影响因子：4.875

DOI码：10.1109/TSP.2021.3052830

发表刊物：IEEE Transactions on Signal Processing

摘要：Wireless network virtualization is a promising solution to improve spectrum efficiency. For a wireless downlink communication system with multiple mobile virtual network operators (MVNOs), we propose a decentralized blockchain-based dynamic spectrum acquisition scheme. Our proposed scheme aims to minimize the sum transmit power at all MVNOs while satisfying the average data transmission rate thresholds. For each MVNO, the required wireless spectrum to provide customized services to the mobile users (MUs) is predicted using the half-range Gauss-Hermite quadrature. Based on the predicted values, all the MVNOs carry out a blockchain-based distributed alternative direction method of multipliers to obtain the global optimal solution to the aforementioned sum transmit power minimization problem. To examine the effectiveness of our proposed scheme, with known system parameters, we also theoretically derive the semi-closed-form solution to the actually required sum transmit power minimization problem subject to data transmission rate constraints. Simulation results illustrate that our proposed dynamic spectrum acquisition scheme achieves almost the same minimum sum power as the non-causal scheme, which assumes the number of active MUs in all cells and all the channels are known non-causally for the optimal dynamic spectrum allocation.

合写作者：李亦卿,张广驰,秦家银

第一作者：姜淼

通讯作者：张旗

学科门类：工学

一级学科：信息与通信工程

文献类型：J

卷号：69

页面范围：986–997

ISSN号：1941-0476

是否译文：否

发表时间：2021-01-22

收录刊物：SCI

发布期刊链接：https://ieeexplore.ieee.org/document/9334436