本文選題：認(rèn)知協(xié)作網(wǎng)絡(luò) + 物理層安全　； 參考：《東南大學(xué)》2017年博士論文

【摘要】：認(rèn)知協(xié)作通信技術(shù)在提高無線頻譜資源利用率的同時,可以有效改善無線通信質(zhì)量。然而,相關(guān)研究發(fā)現(xiàn)認(rèn)知協(xié)作通信網(wǎng)絡(luò)中存在大量的非法通訊行為,如惡意攻擊、惡意竊聽和數(shù)據(jù)偽造等。這些非法行為不僅給人們?nèi)粘Ｉ詈蜕鐣�(wěn)定造成巨大威脅,還給社會造成巨額經(jīng)濟(jì)損失。因此,提高無線傳輸?shù)陌踩猿蔀檎J(rèn)知協(xié)作通信中一個新的關(guān)鍵技術(shù)課題,需要引起更多的研究關(guān)注。本學(xué)位論文深入研究了認(rèn)知協(xié)作通信網(wǎng)絡(luò)場景下無線傳輸?shù)陌踩珕栴},利用物理層安全技術(shù)來提高無線傳輸?shù)陌踩阅?主要包括:針對單向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,研究如何提高無線傳輸?shù)陌踩阅?針對雙向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,研究如何提高無線傳輸?shù)母`聽概率與中斷概率性能;針對非理想CSI時單向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,研究如何提高無線傳輸?shù)陌踩阅?存在主用戶頻譜占用情況檢測錯誤時,針對單向放大轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,研究如何提高認(rèn)知協(xié)作網(wǎng)絡(luò)防竊聽的能力。論文的主要研究成果如下:1.針對單向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,提出了一種面向安全速率最大化目標(biāo)的中繼選擇方案。該方案從多個中繼節(jié)點中選出安全速率最大的中繼節(jié)點,被選擇的中繼節(jié)點會被用于將接收到的信息轉(zhuǎn)發(fā)給目的節(jié)點�？紤]到可能存在多個能成功譯碼源節(jié)點所傳輸信息的中繼節(jié)點,進(jìn)一步提出了一種多中繼選擇方案。在此方案中,能成功譯碼源節(jié)點所傳輸信息的中繼節(jié)點會被全部用于將譯碼后的信息轉(zhuǎn)發(fā)給目的節(jié)點。此外,在瑞利衰落信道環(huán)境下,分別分析了所提兩種方案的零安全容量概率。為了利用傳統(tǒng)最大最小中繼選擇方案與所提兩種方案進(jìn)行性能對比,也分析了該方案的零安全容量概率。分析結(jié)果表明,所提兩種方案比傳統(tǒng)最大最小中繼選擇方案更有效地對抗竊聽節(jié)點的惡意竊聽。此外,中繼節(jié)點數(shù)目增加時,所提兩種方案的零安全容量概率都隨之顯著降低。2.針對雙向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,提出了一種以人工噪聲信號為輔助的雙向中繼選擇方案。在所提方案中,源節(jié)點被靈活用于傳輸人工噪聲信號,以干擾竊聽節(jié)點惡意竊聽。具體來說,一個源節(jié)點在傳輸信息給中繼節(jié)點時,另外一個源節(jié)點會同時傳輸人工噪聲信號。此外,在瑞利衰落信道環(huán)境下,分析了所提方案的竊聽概率和中斷概率性能。分析結(jié)果表明,竊聽概率會隨著中斷概率的降低而增加。與此相反,當(dāng)中斷概率增加時,竊聽概率會隨之降低。給定中斷概率時,所提方案能獲得較低的竊聽概率。此外,在主信道平均增益與竊聽信道平均增益比較低時,所提方案也能夠確保認(rèn)知協(xié)作通信網(wǎng)絡(luò)上無線傳輸?shù)男畔踩?.針對非理想CSI時單向解碼轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,提出了一種結(jié)合信道估計誤差的中繼選擇方案。此方案會從多個中繼節(jié)點中選擇瞬時信道容量最大的中繼節(jié)點,并將被選擇的中繼節(jié)點用于將接收到的源節(jié)點信息轉(zhuǎn)發(fā)給目的節(jié)點。在瑞利衰落信道環(huán)境下,為了利用傳統(tǒng)直傳方案與所提方案進(jìn)行性能比較,同時分析了所提方案和直傳方案的中斷概率和竊聽概率性能。分析結(jié)果表明,無線傳輸?shù)闹袛喔怕室蠼档蜁r,竊聽概率會隨之增加;無線傳輸?shù)闹袛喔怕室筇岣邥r,竊聽概率會隨之降低。此外給定中斷概率時,所提方案能比直傳方案取得更低的竊聽概率。4.存在主用戶頻譜占用情況檢測錯誤時,針對單向放大轉(zhuǎn)發(fā)中繼通信場景中存在的竊聽行為,提出了一種基于全局信道狀態(tài)信息的中繼選擇方案。在所提方案中,主信道容量與竊聽信道容量差最大的中繼節(jié)點將會被選擇用于將接收到的信息轉(zhuǎn)發(fā)給目的節(jié)點。該方案不僅考慮了主信道的瞬時CSI,還包含了竊聽信道的瞬時CSI�？紤]到竊聽信道的瞬時CSI不容易被獲得,進(jìn)一步提出了基于局部信道狀態(tài)信息的中繼選擇方案。此方案只包含了主信道的瞬時CSI。在瑞利衰落信道環(huán)境下,分別分析了所提兩種方案的零安全容量概率。為了利用傳統(tǒng)輪詢調(diào)度方案進(jìn)行性能比較,也分析了該方案的零安全容量概率。分析結(jié)果表明,所提兩種方案都能比傳統(tǒng)輪詢調(diào)度方案更有效地提高無線傳輸?shù)陌踩阅堋?br/>[Abstract]:Cognitive cooperative communication technology can improve the utilization of radio spectrum resources and improve the quality of wireless communication. However, there are a lot of illegal communication behaviors in the cognitive cooperative communication network, such as malicious attack, malicious eavesdropping, and data forgery. These illegal behaviors not only give people daily life and social stability. Therefore, improving the security of wireless transmission has become a new key technology topic in the cognitive cooperative communication. It needs to attract more attention. This dissertation deeply studies the security problem of wireless transmission in the scene of cognitive cooperative communication network, and uses physical layer security. The whole technology improves the security performance of wireless transmission, mainly including the eavesdropping behavior in the one-way decoding and forwarding relay communication scene, research how to improve the security performance of wireless transmission, and study how to improve the eavesdropping probability and the interruption probability of the wireless transmission by the eavesdropping behavior in the two-way decoded relay communication scene. Performance; in view of the eavesdropping behavior in the non ideal CSI one-way decoding and forwarding relay communication scene, this paper studies how to improve the security performance of the wireless transmission. When the main user's spectrum occupancy detection is wrong, it studies how to improve the cognitive collaboration network anti eavesdropping against the eavesdropping line in the one-way amplifying and forwarding relay communication scene. The main research results of this paper are as follows: 1. in view of the eavesdropping behavior in the one-way decoding and forwarding relay communication scene, a relay selection scheme for maximizing the security rate is proposed. The scheme selects the relay node with the maximum security rate from multiple relay nodes, and the selected relay node will be used to receive the receiver. The incoming information is forwarded to the destination node. A multiple relay selection scheme is proposed, taking into account the relay nodes that may have multiple successful decode source nodes. In