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arXiv 2011.12757cs.ITcs.AImath.IT
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基于深度学习的设备到设备通信资源分配

Deep Learning-based Resource Allocation For Device-to-Device Communication

Gyeongsang National University(庆尚国立大学);Friedrich-Alexander-University Erlangen-Nürnberg(弗里德里希-亚历山大-埃尔兰根-纽伦堡大学)

Woongsup Lee, Robert Schober

摘要:

本文提出了一种用于在具有设备到设备(D2D)通信的多信道蜂窝系统中优化资源分配的深度学习(DL)框架。因此,D2D用户的信道分配和离散发射功率电平(两者都是整数变量)被优化以最大化总体频谱效率,同时维持蜂窝用户的服务质量(QoS)。根据信道状态信息(CSI)的可用性,考虑两种不同的配置,即1)具有完整CSI的集中式操作和2)具有部分CSI的分布式操作,其中在后一种情况下,根据反馈信道的容量对CSI进行编码。代替解决每个信道实现的所产生的资源分配问题,提出了DL框架,其中用于任意信道条件的最优资源分配策略由深度神经网络(DNN)模型近似。此外,我们提出了一种新的训练策略,结合监督和无监督学习方法和本地CSI共享策略,以实现接近最优的性能,同时执行蜂窝用户的QoS约束,并有效地处理整数优化变量的基础上,一些地面真理标签。我们的仿真结果证实,接近最佳的性能,可以达到较低的计算时间,这强调了所提出的方案的实时能力。此外,我们的研究结果表明,不仅资源分配策略,而且CSI编码策略可以有效地确定使用DNN。此外,我们表明,建议的DL框架可以很容易地扩展到具有不同设计目标的通信系统。

英文摘要:

In this paper, a deep learning (DL) framework for the optimization of the resource allocation in multi-channel cellular systems with device-to-device (D2D) communication is proposed. Thereby, the channel assignment and discrete transmit power levels of the D2D users, which are both integer variables, are optimized to maximize the overall spectral efficiency whilst maintaining the quality-of-service (QoS) of the cellular users. Depending on the availability of channel state information (CSI), two different configurations are considered, namely 1) centralized operation with full CSI and 2) distributed operation with partial CSI, where in the latter case, the CSI is encoded according to the capacity of the feedback channel. Instead of solving the resulting resource allocation problem for each channel realization, a DL framework is proposed, where the optimal resource allocation strategy for arbitrary channel conditions is approximated by deep neural network (DNN) models. Furthermore, we propose a new training strategy that combines supervised and unsupervised learning methods and a local CSI sharing strategy to achieve near-optimal performance while enforcing the QoS constraints of the cellular users and efficiently handling the integer optimization variables based on a few ground-truth labels. Our simulation results confirm that near-optimal performance can be attained with low computation time, which underlines the real-time capability of the proposed scheme. Moreover, our results show that not only the resource allocation strategy but also the CSI encoding strategy can be efficiently determined using a DNN. Furthermore, we show that the proposed DL framework can be easily extended to communications systems with different design objectives.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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