Nakagami信道下MIMO解碼轉(zhuǎn)發(fā)中繼系統(tǒng)的安全性能分析

趙睿; 林鴻鑫; 賀玉成; 彭盛亮; 周林

doi:10.11999/JEIT151236

Nakagami信道下MIMO解碼轉(zhuǎn)發(fā)中繼系統(tǒng)的安全性能分析

doi: 10.11999/JEIT151236

2.
(華僑大學(xué)廈門(mén)市移動(dòng)多媒體通信重點(diǎn)實(shí)驗(yàn)室廈門(mén) 361021)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61401165, 61362018, 61302095)，福建省自然科學(xué)基金(2015J01262, 2014J01243)，福建省科技創(chuàng)新平臺(tái)建設(shè)項(xiàng)目(2012H2002)

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出版歷程
- 收稿日期: 2015-11-05
- 修回日期: 2016-03-21
- 刊出日期: 2016-08-19

Secrecy Performance Analysis of MIMO Decode-and-forward Relay Systems in Nakagami Channels

2.
(Ximen Key Laboratory of Mobile Multimedia Communications, Huaqiao University, Xiamen 361021, China)

Funds:

The National Natural Science Foundation of China (61401165, 61362018, 61302095), The Natural Science Foundation of Fujian Province (2015J01262, 2014J01243), Science and Technology Innovation Platform Funds of Fujian Province (2012H2002)

摘要

摘要: 在協(xié)同自適應(yīng)解碼轉(zhuǎn)發(fā)中繼系統(tǒng)中，該文針對(duì)Nakagami-m衰落信道，研究了基于多天線低復(fù)雜度的機(jī)會(huì)式傳輸策略的物理層安全性能。為充分利用天線分集增益提升系統(tǒng)安全性能，發(fā)送節(jié)點(diǎn)均采用發(fā)送天線選擇策略，接收節(jié)點(diǎn)均采用最大比合并策略。推導(dǎo)了系統(tǒng)安全中斷概率的閉合表達(dá)式，并進(jìn)一步提供了漸近性能分析，得到了系統(tǒng)的安全分集階數(shù)。仿真結(jié)果驗(yàn)證了理論分析的正確性，并揭示了各系統(tǒng)參數(shù)對(duì)機(jī)會(huì)式傳輸方案的安全性能的影響。結(jié)果表明，通過(guò)增加合法節(jié)點(diǎn)的天線數(shù)和增大合法信道的Nakagami衰落信道參數(shù)可顯著提升系統(tǒng)安全性能。
- 無(wú)線通信 /
- 物理層安全 /
- 自適應(yīng)解碼轉(zhuǎn)發(fā) /
- Nakagami-m衰落信道 /
- 安全中斷概率
Abstract: The physical layer security performances of low-complexity opportunistic transmission strategy based on multiple antenna are investigated for cooperative adaptive decode-and-forward relaying system in Nakagami-m fading channels. To fully utilize the antenna diversity gain to improve the system security performance, the transmitting nodes apply the transmit antenna selection strategy, and the receiving nodes apply the maximal ratio combining strategy. The closed-form expressions of secrecy outage probability are derived, the asymptotic analysis of secrecy performance is further provided, and the secrecy diversity order are also obtained. Simulation results verify the correctness of theoretical analysis and identify the effects of several system parameters on the secrecy performance of the opportunistic transmission strategy. It is shown that the system secrecy performance can be greatly improved by increasing the number of antennas at the legitimate nodes and increasing the Nakagami fading channel parameters of legitimate channels.
- Wireless communication /
- Physical layer security /
- Adaptive decode-and-forward /
- Nakagami-m fading channel /
- Secrecy outage probability

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參考文獻(xiàn)(16)

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