A cooperative multicast efficient resource allocation scheme based on limited feedback
A joint subcarrier and power allocation scheme based on limited feedback for cooperative multicast network was proposed to minimize the consumed power under constrain of QoS requirement.The new scheme worked in two steps.Firstly,subcarriers were distributed to different multicast groups with equal r...
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| Format: | Article |
| Language: | zho |
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Beijing Xintong Media Co., Ltd
2017-10-01
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| Series: | Dianxin kexue |
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| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017252/ |
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| author | Lei CHEN |
| author_facet | Lei CHEN |
| author_sort | Lei CHEN |
| collection | DOAJ |
| description | A joint subcarrier and power allocation scheme based on limited feedback for cooperative multicast network was proposed to minimize the consumed power under constrain of QoS requirement.The new scheme worked in two steps.Firstly,subcarriers were distributed to different multicast groups with equal rate assumption according to limited feedback information,where fair subcarrier allocation scheme was used to achieve a tradeoff between power and fairness.Then,a cooperative power iterative scheme was adopted to allocate power effectively,where target rate on each subcarrier was computed by water-filling algorithm in the first place and then a power iterate process was implemented to optimize power allocation.Simulation and comparison results show that the new scheme significantly reduces uplink feedback overhear and the required power and the multicast service outage of cooperative scheme is much less than those of the direct scheme.Besides,cooperative power iterative scheme has lower computational complexity and therefore is suitable for practical system. |
| format | Article |
| id | doaj-art-4d3ed2fbbdf4486093df1aa63f2d9abf |
| institution | Kabale University |
| issn | 1000-0801 |
| language | zho |
| publishDate | 2017-10-01 |
| publisher | Beijing Xintong Media Co., Ltd |
| record_format | Article |
| series | Dianxin kexue |
| spelling | doaj-art-4d3ed2fbbdf4486093df1aa63f2d9abf2025-01-15T03:06:01ZzhoBeijing Xintong Media Co., LtdDianxin kexue1000-08012017-10-013310711459599650A cooperative multicast efficient resource allocation scheme based on limited feedbackLei CHENA joint subcarrier and power allocation scheme based on limited feedback for cooperative multicast network was proposed to minimize the consumed power under constrain of QoS requirement.The new scheme worked in two steps.Firstly,subcarriers were distributed to different multicast groups with equal rate assumption according to limited feedback information,where fair subcarrier allocation scheme was used to achieve a tradeoff between power and fairness.Then,a cooperative power iterative scheme was adopted to allocate power effectively,where target rate on each subcarrier was computed by water-filling algorithm in the first place and then a power iterate process was implemented to optimize power allocation.Simulation and comparison results show that the new scheme significantly reduces uplink feedback overhear and the required power and the multicast service outage of cooperative scheme is much less than those of the direct scheme.Besides,cooperative power iterative scheme has lower computational complexity and therefore is suitable for practical system.http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017252/multicastcooperative diversityresource allocationlimited feedback |
| spellingShingle | Lei CHEN A cooperative multicast efficient resource allocation scheme based on limited feedback Dianxin kexue multicast cooperative diversity resource allocation limited feedback |
| title | A cooperative multicast efficient resource allocation scheme based on limited feedback |
| title_full | A cooperative multicast efficient resource allocation scheme based on limited feedback |
| title_fullStr | A cooperative multicast efficient resource allocation scheme based on limited feedback |
| title_full_unstemmed | A cooperative multicast efficient resource allocation scheme based on limited feedback |
| title_short | A cooperative multicast efficient resource allocation scheme based on limited feedback |
| title_sort | cooperative multicast efficient resource allocation scheme based on limited feedback |
| topic | multicast cooperative diversity resource allocation limited feedback |
| url | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2017252/ |
| work_keys_str_mv | AT leichen acooperativemulticastefficientresourceallocationschemebasedonlimitedfeedback AT leichen cooperativemulticastefficientresourceallocationschemebasedonlimitedfeedback |