| 한글제목(Korean Title) |
Energy Efficiency Optimization for multiuser OFDM-based Cognitive Heterogeneous networks |
| 영문제목(English Title) |
Energy Efficiency Optimization for multiuser OFDM-based Cognitive Heterogeneous networks |
| 저자(Author) |
Bing Ning
Aihua Zhang
Wanming Hao
Jianjun Li
Shouyi Yang
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| 원문수록처(Citation) |
VOL 13 NO. 06 PP. 2873 ~ 2892 (2019. 06) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
Reducing the interference to the licensed mobile users and obtaining the energy efficiency are key issues in cognitive heterogeneous networks. A corresponding rate loss constraint is proposed to be used for the sensing-based spectrum sharing (SBSS) model in cognitive heterogeneous networks in this paper. Resource allocation optimization strategy is designed for the maximum energy efficiency under the proposed interference constraint together with average transmission power constraint. An efficiency algorithm is studied to maximize energy efficiency due to the nonconvex optimal problem. Furthermore, the relationship between the proposed protection criterion and the conventional interference constraint strategy under imperfect sensing condition for the SBSS model is also investigated, and we found that the conventional interference threshold can be regarded as the upper bound of the maximum rate loss that the primary user could tolerate. Simulation results have shown the effectiveness of the proposed protection criterion overcome the conventional interference power constraint.
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| 키워드(Keyword) |
Cognitive Heterogeneous Network
OFDM
spectrum sensing
resource allocation
energy efficiency
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| 파일첨부 |
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