计算机科学 ›› 2017, Vol. 44 ›› Issue (7): 84-88.doi: 10.11896/j.issn.1002-137X.2017.07.015
王悦
WANG Yue
摘要: 分析了路径损耗因子对802.11无线局域网的干扰与载波监听性能的影响,揭示了增大路径损耗因子的优势。基于SNR阈值模型和固定的载波监听阈值,分析了802.11a/b/g/n的主要比特速率。首先,在绝大多数的比特速率下(除比特速率为1和2Mbps外),增大路径损耗因子有利于增加SIR和减小干扰半径,这有助于提高比特速率和空间复用。其次,基于蜂窝网络拓扑 指出了最优网络容量随路径损耗因子的增大而增大。最后,图例分析和仿真实验揭示了增大路径损耗因子有助于改善载波监听的准确率。城市中由于建筑物和人口稠密会增大路径损耗因子,因此可提升无线局域网的性能。
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