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Cooperative D2D communication in downlink cellular networks with energy harvesting capability

机译：下行链路蜂窝网络中的协同D2D通信，具有能量收集能力

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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）通信已被突出显示为提高LTE-Advanced Networks的频谱利用频谱的解决方案之一。在本文中，我们考虑通过用作中继以服务于蜂窝用户之一来与蜂窝网络配合的D2D发射器。我们考虑D2D发射器配备有能量收集能力的情况。我们研究了用于中继节点的中继节点的中继和用于解码蜂窝用户数据的能量之间的折衷。我们制定了优化问题，以最大化对D2D链路的最小速率要求约束的蜂窝用户速率。此外，我们考虑当接收节点配备了连续干扰消除（SIC）能力并调查使用SIC对我们所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情景相比我们合作的系统的优势。

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