【正文】
本科畢業(yè)設(shè)計(jì)論文題 目 協(xié)作通信系統(tǒng)中的選擇DF中繼協(xié)議研究 畢業(yè)任務(wù)書一、題目協(xié)作通信系統(tǒng)中的選擇DF中繼協(xié)議研究二、指導(dǎo)思想和目的要求無線通信技術(shù)在近二十年來獲得迅猛的進(jìn)步。它的發(fā)展離不開眾多基礎(chǔ)技術(shù),如集成電路、能量存儲以及天線技術(shù)的發(fā)展。近幾年來,被認(rèn)為對通信技術(shù)有巨大推動(dòng)作用的是MIMO技術(shù)。該技術(shù)在接收端和發(fā)射端使用多根天線,從而形成多條路徑,通過數(shù)字信號處理技術(shù)對多條路徑傳送的信號進(jìn)行形成和合并,提高了接收信號的質(zhì)量和數(shù)據(jù)傳送速率。協(xié)作通信正是在MIMO的推動(dòng)下產(chǎn)生的,它把MIMO通信技術(shù)推廣到更多的應(yīng)用場景中。協(xié)作通信過程中一個(gè)很關(guān)鍵的方面就是對來自中繼的源節(jié)點(diǎn)的信息處理。不同的處理方案導(dǎo)致了不同的協(xié)作通信協(xié)議。研究協(xié)作通信系統(tǒng)中中繼協(xié)議,使得系統(tǒng)的誤碼率降低,從而使整個(gè)系統(tǒng)的吞吐量增大。通過對通信協(xié)議的研究,來選擇最優(yōu)的通信協(xié)議,從而進(jìn)一步推動(dòng)了協(xié)作通信技術(shù)的演進(jìn)與發(fā)展。本文主要研究協(xié)作通信系統(tǒng)中選擇DF中繼協(xié)議,分析在不同的協(xié)作協(xié)議下,通信系統(tǒng)的性能狀況。 三、主要技術(shù)指標(biāo)。,了解系統(tǒng)的信噪比和最優(yōu)功率分配。四、進(jìn)度和要求第12周:查閱資料,整理讀書筆記。第36周:根據(jù)畢業(yè)設(shè)計(jì)任務(wù)書的要求,了解設(shè)計(jì)內(nèi)容,獨(dú)立撰寫開題報(bào)告。第712周:開始寫論文,進(jìn)行不斷的修改并完成。第12周:進(jìn)行最后的定稿。第13周:準(zhǔn)備論文答辯。五、主要參考書及參考資料[1] ,and diversity in wireless networks:dfficient protocols and outage Transactions on Information Theory,50(12):30623080,December 2004.[2] and spacetime coded protocols for exploiting cooperative diversity in wireless Transactions Information Theory,49(10):24152425,October 2003.[3] ,and cooperation diversity,part I:System Transactions on Communications,51(11):19271938,November 2003.[4] and diversity through Proceedings of the IEEE International Symposiun on Information Theory,July 2002.[5][美],[埃及]Ahmed ,[中]Weifeng Su ,[阿根廷]Andres Kwasinski著,任品毅譯 協(xié)作通信及網(wǎng)絡(luò)[M] 電子工業(yè)出版社 學(xué)生 ___________ 指導(dǎo)教師 ___________ 系主任 ___________西北工業(yè)大學(xué)明德學(xué)院本科畢業(yè)設(shè)計(jì)論文目 錄摘 要 1Abstract 2第一章 緒論 背景、現(xiàn)狀 4 4 4 6 8第二章 MIMO技術(shù)以及協(xié)作分集 10 MIMO技術(shù)的提出與發(fā)展 10 10 11 11 12 12 協(xié)作分集技術(shù)之間的比較 13 13第三章 協(xié)作通信中各協(xié)作協(xié)議 14 14 15 16 16 17 17 17 17 18 18 20 協(xié)議分析 23第四章 單中繼協(xié)作通信 26 26 DF協(xié)議的誤符號率分析 28 28 SER上界及漸進(jìn)近似 29 30 AF協(xié)議的SER分析 30 30 31 漸進(jìn)緊的近似解 31 32 DF與AF協(xié)作增益的比較 32第五章 協(xié)作通信系統(tǒng)中選擇DF中繼協(xié)議研究 34 系統(tǒng)模型和協(xié)議描述 34 37 SER近似 37 一般協(xié)作協(xié)議的SER近似 38 38 39 40第六章 結(jié)束語 42 42 42致謝 44參考文獻(xiàn) 45畢業(yè)論文小結(jié) 46 摘 要多天線系統(tǒng)是提高系統(tǒng)容量和可靠性的一種有效手段。但在實(shí)際應(yīng)用中,由于移動(dòng)終端物理?xiàng)l件的制約,如終端的體積、功耗、多天線的位置設(shè)置等,限制了MIMO技術(shù)的應(yīng)用,為了克服這一MIMO應(yīng)用的限制,必須提出超越傳統(tǒng)點(diǎn)對點(diǎn)通信的新技術(shù)。一個(gè)無線網(wǎng)絡(luò)系統(tǒng)從通??梢员豢醋鲆恍┰噲D相互通信的節(jié)點(diǎn)的集合。但是,從一個(gè)角度而言,因?yàn)闊o線信道廣播特性的存在,我們可以將這些節(jié)點(diǎn)視為無線系統(tǒng)中一些分布式天線的集合。利用這一觀點(diǎn)。網(wǎng)絡(luò)中的節(jié)點(diǎn)可以相互協(xié)作進(jìn)行分布式傳輸和信息處理。一個(gè)協(xié)作節(jié)點(diǎn)對于源節(jié)點(diǎn)來說可看做作一個(gè)中繼節(jié)點(diǎn)。因?yàn)橐陨系脑颍瑓f(xié)作通信可以在從在源與目的節(jié)點(diǎn)之間產(chǎn)生類似MIMO信道的獨(dú)立傳輸鏈路。