基于Maotu DSP的TD-LTE上行接收端物理控制信道全鏈路設(shè)計(jì)與實(shí)現(xiàn)
發(fā)布時間：2019-03-16 13:32
【摘要】：隨著社會對無線通信的廣泛需求,LTE技術(shù)現(xiàn)在已經(jīng)投入我們的日常生活中。三大運(yùn)營商同時推出TD-LTE服務(wù),帶寬大、速率高、穩(wěn)定性好使其成為未來的發(fā)展趨勢。在中國,作為新興技術(shù)的TD-LTE家庭基站由于其安裝簡單、性能穩(wěn)定、功耗低,有著巨大的發(fā)展空間和實(shí)際應(yīng)用價值,其中基帶芯片的完全自主研發(fā)勢在必行。基帶芯片物理層的上行控制信道作為不可或缺的一部分,決定著信道傳輸質(zhì)量等多個重要因素,也就決定著基站各部分的性能。在這個背景下,本文完成了基于Maotu DSP的TD-LTE上行接收端物理控制信道全鏈路設(shè)計(jì)與實(shí)現(xiàn)。首先本文介紹了TD-LTE及物理層控制信道的基本概念、協(xié)議流程。主要介紹了LTE的發(fā)展過程、發(fā)展現(xiàn)狀及未來趨勢,并對TD-LTE關(guān)鍵技術(shù)做了簡要說明,并簡要介紹了家庭基站在國內(nèi)外的發(fā)展情況,進(jìn)而介紹了TD-LTE物理層協(xié)議的基礎(chǔ)知識,包括物理層幀結(jié)構(gòu)和物理層基本參數(shù)的含義,并簡要介紹了物理層控制信道格式1/1A/1B/2/2B的發(fā)送端設(shè)計(jì)流程。然后本文對物理層控制信道上行接收端做了基于浮點(diǎn)C模型的設(shè)計(jì)和實(shí)現(xiàn)。在VC++和Matlab為基礎(chǔ)的軟件環(huán)境下對浮點(diǎn)模型的算法進(jìn)行了實(shí)現(xiàn)。主要模塊包括解SC-FDMA符號、信道估計(jì)、濾波去噪、信道均衡、快速傅里葉變換、解正交振幅調(diào)制、子載波平均及符號平均。本文還對各個模塊的函數(shù)接口設(shè)計(jì)進(jìn)行了說明,并將浮點(diǎn)C模型和標(biāo)準(zhǔn)儀表數(shù)據(jù)進(jìn)行比較,畫出物理層控制信道各格式接收模型的性能曲線,并做出分析,證明C模型的性能符合協(xié)議規(guī)定。最后本文根據(jù)中科院自行研制的Maotu DSP的軟件及硬件特點(diǎn)對浮點(diǎn)C模型的設(shè)計(jì)方案進(jìn)行了定點(diǎn)實(shí)現(xiàn)及優(yōu)化。主要的技術(shù)有浮點(diǎn)數(shù)的定點(diǎn)化,包括整體的定點(diǎn)規(guī)則和每個模塊的定點(diǎn)設(shè)計(jì)。還有Maotu DSP使用的標(biāo)量指令集及向量指令集在各個模塊中的使用方法和優(yōu)化技巧,并設(shè)計(jì)了各個模塊的程序流程圖。然后對本文的DSP開發(fā)流程做了結(jié)果展示,并對浮定點(diǎn)模型性能做了均方誤差統(tǒng)計(jì),證明與浮定點(diǎn)模型的一致性,從而證明定點(diǎn)模型符合協(xié)議規(guī)定,并對各模塊內(nèi)的函數(shù)運(yùn)行效率與吞吐率做了統(tǒng)計(jì)與比較,完成定點(diǎn)模型的性能分析。本文的創(chuàng)新點(diǎn)在于基于中科院計(jì)算所完全自主研發(fā)的Maotu DSP,對TD-LTE物理層控制信道的基站接收端進(jìn)行了設(shè)計(jì)與實(shí)現(xiàn),也是Maotu DSP首次應(yīng)用于TD-LTE物理層控制信道的設(shè)計(jì),對未來Maotu DSP的其他設(shè)計(jì)及完全自主研發(fā)基帶芯片的設(shè)計(jì)及應(yīng)用起到了參考的作用。
[Abstract]:With the wide demand of wireless communication, LTE technology has been put into our daily life. At the same time, the three operators introduce TD-LTE service, which has the advantages of high bandwidth, high speed and good stability, which makes it a trend in the future. In China, as a new technology, TD-LTE home base station has great development space and practical application value because of its simple installation, stable performance and low power consumption, in which the complete independent research and development of baseband chip is imperative. As an indispensable part of the uplink control channel in the physical layer of the baseband chip, the transmission quality of the channel is determined by many important factors, and the performance of each part of the base station is also determined. Under this background, the full-link design and implementation of the physical control channel of TD-LTE uplink receiver based on Maotu DSP is completed in this paper. Firstly, this paper introduces the basic concept and protocol flow of TD-LTE and physical layer control channel. This paper mainly introduces the development process, present situation and future trend of LTE, and briefly explains the key technology of TD-LTE, and briefly introduces the development of home base station at home and abroad, and then introduces the basic knowledge of TD-LTE physical layer protocol. This paper includes the frame structure of physical layer and the meaning of basic parameters of physical layer, and briefly introduces the design flow of transmitter of physical layer control channel format 1/1A/1B/2/2B. Then, this paper designs and implements the uplink receiver of physical layer control channel based on floating-point C model. The algorithm of floating-point model is implemented in the software environment based on VC and Matlab. The main modules include de-SC-FDMA symbol, channel estimation, filtering de-noising, channel equalization, fast Fourier transform, de-orthogonal amplitude modulation, sub-carrier average and symbol average. This paper also explains the function interface design of each module, compares the floating-point C model with the standard instrument data, draws the performance curve of each format receiving model of the physical layer control channel, and makes the analysis. It is proved that the performance of the C model is in accordance with the protocol. Finally, according to the characteristics of software and hardware of Maotu DSP developed by Chinese Academy of Sciences, the design scheme of floating-point C model is realized and optimized. The main techniques include the fixed-point of floating point, including the whole fixed-point rule and the fixed-point design of each module. There are also the use methods and optimization techniques of scalar instruction set and vector instruction set used by Maotu DSP in each module, and the program flow chart of each module is designed. Then the results of the DSP development process of this paper are shown, and the mean square error statistics of the floating point model is made, which proves the consistency with the floating point model, and thus proves that the fixed point model conforms to the protocol. The efficiency and throughput of the function in each module are analyzed and compared, and the performance analysis of the fixed-point model is completed. The innovation of this paper is that the base station receiver of TD-LTE physical layer control channel is designed and implemented based on Maotu DSP, developed by the Institute of Computing, Chinese Academy of Sciences. It is also the first time that Maotu DSP has been applied to the design of TD-LTE physical layer control channel. It can be used as a reference for the other design of Maotu DSP and the design and application of baseband chip.