Resource allocation algorithm based on the multi-relay decoding-and-forwarding in OFDM system
For the rate maximization problem in OFDM decode-and-forward relay system，a resource allocation algorithm based on the multi-relay forwarding was proposed. In the algorithm，the same subcarrier could be forwarded by multiple relays，and the base station could use the subcarriers that are not occupied...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Beijing Xintong Media Co., Ltd
2016-04-01
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| Series: | Dianxin kexue |
| Subjects: | |
| Online Access: | http://www.telecomsci.com/zh/article/doi/10.11959/j.issn.1000-0801.2016081/ |
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| Summary: | For the rate maximization problem in OFDM decode-and-forward relay system，a resource allocation algorithm based on the multi-relay forwarding was proposed. In the algorithm，the same subcarrier could be forwarded by multiple relays，and the base station could use the subcarriers that are not occupied by relays to transmit new symbols in the second phase. To reduce the computational complexity，the information transmission mode and the optimal relay set that assisting the transmission under relay mode were determined first，then the original problem was transformed into a dual problem to achieve the joint optimization solution of subcarrier-pairing and power allocation. Simulation results show that the proposed algorithm can achieve a higher system capacity. |
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| ISSN: | 1000-0801 |