this scheme, the relay node that can successfully decode the information transmitted by the source node will be all used to forward the encoded information to the destination node. In the environment of Rayleigh fading channel, the zero security capacity probability of the two proposed schemes is analyzed respectively. In order to compare the performance of the traditional maximum minimum relay selection scheme with the two proposed schemes, the zero security capacity probability of the proposed scheme is also analyzed. The analysis results show that the two proposed schemes are compared with the traditional maximum and minimum relay selection. The case is more effective against the malicious eavesdropping of the eavesdropping node. In addition, when the number of relay nodes is increased, the zero security capacity probability of the two proposed schemes significantly reduces the eavesdropping behavior of the.2. for the two-way decoding and forwarding relay communication scene. A two-way relay selection scheme is proposed with the assistance of artificial noise signals. In the scheme, the source nodes are flexibly used to transmit artificial noise signals to interfere with the malicious eavesdropping of the eavesdropping nodes. In particular, a source node transmits artificial noise at the same time when transmitting information to the relay node. In addition, the hacking probability and the interruption probability of the proposed scheme are analyzed in the Rayleigh fading channel environment. The analysis results show that the probability of eavesdropping will increase with the decrease of the interruption probability. On the contrary, when the probability of interruption increases, the probability of eavesdropping will be reduced. The proposed scheme can obtain a lower probability of eavesdropping when given a given interruption probability. In addition, the proposed scheme can also be proposed when the average gain of the main channel is lower than the average gain of the eavesdropping channel. In order to ensure that the information security of the wireless transmission on the cognitive cooperative communication network is directed against the eavesdropping behavior in the one-way decoding and forwarding relay communication scene with non ideal CSI, a relay selection scheme combining the channel estimation error is proposed. This scheme selects the relay node with the maximum instantaneous channel capacity from multiple relay nodes, and will be.3.. The selected relay node is used to transmit the received source node information to the destination node. In the Rayleigh fading channel environment, in order to compare the performance of the traditional direct transmission scheme with the proposed scheme, the interruption probability and the eavesdropping probability performance of the proposed scheme and the direct transmission scheme are analyzed. The analysis results show that the interruption probability of the wireless transmission is presented. When the rate of rate is reduced, the probability of eavesdropping will increase, and the probability of eavesdropping will be reduced when the interrupt probability of wireless transmission is raised. In addition, the proposed scheme can obtain a lower probability of eavesdropping than the direct transmission scheme. When there is a detection error in the frequency occupancy of the main user, the.4. has a one-way amplification of the relay communication scene. A relay selection scheme based on the global channel state information is proposed. In the proposed scheme, the relay node with the maximum capacity of the main channel capacity and the capacity difference of the eavesdropping channel will be selected to forward the received information to the destination node. The scheme not only takes into account the instantaneous CSI of the main channel, but also contains the eavesdropping. The instantaneous CSI. of the channel is not easily obtained when the instantaneous CSI of the eavesdropping channel is not easy to be obtained. The relay selection scheme based on the local channel state information is further proposed. This scheme only contains the instantaneous CSI. of the main channel in the Rayleigh fading channel environment, and analyzes the zero security capacity probability of the proposed two schemes respectively. The performance of the scheduling scheme is compared and the zero security capacity probability of the scheme is analyzed. The analysis results show that the two proposed schemes can improve the security performance of the wireless transmission more effectively than the traditional polling scheduling scheme.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2017
【分類號】：TN918;TN92

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