无线带内全双工信道的多用户最优分配问题模型

王文鼐; 黄亚男; 吴炜; 王斌

doi:10.11999/JEIT170538

无线带内全双工信道的多用户最优分配问题模型

doi: 10.11999/JEIT170538

基金项目:

国家自然科学基金(61401234)

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出版历程
- 收稿日期: 2017-06-06
- 修回日期: 2017-11-13
- 刊出日期: 2018-03-19

An Optimal Allocation Model of Wireless In-band Full-duplex Channel for Multiple Access

Funds:

The National Natural Science Foundation of China (61401234)

摘要

摘要: 无线带内全双工(IBFD)具有频谱效率倍增潜力，应用到多用户接入时，共享信道的优化分配将决定系统容量的实际增益。该文分析多用户争用冲突的干扰特性及链路分配的约束条件，以容量最大为优化目标，针对双向全双工(BFD)、全双工中继(FDR)以及两者混合的传输模式，建立信道资源分配的问题模型。通过典型站点分布的最优解计算，分析IBFD系统相对半双工(HD)的容量增益。结果表明，BFD有理想的100%增益，而FDR有较大变化范围(最低增益25%)。此外，计算发现，站点间传输链路呈现1维链型结构的容量增益明显优于2维平面分布的链路结构。
- 无线带内全双工多用户资源分配 /
- 最优化问题模型 /
- 双向全双工 /
- 全双工中继 /
- 系统容量
Abstract: The potential of wireless In-Band Full-Duplex (IBFD) in doubling spectral efficiency raises a special issue in channel allocation for Multi-user applications in capacity improvement. This paper presents an analysis on mutual interferences, contention conflicting and allocation constraints for different modes of full-duplex transmission. The maximization number of transmission links is chosen as the objective of multi-user system optimization, and a mathematic programming problem of IBFD channel allocation for three transmission modes, including Bidirectional Full-Duplex (BFD), Full-Duplex Relay (FDR) and the mixed of two is proposed. The exact optimal solutions are researched for two kinds of typical topology to find the capacity improvement of IBFD to Half-Duplex (HD). The results show that BFD multi-user system has an ideal capacity gain 100% in relative to HD, while FDR reveals a wide range of gain with 25% in the lowest. In addition, the gain of one dimensional chain of stations is found significantly superior to that of two-dimensional distribution.
- In-Band Full-Duplex (IBFD) multi-user resource allocation /
- Model of optimization problem /
- Bidirectional Full-Duplex (BFD) /
- Full-Duplex Relay (FDR) /
- System capacity

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参考文献(18)

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