【摘要】：描述了基于放大轉(zhuǎn)發(fā)中繼underlay模式下的D2D傳輸模型,研究了用戶最大發(fā)射功率受限前提下利用單向放大轉(zhuǎn)發(fā)中繼的D2D通信系統(tǒng)功率分配方法.首先從D2D系統(tǒng)端到端信干噪比表達(dá)出發(fā),推導(dǎo)出D2D鏈路和蜂窩上下行鏈路的可達(dá)和速率,據(jù)此建立了可達(dá)和速率的聯(lián)合功率優(yōu)化模型,根據(jù)功率約束條件將雙目標(biāo)優(yōu)化模型轉(zhuǎn)化為單目標(biāo)優(yōu)化模型;然后采用Pareto優(yōu)化方法最大化可達(dá)和速率,并提出相應(yīng)的低復(fù)雜度實(shí)現(xiàn)算法.仿真結(jié)果表明:在中低信噪比區(qū)域,基于放大轉(zhuǎn)發(fā)中繼輔助的D2D通信性能顯著優(yōu)于傳統(tǒng)D2D通信模式,采用Pareto功率優(yōu)化方法可進(jìn)一步提升D2D通信以及蜂窩上下行鏈路的系統(tǒng)可達(dá)和速率.
[Abstract]:This paper describes a D2D transmission model based on underlay mode for amplifying and forwarding relay, and studies the power allocation method of D2D communication system using one-way amplification relay under the premise of maximum transmit power limitation. Based on the end-to-end signal-to-noise ratio expression of D2D system, the reachability rate of D2D link and cellular uplink and downlink is derived, and the joint power optimization model of reachability sum rate is established. According to the power constraint condition, the two-objective optimization model is transformed into the single-objective optimization model. Then the Pareto optimization method is used to maximize the reachability rate and the corresponding low complexity algorithm is proposed. The simulation results show that the performance of D2D communication based on amplifying and forwarding relay is better than that of traditional D2D communication mode in the low signal-to-noise ratio region. Using Pareto power optimization method can further improve the system reachability and rate of D2D communication and cellular uplink and downlink.
【作者單位】： 南京郵電大學(xué)江蘇省無線通信重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家科技重大專項(xiàng)基金(No.2011ZX03005-004-03) 國家“973”重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃基金(No.2013CB329005) 國家自然科學(xué)基金(No.61171093) 江蘇省優(yōu)勢學(xué)科建設(shè)項(xiàng)目基金(No.YX002001)資助
【分類號(hào)】：TN929.5

【相似文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前2條

1 李玉兵;未來移動(dòng)通信系統(tǒng)中的D2D關(guān)鍵技術(shù)研究[D];電子科技大學(xué);2012年

2 皮愛霞;LTE系統(tǒng)下D2D多播重傳技術(shù)研究[D];西安電子科技大學(xué);2014年

，

本文編號(hào)：2361298