | Bin LYU Yi CAO Jian LI Ting QI Performance enhancement scheme for IRS-assisted cognitive backscatter communication network Tongxin xuebao cognitive radio intelligent reflecting surface backscatter communication harvest-then-transmit joint opti-mization |
| title | Performance enhancement scheme for IRS-assisted cognitive backscatter communication network |
| title_full | Performance enhancement scheme for IRS-assisted cognitive backscatter communication network |
| title_fullStr | Performance enhancement scheme for IRS-assisted cognitive backscatter communication network |
| title_full_unstemmed | Performance enhancement scheme for IRS-assisted cognitive backscatter communication network |
| title_short | Performance enhancement scheme for IRS-assisted cognitive backscatter communication network |
| title_sort | performance enhancement scheme for irs assisted cognitive backscatter communication network |
| topic | cognitive radio intelligent reflecting surface backscatter communication harvest-then-transmit joint opti-mization |
| url | http://www.joconline.com.cn/zh/article/doi/10.11959/j.issn.1000-436x.2021233/ |
| work_keys_str_mv | AT binlyu performanceenhancementschemeforirsassistedcognitivebackscattercommunicationnetwork AT yicao performanceenhancementschemeforirsassistedcognitivebackscattercommunicationnetwork AT jianli performanceenhancementschemeforirsassistedcognitivebackscattercommunicationnetwork AT tingqi performanceenhancementschemeforirsassistedcognitivebackscattercommunicationnetwork |