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5
本文編號：2441466
[Abstract]:With the wide demand of wireless communication, LTE technology has been put into our daily life. At the same time, the three operators introduce TD-LTE service, which has the advantages of high bandwidth, high speed and good stability, which makes it a trend in the future. In China, as a new technology, TD-LTE home base station has great development space and practical application value because of its simple installation, stable performance and low power consumption, in which the complete independent research and development of baseband chip is imperative. As an indispensable part of the uplink control channel in the physical layer of the baseband chip, the transmission quality of the channel is determined by many important factors, and the performance of each part of the base station is also determined. Under this background, the full-link design and implementation of the physical control channel of TD-LTE uplink receiver based on Maotu DSP is completed in this paper. Firstly, this paper introduces the basic concept and protocol flow of TD-LTE and physical layer control channel. This paper mainly introduces the development process, present situation and future trend of LTE, and briefly explains the key technology of TD-LTE, and briefly introduces the development of home base station at home and abroad, and then introduces the basic knowledge of TD-LTE physical layer protocol. This paper includes the frame structure of physical layer and the meaning of basic parameters of physical layer, and briefly introduces the design flow of transmitter of physical layer control channel format 1/1A/1B/2/2B. Then, this paper designs and implements the uplink receiver of physical layer control channel based on floating-point C model. The algorithm of floating-point model is implemented in the software environment based on VC and Matlab. The main modules include de-SC-FDMA symbol, channel estimation, filtering de-noising, channel equalization, fast Fourier transform, de-orthogonal amplitude modulation, sub-carrier average and symbol average. This paper also explains the function interface design of each module, compares the floating-point C model with the standard instrument data, draws the performance curve of each format receiving model of the physical layer control channel, and makes the analysis. It is proved that the performance of the C model is in accordance with the protocol. Finally, according to the characteristics of software and hardware of Maotu DSP developed by Chinese Academy of Sciences, the design scheme of floating-point C model is realized and optimized. The main techniques include the fixed-point of floating point, including the whole fixed-point rule and the fixed-point design of each module. There are also the use methods and optimization techniques of scalar instruction set and vector instruction set used by Maotu DSP in each module, and the program flow chart of each module is designed. Then the results of the DSP development process of this paper are shown, and the mean square error statistics of the floating point model is made, which proves the consistency with the floating point model, and thus proves that the fixed point model conforms to the protocol. The efficiency and throughput of the function in each module are analyzed and compared, and the performance analysis of the fixed-point model is completed. The innovation of this paper is that the base station receiver of TD-LTE physical layer control channel is designed and implemented based on Maotu DSP, developed by the Institute of Computing, Chinese Academy of Sciences. It is also the first time that Maotu DSP has been applied to the design of TD-LTE physical layer control channel. It can be used as a reference for the other design of Maotu DSP and the design and application of baseband chip.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5
【參考文獻(xiàn)】
相關(guān)博士學(xué)位論文 前1條
1 楊君;專用指令集處理器（ASIP）體系結(jié)構(gòu)設(shè)計(jì)研究[D];中國科學(xué)技術(shù)大學(xué);2006年
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