Resource Optimization and Power Allocation in In-Band Full Duplex-Enabled Non-Orthogonal Multiple Access Networks

被引:59
作者
Elbamby, Mohammed S. [1 ]
Bennis, Mehdi [1 ,2 ]
Saad, Walid [3 ]
Debbah, Merouane [4 ,5 ]
Latva-aho, Matti [1 ]
机构
[1] Univ Oulu, Ctr Wireless Commun, Oulu 90014, Finland
[2] Kyung Hee Univ, Dept Comp Engn, Seoul 17104, South Korea
[3] Virginia Tech, Bradley Dept Elect & Comp Engn, Wireless VT, Blacksburg, VA 24061 USA
[4] Univ Paris Saclay, Cent Supelec, Large Networks & Syst Grp, F-91192 Gif Sur Yvette, France
[5] Huawei France, Math & Algorithm Sci Lab, F-92100 Paris, France
基金
美国国家科学基金会; 芬兰科学院;
关键词
Interference management; Lyapunov optimization; matching theory; power optimization; resource allocation; successive interference cancellation;
D O I
10.1109/JSAC.2017.2726218
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In this paper, the problem of uplink (UL) and downlink (DL) resource optimization, mode selection, and power allocation is studied for wireless cellular networks under the assumption of in-band full duplex base stations, non-orthogonal multiple access (NOMA) operation, and queue stability constraints. The problem is formulated as a network utility maximization problem for which a Lyapunov framework is used to decompose it into two disjoint subproblems of auxiliary variable selection and rate maximization. The latter is further decoupled into a user association and mode selection (UAMS) problem and a UL/DL power optimization (UDPO) problem that are solved concurrently. The UAMS problem is modeled as a many-to-one matching problem whose goal is to associate users to small cell base stations and select transmission mode (half-/full-duplex and orthogonal/NOMA). Then, an algorithm is proposed to solve the problem by finding a pairwise stable matching. Subsequently, the UDPO problem is formulated as a sequence of convex problems and is solved using the concave-convex procedure. Simulation results demonstrate that the proposed scheme is effective in allocating UL and DL power levels after dynamically selecting the operating mode and the served users, under different traffic intensity conditions, network density, and self-interference cancellation capability. The proposed scheme is shown to achieve up to 63% and 73% of gains in UL and DL packet throughput, and 21% and 17% in UL and DL cell edge throughput, respectively, compared with the existing baseline schemes.
引用
收藏
页码:2860 / 2873
页数:14
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