| Autor: |
Fanzi Zeng, Qiao Li, Zhu Xiao, Vincent Havyarimana, Jing Bai |
| Jazyk: |
angličtina |
| Rok vydání: |
2018 |
| Předmět: |
|
| Zdroj: |
IEEE Access, Vol 6, Pp 42004-42013 (2018) |
| Druh dokumentu: |
article |
| ISSN: |
2169-3536 |
| DOI: |
10.1109/ACCESS.2018.2856627 |
| Popis: |
In this paper, we investigate the problem of resource allocation and cross-tier interference mitigation in full-duplex orthogonal frequency division multiple access -based heterogeneous networks consisting of macrocell and underlaying femtocells. First, we design a price mechanism to maximize the utility of both macro base station and femtocell base stations under finite interference constraint. We then propose a triple optimization strategy for power control, subcarrier allocation, and price regulation to mitigate the cross-tier interference. For the macrocell, the barrier method is proposed to implement the price-based resource allocation and ensure the utility maximization. For the femtocells, we propose a Lagrangian optimization algorithm based on KKT conditions to solve the power control and subcarrier allocation, in which a closed-form solution is derived to tackle the dual multiplier problem. Simulation results demonstrate that the resource allocation algorithm can effectively neutralize the cross-tier interference and maximize the utility of the heterogeneous macrocell-femtocell networks. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
