異構(gòu)密集網(wǎng)中一種抗多竊聽者的協(xié)作安全波束成形方案

黃開枝; 張波

doi:10.11999/JEIT161152

異構(gòu)密集網(wǎng)中一種抗多竊聽者的協(xié)作安全波束成形方案

doi: 10.11999/JEIT161152

黃開枝¹,
張波¹

基金項(xiàng)目:

河南省科技攻關(guān)計(jì)劃項(xiàng)目(152102210013)，國(guó)家863計(jì)劃項(xiàng)目 (2015AA01A708)，國(guó)家自然科學(xué)基金(61171108, 61471396)

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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-10-27
- 修回日期: 2017-02-26
- 刊出日期: 2017-07-19

Cooperative Secrecy Beamforming Scheme Resistant to Multi-eavesdroppers in Dense Heterogeneous Networks

HUANG Kaizhi¹,
ZHANG Bo¹

Funds:

The Program for Science and Technology Development of Henan Province (152102210013), The National 863 Program of China (2015AA01A708), The National Natural Science Foundation of China (61171108, 61471396)

摘要

摘要: 為保證異構(gòu)密集網(wǎng)中多個(gè)竊聽者聯(lián)合竊聽時(shí)宏基站用戶的下行通信安全，該文提出一種抗多竊聽者的協(xié)作安全波束成形方案。該方案通過聯(lián)合設(shè)計(jì)宏基站和微基站的最優(yōu)協(xié)作波束成形矢量，使保密信息傳輸速率提升的同時(shí)，其他用戶的下行信號(hào)進(jìn)一步干擾竊聽者，從而最大化系統(tǒng)安全速率。為獲得最優(yōu)的協(xié)作波束成形矢量，在考慮其他合法用戶的服務(wù)質(zhì)量及基站功率限制時(shí)，對(duì)該安全速率最大化問題進(jìn)行建模。采用半定松弛技術(shù)及Lagrange 對(duì)偶理論將原始的非凸優(yōu)化問題轉(zhuǎn)化為一系列的半定規(guī)劃問題進(jìn)行求解。仿真結(jié)果驗(yàn)證了所提方案的有效性和安全性。
- 異構(gòu)密集網(wǎng) /
- 物理層安全 /
- 協(xié)作安全波束成形 /
- 半定松弛 /
- 半定規(guī)劃
Abstract: To guarantee the secrecy of downlink confidential information sent to marcocell user when there were multiple colluding eavesdroppers in dense heterogenous networks, a cooperative secrecy beamforming scheme resistant to multi-eavesdroppers is proposed in the paper. The transmission rate of confidential information is improved and eavesdroppers are jammed by jointly optimizing the beamforming vectors at macrocell base station and femtocell base stations. To obtain the optimal beamforming vectors, the problem of maximizing the secrecy rate is modeled under the limitations of quality of service and base station power. The secrecy rate maximization problem is non-convex. Due to the intractability, this problem is recast into a series of SemiDefinite Programs (SDP) using the SemiDefinite Relaxation (SDR) technique and the Lagrange duality. Simulation results validate the efficacy and the secrecy of the proposed scheme.
- Dense heterogeneous networks /
- Physical layer security /
- Cooperative secrecy beamforming /
- SemiDefinite Relaxation (SDR) /
- SemiDefinite Program (SDP)

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參考文獻(xiàn)(26)

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