本文選題：移動自組織網(wǎng)絡(luò) + 智能混合擴頻　； 參考：《計算機應(yīng)用研究》2017年07期

【摘要】：針對現(xiàn)存的大多數(shù)媒體訪問控制(MAC)方法中斷概率較高、擴頻增益的傳輸容量不佳等問題,在自組織網(wǎng)絡(luò)中,提出一種基于智能混合擴頻(SMSS)的MAC方法,其目的是利用穩(wěn)健的調(diào)頻擴頻(DSSS)物理層降低遠場干擾,運用智能慢跳頻管理近場干擾。在低中斷概率約束情況下,SMSS確保了在活躍接收器處的最小信號與干擾加噪聲比(SINR)的閾值。SMSS不抑制空間中的任何節(jié)點,也不及時將它們釋放出來。在跳頻區(qū)大小可變的情況下,推導(dǎo)出傳輸容量下限的數(shù)學(xué)模型。實驗結(jié)果表明,提出的SMSS MAC方法在傳輸容量方面具有較大優(yōu)勢,超過了ALOHA和基于保護區(qū)的擴頻MAC協(xié)議。對于較小的擴頻增益,其優(yōu)勢更為明顯。
[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.
【作者單位】： 漢江師范學(xué)院計算機科學(xué)系;武漢大學(xué)軟件學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(61272112) 湖北省教育科學(xué)“十二五”規(guī)劃資助項目(2012B454)
【分類號】：TN929.5

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