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| Content Provider | IET Digital Library |
|---|---|
| Author | Jing, Zewei Qin, Meng Yang, Qinghai Kwak, Kyung Sup Rao, Ramesh R. |
| Abstract | Recently, millimetre-wave (mmWave) wireless fronthauls have been regarded as an effective solution to deploy remote radio heads with higher flexibility and efficiency in cloud radio access networks (C-RANs). Different from the traditional fibre fronthauls, in order to maximise the utilisation of the time-frequency resource, the mmWave wireless fronthauls are more expected to operate in a dynamic allocation manner. In this study, the energy efficient mmWave fronthaul and OFDMA resource optimisation in C-RANs is investigated. The TDMA-based fronthaul allocation mechanism is first presented and then the joint resource optimisation is formulated as an energy efficiency (EE) maximisation problem which is in the form of a mixed-integer non-linear fractional programming (MINLFP) problem. By taking advantage of the Dinkelbach method, the MINLFP problem is transformed into a subtractive optimisation problem and solved by using the Lagrange dual decomposition theory. Moreover, a maximal weighted bipartite graph matching approach is proposed to determine the optimal resource block allocation. Finally, extensive simulation results are provided to evaluate the EE performance of the proposed algorithm by comparing with several benchmark schemes, and it shows that the proposed algorithm can achieve great EE performance gain over the benchmark schemes. |
| Starting Page | 1595 |
| Ending Page | 1601 |
| Page Count | 7 |
| ISSN | 17518628 |
| Volume Number | 12 |
| e-ISSN | 17518636 |
| Issue Number | Issue 13, Aug (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-com/12/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-com.2018.0101 |
| Journal | IET Communications |
| Publisher Date | 2018-04-24 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Algebra C-RAN Cloud Radio Access Network Combinatorial Mathematics Dinkelbach Method Energy Conservation Energy Efficiency Maximisation Problem Energy Efficient Millimetre-wave Fronthaul Resource Optimisation Energy Efficient MmWave Fronthaul Resource Optimisation Fractional Programming Problem Graph Theory Integer Programming Joint Resource Optimisation Lagrange Dual Decomposition Theory Maximal Weighted Bipartite Graph Matching Approach Millimetre Wave Communication Millimetre-wave Wireless Fronthauls MINLFP Problem Mixed-integer Nonlinear Fractional Programming MmWave Wireless Fronthauls Mobile Radio System Multiple Access Communication Nonlinear Programming Optimal Resource Block Allocation Optimisation Technique Orthogonal Frequency-division Multiplexing Resource Optimisation Radio Access Network Radio Access System Remote Radio Resource Allocation Set Theory Subtractive Optimisation Problem TDMA-based Fronthaul Allocation Mechanism TDMA-based MmWave Fronthauls Telecommunication Power Management Time Division Multiple Access Time-frequency Resource Utilisation Maximisation |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering Computer Science Applications |
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