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Cooperative D2D communication in downlink cellular networks with energy harvesting capability

机译：具有能量收集功能的下行链路蜂窝网络中的协作D2D通信

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Device-to-Device (D2D) communications have been highlighted as one of the promising solutions to enhance spectrum utilization of LTE-Advanced networks. In this paper, we consider a D2D transmitter cooperating with a cellular network by acting as a relay to serve one of the cellular users. We consider the case in which the D2D transmitter is equipped with an energy harvesting capability. We investigate the trade-off between the amount of energy used for relaying and the energy used for decoding the cellular user data at the relaying node. We formulate an optimization problem to maximize the cellular user rate subject to a minimum rate requirement constraint for the D2D link. Moreover, we consider the case when receiving nodes are equipped with successive interference cancellation (SIC) capability and investigate the effect of using SIC on our proposed system performance. Finally, we show via numerical simulations the benefits of our cooperation-based system as compared to the non-cooperative scenario.
机译：设备到设备（D2D）通信已被强调为增强LTE高级网络频谱利用率的有前途的解决方案之一。在本文中，我们考虑通过充当中继来为其中一个蜂窝用户提供服务的方式与蜂窝网络协作的D2D发射机。我们考虑D2D发射机配备能量收集功能的情况。我们研究了用于中继的能量与用于在中继节点处解码蜂窝用户数据的能量之间的权衡。我们制定了一个优化问题，以在D2D链路的最小速率要求约束下最大化蜂窝用户速率。此外，我们考虑了接收节点具备连续干扰消除（SIC）能力的情况，并研究了使用SIC对我们提出的系统性能的影响。最后，我们通过数值模拟显示了与非合作方案相比，基于合作的系统的优势。

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