本文選題：異構(gòu)網(wǎng)絡(luò) + 物理層安全��； 參考：《華北電力大學(xué)》2017年碩士論文

【摘要】：異構(gòu)網(wǎng)絡(luò)技術(shù)的逐漸普及,MIMO技術(shù)的廣泛應(yīng)用,使得無線通信系統(tǒng)的整體性能得到了很大提高。然而,由于無線信道的開放性,系統(tǒng)的保密信息存在著很大的泄露風(fēng)險,因此系統(tǒng)的通信安全顯得越來越重要。跟傳統(tǒng)高層加密有很大不同,物理層安全技術(shù)可以利用信道的隨機(jī)性,從物理層上實現(xiàn)信息的安全傳輸。它從信息論意義上確保了竊聽用戶無法獲取發(fā)射端發(fā)送的消息信號,在信息安全等研究領(lǐng)域具有廣闊的發(fā)展前景。針對異構(gòu)網(wǎng)中的小區(qū)邊緣用戶的物理層安全問題。本文對安全性能較差的小區(qū)邊緣用戶進(jìn)行了分析。通過對小區(qū)邊緣用戶的安全速率進(jìn)行優(yōu)化分析,提出了基于多基站協(xié)作的安全協(xié)作傳輸策略,并結(jié)合波束成形來提高合法接收端的接收信號強(qiáng)度,削弱竊聽端的接收信號強(qiáng)度,從而實現(xiàn)了小區(qū)邊緣用戶的信息安全。最終的仿真驗證了算法的準(zhǔn)確性。針對合法用戶物理層安全與能效的權(quán)衡問題。本文在兩層異構(gòu)網(wǎng)中,通過利用宏基站與微基站之間的協(xié)作以及有意引入的共信道干擾,設(shè)計出一種協(xié)作波束成形方案,保證了合法用戶的信息安全;將微小區(qū)中合法用戶的安全速率與系統(tǒng)能效相結(jié)合,利用凸優(yōu)化理論進(jìn)行算法的推導(dǎo),最終得到了一種功率分配方案。最后的仿真結(jié)果從保密能效和SINR兩個角度證明了所提算法在提高系統(tǒng)安全性和降低能耗方面的優(yōu)勢。
[Abstract]:With the gradual popularization of heterogeneous network technology and the wide application of MIMO technology, the overall performance of wireless communication system has been greatly improved. However, because of the openness of the wireless channel, the security of the system becomes more and more important. Different from the traditional high layer encryption, the physical layer security technology can make use of the randomness of the channel to realize the secure transmission of information from the physical layer. It ensures that the eavesdropping user can not get the message signal from the transmitter in the sense of information theory, and has a broad development prospect in the field of information security and other research fields. Aiming at the physical layer security of cell edge users in heterogeneous networks. In this paper, the edge users with poor security performance are analyzed. Based on the analysis of the security rate of the users at the edge of the cell, a secure cooperative transmission strategy based on the cooperation of multi-base stations is proposed, and the beamforming is combined to improve the received signal intensity of the legal receiver and weaken the received signal intensity of the eavesdropping terminal. Thus, the information security of the edge users is realized. Finally, the accuracy of the algorithm is verified by simulation. The tradeoff between physical layer safety and energy efficiency of legitimate users. In this paper, a cooperative beamforming scheme is designed to ensure the information security of legitimate users by utilizing the cooperation between the macro base station and the microbase station and the intentional co-channel interference in the two-layer heterogeneous network. Combining the security rate of legitimate users in microcell and system energy efficiency, the algorithm is deduced by convex optimization theory. Finally, a power allocation scheme is obtained. Finally, the simulation results show the advantages of the proposed algorithm in improving system security and reducing energy consumption from the perspectives of secure energy efficiency and SINR.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN918

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 謝龍;張欣;曹亙;楊大成;;異構(gòu)網(wǎng)絡(luò)增強(qiáng)型小區(qū)間干擾協(xié)調(diào)技術(shù)研究[J];移動通信;2012年10期

相關(guān)碩士學(xué)位論文 前3條

1 邱暢嘯;異構(gòu)網(wǎng)絡(luò)下基于能效的資源分配和切換調(diào)度機(jī)制研究[D];電子科技大學(xué);2015年

2 馮皓;基于空間泊松點過程的D2D技術(shù)研究[D];北京交通大學(xué);2015年

3 張聰;MIMO系統(tǒng)中物理層安全研究[D];北京郵電大學(xué);2015年

，

本文編號：1875514