OFDMA多跳中继网络中基于能效的频谱规划策略

发布时间：2018-05-08 22:26

  本文选题：OFDMA + 多跳中继　； 参考：《铁道学报》2014年10期

【摘要】：OFDMA中继网络的频谱规划是解决小区内全部资源如何分配给3种链路(直传链路、基站到中继站链路和中继站到用户链路)有效使用的问题。现有的动态频谱规划策略都是根据链路负载需求或干扰情况等,以提高系统吞吐量为目标进行频谱规划。本文针对OFDMA多跳中继网络,综合考虑用户的速率需求、信道质量和干扰情况,以能效为优化目标提出一种基于能效的动态频谱规划策略。基于实际系统中离散的自适应调制编码AMC(Adaptive Modulation and Coding Scheme)建立能效最优化频谱规划模型,并采用最优化理论中的整数规划对模型进行求解。仿真结果表明,基于能效的频谱规划策略在保证用户速率需求的情况下可降低总发射能量,提高能量使用效率,并对用户不均匀分布场景有较强的适应性。
[Abstract]:The spectrum planning of OFDMA relay networks is an effective solution to how all resources in a cell can be allocated to 3 links (direct link, base station to relay station link and relay station to user link). The existing dynamic spectrum planning strategies are based on link load requirements or interference conditions to improve system throughput as the target. In this paper, a dynamic spectrum planning strategy based on energy efficiency is proposed for the OFDMA multi hop relay network, considering the user's rate requirements, channel quality and interference. Based on the adaptive modulation coding AMC (Adaptive Modulation and Coding Scheme) based on the actual system, the energy efficiency optimization is established. The spectrum planning model is used to solve the model with the integer programming in optimization theory. The simulation results show that the energy efficiency based spectrum planning strategy can reduce the total emission energy, improve the efficiency of the energy use and have a strong adaptability to the user's uneven distribution scenario.

【作者单位】： 西南交通大学信息编码与传输四川省重点实验室;
【基金】：国家重点基础研究发展计划(973计划)(2012CB316100) 国家自然科学基金(61071108,61032002)
【分类号】：TN929.531
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本文编号：1863358