基于QoS要求的全雙工中繼多載波安全系統(tǒng)的功率分配研究

馬丕明; 梁綏; 馬艷波; 熊海良; 楊陽

doi:10.11999/JEIT160461

基于QoS要求的全雙工中繼多載波安全系統(tǒng)的功率分配研究

doi: 10.11999/JEIT160461 cstr: 32379.14.JEIT160461

1.
(山東大學(xué)信息科學(xué)與工程學(xué)院濟(jì)南 250100) ②(山東財(cái)經(jīng)大學(xué)管理科學(xué)與工程學(xué)院濟(jì)南 250014)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61571272, 61401253)

計(jì)量
- 文章訪問數(shù): 1310
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-05-09
- 修回日期: 2016-12-02
- 刊出日期: 2017-04-19

QoS-driven Power Allocation over Multicarrier Full-duplex-Relay Secure Communication System

1.
(School of Information Science and Engineering, Shandong University, Jinan 250100, China)
2.
(School of Management Science and Engineering, Shandong University of Finance and Economics, Jinan 250014, China)

Funds:

The National Natural Science Foundation of China (61571272, 61401253)

摘要

摘要: 針對(duì)采用非理想干擾消除的全雙工中繼的多載波安全通信系統(tǒng)，借助安全有效容量引入時(shí)延服務(wù)質(zhì)量(Quality-of-Service, QoS)限制，該文提出一種滿足統(tǒng)計(jì)時(shí)延QoS要求的功率分配策略。在對(duì)中繼干擾功率和總功率進(jìn)行限制的條件下，考慮統(tǒng)計(jì)時(shí)延QoS要求，以最大化系統(tǒng)的安全有效容量為目標(biāo)，建立優(yōu)化問題，研究系統(tǒng)的功率分配策略。進(jìn)一步，通過泰勒近似方法，簡(jiǎn)化原凸優(yōu)化問題，并基于拉格朗日對(duì)偶方法和卡羅需-庫恩-塔克 (Karush-Kuhn-Tucker, KKT) 條件，采用子梯度迭代法得到最優(yōu)解并進(jìn)行仿真驗(yàn)證。仿真結(jié)果表明，提出的最優(yōu)功率分配策略可以獲得最大的安全有效容量，同時(shí)可以滿足時(shí)延QoS要求。
- 全雙工中繼 /
- 安全有效容量 /
- 功率分配 /
- 拉格朗日對(duì)偶方法 /
- 子梯度迭代方法
Abstract: For a multicarrier full-duplex-relay secure communication system with imperfect loop-interference cancelations, an optimal power allocation strategy with the statistical delay Quality-of-Service (QoS) guarantees is proposed, by using the delay QoS constraint with the concept of the secure effective capacity. Considering the statistical delay QoS guarantees and aiming to maximize the secure effective capacity, an optimization problem is formulated with the constraints of powers of both the whole system and the loop-interference of full-duplex relay. Then, in order to study the power allocation strategy, the original optimization problem is simplified by Taylor approximation and the problem is solved based on Lagrangian dual method and Karush-Kuhn-Tucker conditions. Therefore, the optimal solution is obtained by the sub-gradient iterative algorithm and simulation results are presented. The results show that the proposed optimal power allocation strategy can not only get the largest secure effective capacity but also satisfy the upper layer delay QoS requirement.
- Full-duplex relay /
- Secure effective capacity /
- Power allocation /
- Lagrangian dual method /
- Sub-gradient iterative algorithm

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