移动自组织网络中基于智能混合扩频的高效媒体访问控制方法

发布时间：2018-06-22 01:31

本文选题：移动自组织网络 + 智能混合扩频　；参考：《计算机应用研究》2017年07期

【摘要】：针对现存的大多数媒体访问控制(MAC)方法中断概率较高、扩频增益的传输容量不佳等问题,在自组织网络中,提出一种基于智能混合扩频(SMSS)的MAC方法,其目的是利用稳健的调频扩频(DSSS)物理层降低远场干扰,运用智能慢跳频管理近场干扰。在低中断概率约束情况下,SMSS确保了在活跃接收器处的最小信号与干扰加噪声比(SINR)的阈值。SMSS不抑制空间中的任何节点,也不及时将它们释放出来。在跳频区大小可变的情况下,推导出传输容量下限的数学模型。实验结果表明,提出的SMSS MAC方法在传输容量方面具有较大优势,超过了ALOHA和基于保护区的扩频MAC协议。对于较小的扩频增益,其优势更为明显。
[Abstract]:In order to solve the problems of high outage probability and poor transmission capacity of spread spectrum gain in most existing media access control (MAC) methods, a MAC method based on intelligent hybrid spread spectrum (SMSS) is proposed in ad hoc networks. The aim is to reduce far-field interference by using robust frequency-modulated spread spectrum (DSSS) physical layer and to use intelligent slow-hopping frequency to manage near-field interference. In the case of low interruption probability constraint, SMSS ensures that the minimum signal-to-interference noise ratio (SINR) threshold at active receivers does not suppress any nodes in space, nor does it release them in time. The mathematical model of the lower limit of transmission capacity is derived under the condition of variable frequency hopping region. The experimental results show that the proposed SMSS MAC method is superior to Aloha and the spread spectrum MAC protocol based on protected areas in terms of transmission capacity. For small spread spectrum gain, its advantage is more obvious.
【作者单位】：汉江师范学院计算机科学系;武汉大学软件学院;
【基金】：国家自然科学基金资助项目(61272112) 湖北省教育科学“十二五”规划资助项目(2012B454)
【分类号】：TN929.5

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