本文選題：Filtered-OFDM + 資源分配　； 參考：《西南交通大學(xué)》2017年碩士論文

【摘要】：第五代移動通信(The 5th Generation mobile communication,5G)技術(shù)是為滿足當(dāng)前社會通信需求而發(fā)展起來的新一代移動通信系統(tǒng)。5G在面對多樣化業(yè)務(wù)類型、特定用戶需求和低時延高可靠性等方面對下一代通信,尤其是無線通信多載波技術(shù)提出了巨大挑戰(zhàn)。新型多載波Filtered-OFDM(F-OFDM)技術(shù)由于其技術(shù)特性能夠根據(jù)實際業(yè)務(wù)場景來動態(tài)選擇和配置不同波形參數(shù)而備受業(yè)界推崇,而5G技術(shù)與F-OFDM技術(shù)的結(jié)合必將衍生出多種應(yīng)用場景,以滿足眾多垂直行業(yè)的多樣化業(yè)務(wù)需求。基于未來特定業(yè)務(wù)需求,F-OFDM技術(shù)將現(xiàn)有系統(tǒng)頻帶劃分為能夠支持不同業(yè)務(wù)帶寬和可靠性需求的子帶,以此達到提升頻譜利用率的目的。同時,資源分配作為F-OFDM系統(tǒng)的關(guān)鍵技術(shù)之一,算法的精度會影響甚至決定整個系統(tǒng)的性,因此如何根據(jù)不同用戶的不同業(yè)務(wù)需求對資源進行分配以及如何配置軟空口參數(shù)是一個急待解決的問題。本文主要針對F-OFDM系統(tǒng)下行鏈路的資源分配進行研究,并與OFDM系統(tǒng)進行對比分析。為了確定F-OFDM子帶間的最優(yōu)保護間隔,本文基于不同的子帶保護間隔仿真分析了 F-OFDM系統(tǒng)的誤碼率性能,仿真結(jié)果表明在高階調(diào)制時只需要添加3個子載波長度的保護間隔就能消除子帶間的干擾,并與OFDM系統(tǒng)進行對比,且得出F-OFDM系統(tǒng)誤碼率性能更優(yōu)。由于F-OFDM這一新型多載波技術(shù)的引入,系統(tǒng)中無線資源基本單元可以配置不同的波形參數(shù),主要在幀結(jié)構(gòu)的靈活設(shè)計、子載波映射以及引入子帶濾波器的基礎(chǔ)上,再借鑒經(jīng)典的功率分配算法來進一步提高F-OFDM系統(tǒng)容量,因此,本文在F-OFDM下行鏈路基于不同信道模型,仿真分析了等功率分配算法、基本注水功率分配算法和注水功率分配算法三種資源分配算法對應(yīng)的系統(tǒng)容量,仿真結(jié)果表明在不同信道模型下,F-OFDM系統(tǒng)采用注水功率分配算法時系統(tǒng)容量相對較優(yōu)。
[Abstract]:The 5th Generation mobile communication 5G (5G) technology is a new generation mobile communication system developed to meet the needs of current social communication. The new generation of mobile communication system (.5G) is designed for the next generation communication in the face of diversified service types, specific user requirements and high reliability with low delay. In particular, the multi-carrier technology of wireless communication poses a great challenge. The new multi-carrier Filtered-OFDM F-OFDM (F-OFDM) technology is highly praised by the industry for its technical characteristics, which can dynamically select and configure different waveform parameters according to the actual business scenarios. However, the combination of 5G technology and F-OFDM technology will certainly lead to a variety of application scenarios. To meet the diversified business needs of many vertical industries. Based on the future specific service requirements, F-OFDM technology divides the existing system frequency band into sub-bands that can support different service bandwidth and reliability requirements, so as to improve the spectral efficiency. At the same time, as one of the key technologies of F-OFDM system, the accuracy of the algorithm will affect or even determine the whole system. Therefore, how to allocate resources according to the different business requirements of different users and how to configure the soft void parameters is an urgent problem to be solved. In this paper, the downlink resource allocation of F-OFDM system is studied and compared with OFDM system. In order to determine the optimal protection interval between sub-bands of F-OFDM, the BER performance of F-OFDM system is simulated and analyzed based on different sub-band protection intervals. The simulation results show that the inter-subband interference can be eliminated only by adding three sub-carrier length protection intervals in high-order modulation, and the BER performance of F-OFDM system is better than that of OFDM system. Because of the introduction of F-OFDM, a new type of multicarrier technology, the basic unit of wireless resources in the system can configure different waveform parameters, mainly based on the flexible design of frame structure, the subcarrier mapping and the introduction of sub-band filter. Then the classical power allocation algorithm is used for reference to further improve the capacity of F-OFDM system. Therefore, based on different channel models in the downlink of F-OFDM, the equal-power allocation algorithm is simulated and analyzed in this paper. The system capacity corresponding to the basic water injection power allocation algorithm and the water injection power allocation algorithm is compared. The simulation results show that the system capacity is relatively optimal when the water injection power allocation algorithm is used in the F-OFDM system under different channel models.
【學(xué)位授予單位】：西南交通大學(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】

相關(guān)期刊論文 前5條

1 楊凡;曾孝平;周繼華;阮定良;張波;吳華;;F-OFDM系統(tǒng)的基帶技術(shù)研究[J];重慶理工大學(xué)學(xué)報(自然科學(xué));2016年09期

2 張平;陶運錚;張治;;5G若干關(guān)鍵技術(shù)評述[J];通信學(xué)報;2016年07期

3 高亞楠;楊濤;胡波;;5G系統(tǒng)中F-OFDM算法設(shè)計[J];電子技術(shù)應(yīng)用;2016年07期

4 田廣東;王珊;何萍;段思睿;;基于LMS算法的UFMC系統(tǒng)自適應(yīng)干擾消除[J];電子技術(shù)應(yīng)用;2016年07期

5 張應(yīng)余;陳曄健;;基于UF-OFDM的5G空口設(shè)計[J];電信網(wǎng)技術(shù);2015年05期

，

本文編號：1875167