異步多載波D2D通信性能分析
發(fā)布時間：2018-07-16 21:22
【摘要】：近年來,隨著全球范圍內(nèi)移動通信技術(shù)的不斷發(fā)展,無線通信已經(jīng)從以話音業(yè)務(wù)為代表的第一代(1G)發(fā)展到以高速移動數(shù)據(jù)業(yè)務(wù)為代表的第四代(4G),目前4G已被大規(guī)模商用。但是隨著移動用戶的快速增長,帶來商機(jī)的同時也帶來了壓力,比如頻譜資源匱乏、終端設(shè)備的能量損耗速度加快以及網(wǎng)絡(luò)通信量的急劇增長等等,因此下一代移動通信技術(shù)5G開始受到行業(yè)的廣泛關(guān)注。作為未來5G的關(guān)鍵技術(shù),終端直通(D2D)技術(shù)允許移動終端不經(jīng)過基站直接進(jìn)行點到點的通信,它是一種允許終端之間通過復(fù)用小區(qū)資源直接進(jìn)行通信的技術(shù)。與傳統(tǒng)模式的通信方式相比,D2D通信具有節(jié)約頻譜資源、擴(kuò)大網(wǎng)絡(luò)容量、降低終端能耗、縮短延時等優(yōu)點。因此,公共安全場景中D2D設(shè)備發(fā)現(xiàn)的系統(tǒng)級分析成為重要的研究課題。本文主要對異步D2D網(wǎng)絡(luò)中鄰近設(shè)備發(fā)現(xiàn)進(jìn)行系統(tǒng)級性能分析,假設(shè)物理層采用OFDM技術(shù),所以對于異步D2D網(wǎng)絡(luò)中設(shè)備發(fā)現(xiàn)的性能研究,可看作是一個特定場景的異步OFDM系統(tǒng)的性能研究。首先,對OFDM發(fā)送時間偏差的影響進(jìn)行了詳細(xì)的鏈路級分析,根據(jù)鏈路級分析,我們基于異步OFDM網(wǎng)絡(luò)建立了一個易處理的一階SINR模型,它可以很方便地用于異步D2D網(wǎng)絡(luò)的系統(tǒng)級研究中,解決了系統(tǒng)級研究建模上的難題;其次,基于前面所建立的一階SINR模型,研究異步D2D網(wǎng)絡(luò)的系統(tǒng)級性能,其中終端設(shè)備的位置服從泊松點過程(PPP)分布且發(fā)送的是OFDM波形,從一個發(fā)現(xiàn)設(shè)備的角度出發(fā),對一些重要的參量進(jìn)行統(tǒng)計分析,包括可解碼的發(fā)送設(shè)備的平均數(shù)目,最靠近D2D用戶的解碼率,系統(tǒng)吞吐量;最后,為了減輕異步的損失,我們比較并討論了4個可能的措施,包括擴(kuò)展循環(huán)前綴,接收時間提前,動態(tài)調(diào)整接收窗位置和半靜態(tài)調(diào)整接收窗位置,這些方法復(fù)雜度各不相同,可以應(yīng)用于不同的通信場景。
[Abstract]:In recent years, with the continuous development of mobile communication technology in the world, wireless communication has developed from the first generation (1G) represented by voice services to the fourth generation (4G) represented by high-speed mobile data services. However, with the rapid growth of mobile users, it brings business opportunities as well as pressure, such as the scarcity of spectrum resources, the acceleration of energy loss of terminal equipment, and the rapid growth of network traffic, and so on. Therefore the next generation mobile communication technology 5 G begins to receive the industry widespread attention. As the key technology of 5G in the future, the terminal through (D2D) technology allows the mobile terminal to communicate directly without passing through the base station. It is a technology that allows the terminals to communicate directly through the multiplexed cell resources. Compared with the traditional communication mode, D2D communication has the advantages of saving spectrum resources, expanding network capacity, reducing terminal energy consumption and shortening delay. Therefore, system-level analysis of D2D device discovery in public security scenarios has become an important research topic. This paper mainly analyzes the performance of proximity device discovery in asynchronous D2D network, assuming that OFDM technology is used in physical layer, so the performance of device discovery in asynchronous D2D network is studied. It can be regarded as a performance study of asynchronous OFDM system with a specific scenario. Firstly, the influence of OFDM transmission time deviation is analyzed in detail. According to link level analysis, we establish a first-order SINR model based on asynchronous OFDM network. It can be easily used in system-level research of asynchronous D2D network, and solves the problem of system-level modeling. Secondly, based on the first order SINR model, the performance of asynchronous D2D network at system level is studied. The position of terminal equipment is distributed from Poisson Point process (PPP) and transmitted by OFDM waveform. From the point of view of a discovery device, some important parameters are analyzed statistically, including the average number of decoded transmitting devices. Finally, in order to reduce the asynchronous loss, we compared and discussed four possible measures, including extending cyclic prefix, early receiving time, The dynamic adjustment of the receiving window position and the semi-static adjustment of the receiving window position have different complexity and can be applied to different communication scenarios.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN929.5
本文編號：2127710
[Abstract]:In recent years, with the continuous development of mobile communication technology in the world, wireless communication has developed from the first generation (1G) represented by voice services to the fourth generation (4G) represented by high-speed mobile data services. However, with the rapid growth of mobile users, it brings business opportunities as well as pressure, such as the scarcity of spectrum resources, the acceleration of energy loss of terminal equipment, and the rapid growth of network traffic, and so on. Therefore the next generation mobile communication technology 5 G begins to receive the industry widespread attention. As the key technology of 5G in the future, the terminal through (D2D) technology allows the mobile terminal to communicate directly without passing through the base station. It is a technology that allows the terminals to communicate directly through the multiplexed cell resources. Compared with the traditional communication mode, D2D communication has the advantages of saving spectrum resources, expanding network capacity, reducing terminal energy consumption and shortening delay. Therefore, system-level analysis of D2D device discovery in public security scenarios has become an important research topic. This paper mainly analyzes the performance of proximity device discovery in asynchronous D2D network, assuming that OFDM technology is used in physical layer, so the performance of device discovery in asynchronous D2D network is studied. It can be regarded as a performance study of asynchronous OFDM system with a specific scenario. Firstly, the influence of OFDM transmission time deviation is analyzed in detail. According to link level analysis, we establish a first-order SINR model based on asynchronous OFDM network. It can be easily used in system-level research of asynchronous D2D network, and solves the problem of system-level modeling. Secondly, based on the first order SINR model, the performance of asynchronous D2D network at system level is studied. The position of terminal equipment is distributed from Poisson Point process (PPP) and transmitted by OFDM waveform. From the point of view of a discovery device, some important parameters are analyzed statistically, including the average number of decoded transmitting devices. Finally, in order to reduce the asynchronous loss, we compared and discussed four possible measures, including extending cyclic prefix, early receiving time, The dynamic adjustment of the receiving window position and the semi-static adjustment of the receiving window position have different complexity and can be applied to different communication scenarios.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN929.5
【參考文獻(xiàn)】
相關(guān)期刊論文 前1條
1 湯孟平,唐守正,雷相東,張會儒,洪玲霞,馮益明;Ripley's K(d)函數(shù)分析種群空間分布格局的邊緣校正[J];生態(tài)學(xué)報;2003年08期
相關(guān)碩士學(xué)位論文 前2條
1 吳師誠;LTE網(wǎng)絡(luò)中基于中繼技術(shù)的D2D通信系統(tǒng)性能分析[D];南京郵電大學(xué);2013年
2 付國冬;WiMAX對下一代通信技術(shù)的影響[D];北京郵電大學(xué);2006年
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