计算机科学 ›› 2019, Vol. 46 ›› Issue (7): 61-66.doi: 10.11896/j.issn.1002-137X.2019.07.009
何英庆,李宁,王聪,陈彦成,徐键卉
HE Ying-qing,LI Ning,WANG Cong,CHEN Yan-cheng,XU Jian-hui
摘要: 在M2M通信中,提高设备的能源效率、延长设备的电池使用寿命是一个关键问题。文中研究了LTE-A网络中M2M上行通信的联合子载波和功率分配的能源效率问题,在保证M2M设备的基本传输时延以及LTE-A上行资源分配约束的前提下,得到资源分配的优化问题;由于直接求解该问题的计算复杂度相当高,因此文中进一步提出一种基于拉格朗日乘数法的子载波和功率分配算法,该算法在降低计算复杂度的同时,能够获得更低的功率消耗以及更高的能源效率。仿真结果表明,所提算法在功率消耗和能源效率方面更接近最优算法。
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