【摘要】：隨著無線通信技術(shù)的發(fā)展,無線通信將向網(wǎng)絡(luò)融合的方向發(fā)展,目的是通過綜合利用多種無線接入技術(shù)和無線通信方式,提高無線系統(tǒng)的頻譜利用率和網(wǎng)絡(luò)的容量。設(shè)備直通(D2D, Device to Device)通信就是其中的技術(shù)熱點之一,它允許蜂窩網(wǎng)絡(luò)中距離相近的兩個移動設(shè)備進行直接通信,可提高無線通信系統(tǒng)的資源利用率以及數(shù)據(jù)傳輸速率,減小用戶終端的發(fā)射功率,因此研究D2D通信技術(shù)有著十分重要的意義。 論文首先概述了課題的背景和研究內(nèi)容,介紹目前D2D通信的研究方向和研究動態(tài),包括信道測量機制以及會話發(fā)起與管理等,重點總結(jié)D2D通信系統(tǒng)的無線資源管理策略和相應(yīng)的算法機制。 隨后,論文描述了在多用戶多入多出(Multiple-Input Multiple-Output, MIMO)場景下的D2D復(fù)用多個蜂窩用戶資源的數(shù)學(xué)模型,并基于該模型提出了模式切換策略和迫零干擾消除(Zero Forcing Interference Elimination, ZFIE)策略,根據(jù)上述策略提出了模式距離和ZFIE距離,仿真結(jié)果表明,所提出的策略可以提高系統(tǒng)的吞吐量,從而提高系統(tǒng)的資源利用率。 最后,論文從綠色通信的角度出發(fā),以能量效率為目標函數(shù),提出了多個D2D對同時復(fù)用多個蜂窩用戶資源的數(shù)學(xué)模型,借助非合作博弈論的理論工具,建立對應(yīng)的潛在博弈模型,并證明了該模型存在唯一的納什均衡點。最后設(shè)計了相應(yīng)的算法流程,使蜂窩用戶和D2D終端可自主選擇合適的資源和功率。仿真結(jié)果表明,論文所提算法以較低的復(fù)雜度取得了較好的效果,在保證系統(tǒng)頻譜效率的同時,最優(yōu)化系統(tǒng)的能量效率。
[Abstract]:With the development of wireless communication technology, wireless communication will develop in the direction of network convergence, the purpose of which is to improve the spectrum efficiency and network capacity of wireless systems by making comprehensive use of a variety of wireless access technologies and wireless communication methods. Device pass-through (D2D, Device to Device) communication is one of the technical hotspots, which allows two mobile devices with similar distances to communicate directly in cellular networks, which can improve the resource utilization and data transmission rate of wireless communication systems. The transmission power of user terminal is reduced, so it is very important to study D2D communication technology. Firstly, this paper summarizes the background and research content of the subject, and introduces the current research direction and research trends of D2D communication, including channel measurement mechanism, session initiation and management, and so on. The wireless resource management strategy and corresponding algorithm mechanism of D2D communication system are summarized in detail. Then, the paper describes the mathematical model of D2D reuse of multiple cellular user resources in multi-user multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) scenario, and proposes a mode switching strategy and zero-forcing interference cancellation (Zero Forcing Interference Elimination, based on this model. ZFIE) strategy. According to the above strategy, the mode distance and ZFIE distance are proposed. The simulation results show that the proposed strategy can improve the throughput of the system and thus improve the resource utilization of the system. Finally, from the point of view of green communication, taking energy efficiency as the objective function, this paper proposes a mathematical model of multiple D2D pairs to reuse multiple cellular user resources at the same time, with the help of the theoretical tool of non-cooperative game theory. The corresponding potential game model is established, and it is proved that the model has a unique Nash equilibrium point. Finally, the corresponding algorithm flow is designed, so that cellular users and D2D terminals can choose the appropriate resources and power independently. The simulation results show that the proposed algorithm achieves good results with low complexity, and optimizes the energy efficiency of the system while ensuring the spectral efficiency of the system.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

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