它是利用無線信道廣播特性在節(jié)點(diǎn)間相互輔助的一種新的架構(gòu),可以以一種分布式的方式來進(jìn)行通信處理,并能夠獲得在MIMO系統(tǒng)所得的相同的優(yōu)勢。這樣的一種觀點(diǎn)能夠帶來不同的新通信技術(shù)以提高通信容量、速率和性能;降低電池?fù)p耗和延長網(wǎng)路壽命;提高吞吐量和多接入方案的穩(wěn)定域;擴(kuò)展傳輸覆蓋范圍。近年來,人們對協(xié)作通信系統(tǒng)進(jìn)行了許多研究。本文主要研究協(xié)作通信系統(tǒng)中選擇DF中繼協(xié)議。本文首先闡述了MIMO的概念以及在協(xié)作通信系統(tǒng)的應(yīng)用;其次,對中繼信道的概念和不同的中繼協(xié)議進(jìn)行了討論;最后,對本文的重點(diǎn) ,選擇DF中繼的研究。 關(guān)鍵詞:協(xié)作分集,協(xié)作協(xié)議,選擇DF中繼協(xié)議AbstractMultiple antenna system can improve the reliability and capacity of wireless munication. However, in practical applications, the physical conditions in the mobile terminals limit the application of MIMO technology. For example, the size of the mobile terminal, the power consumption, the set of multiple antenna’s locations. To overe the limitations of the MIMO technology, it should be provided a new technology that beyond the PointtoPoint munications technology. A wireless network system usually is viewed as several collections of the munication between the nodes. But also, on the other hand, due to the existence of broadcast nature of wireless channel, we could regard the collection of distributed antennas in wireless system. Taking advantage of this point, nodes could be used for transferring and processing on the Internet. A cooperative node could be regard as a relay node for source node. Because of above of reasons, cooperative munication could be similar with independent transmission link between the source and destination node. It is a new set of architectural that making use of broadcast nature of wireless channel. It could deal with munication in the pattern of distributed antennas. It also could get the same advantages in the MIMO system. This point could bring different kinds of new munications technology. It could gain the capacity of munication, transmission rate and properties. It also could reduce the deterioration of battery and prolong the life of the Internet, and improve throughput and the stability region of multiply address access project, and expand the coverage of transmission. In recent years, people do a lot of researching in cooperative munication system. This paper conducts research on DF selection relaying in cooperative munication system. At first, this paper explains the definition of MIMO and the application of it in cooperative munication system. In addition, discussing the concept of relay channel, and relaying protocol. Finally, do a research on DF selection relaying which the key is of this paper. KEY WORDS:cooperative diversity,cooperative protocols,select the DF relaying protocol第一章 緒論、背景、現(xiàn)狀 無線通信技術(shù)在近二十年來獲得迅猛的進(jìn)步。它的發(fā)展離不開眾多基礎(chǔ)技術(shù),如集成電路、能量存儲以及天線技術(shù)的發(fā)展。近幾年來,被認(rèn)為對通信技術(shù)有巨大推動(dòng)作用的是MIMO技術(shù)。該技術(shù)在接收端和發(fā)射端使用多根天線,從而形成多條路徑,通過數(shù)字信號處理技術(shù)對多條路徑傳送的信號進(jìn)行形成和合并,提高了接收信