针对无线网络的随机干扰技术研究

摘要

Performance of wireless network under jamming and how to detect jamming are important researcn areas in wireless network. A two dimension MARKOV model is proposed, through which performance can be analyzed in probability manner. A jamming detection model is proposed by counting the idle slot of wireless channel, the theoretical successful transmission probability can be inferred, then we compare it with the real transmission probability has measured, network jamming factor can be obtained to distinguish jamming. Vali- dation of the model is performed by NS2 network simulator.%对存在随机干扰时的无线网络性能分析和对网络中存在干扰的检测，是关于无线网络的重要研究内容。本文建立了一个存在干扰机的无线网络二维马尔可夫模型，以概率的形式对无线网络的相关性能进行分析；并在此基础上建立了一个干扰检测模型，通过测量无线网络信道空闲时隙数来推测网络在未受干扰时理论成功发送概率，与实际测量得到的发送成功概率比较得到网络干扰因子，实现了对干扰的检测；利用NS2网络模拟对模型进行了验证。