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In this paper, a distributed power and spectrum allocation scheme is proposed to maximize the system energy efficiency (EE) for unlicensed device-to-device (D2D-U) networks. A non-convex optimization problem is formulated while considering the co-channel interference on licensed bands as the global constraint. To deal with the non-convex situation, the object function is converted into an equivalent convex one. Then, a distributed algorithm is developed to solve the optimization problem in which each D2D-U pair can find the optimal allocation strategy independently. The signaling overheads are analyzed and numerical results are presented to show that the proposed scheme is capable of achieving the optimal EE while confining the cochannel interference and guaranteeing the fair coexistence.
|Title of host publication||2021 IEEE 94th Vehicular Technology Conference, VTC 2021-Fall - Proceedings|
|Publisher||IEEE Institute of Electrical and Electronic Engineers|
|Publication status||Published - Sep 2021|
|MoE publication type||A4 Article in a conference publication|
|Event||IEEE 94th Vehicular Technology Conference, VTC2021-Fall - Norman, OK, USA|
Duration: 27 Sep 2021 → 30 Sep 2021
|Conference||IEEE 94th Vehicular Technology Conference, VTC2021-Fall|
|Period||27/09/21 → 30/09/21|
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- 1 Finished
1/01/19 → 31/12/21
Project: Academy of Finland project