计算机科学 ›› 2021, Vol. 48 ›› Issue (6A): 387-391.doi: 10.11896/jsjkx.201100064
尤凌1, 管张均2
YOU Ling1, GUAN Zhang-jun2
摘要： 近年来,随着国家“智慧海洋”战略的推进,以及海洋资源开发的需求,基于OFDM调制的水声通信技术得到了飞速发展,其关键问题之一就是主节点如何分配子载波资源以优化系统性能。据此,提出了一种低复杂度的水声OFDM子载波分配算法,以某个准则挑选出每轮待分配的候选节点,选择综合信道状态最差的节点分配子载波,在提高系统整体传输性能的同时兼顾了最差传感器节点的传输性能。此外,针对多轮分配的连续轮空现象,优先为上轮的“空闲”节点分配其上信道状况最好的子载波。仿真结果表明,改进的算法在几乎不降低原算法性能的前提下较好地解决了连续轮空的问题。算法的提出对水下多传感器组网的资源分配有一定的参考意义。
中图分类号:
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