全雙工(FD)無線通信已被視為第五代無線通信系統(tǒng)的關(guān)鍵技術(shù)之一。它使得兩個節(jié)點(diǎn)能夠在相同的時間和頻率資源上進(jìn)行雙向通信,在提高容量和頻譜效率以及增加吞吐量方面具有極大潛力,因此獲得了工業(yè)和學(xué)術(shù)界的很多關(guān)注。作為電磁波的一個重要屬性,基于極化的全雙工通信能夠逼近信道容量成倍增長的理論極限而獲得了很多關(guān)注。在單個信道中同一時間相同頻率的傳輸和接收性能受限于自干擾,即接收方從自身傳輸器中接收了大量的干擾信號。由于收發(fā)器之間存在線性和非線性損傷等因素,如何消除自干擾成為全雙工通信的關(guān)鍵問題。本論文分析了全雙工通信的限制因素,并給出了兩種自干擾消除方案以實(shí)現(xiàn)更好的性能。本論文選題于國家自然科學(xué)基金項(xiàng)目(61501050和61271177),主要工作如下:1)首先綜述了全雙工通信技術(shù),著重強(qiáng)調(diào)了其在實(shí)現(xiàn)過程中的限制因素和問題。然后詳細(xì)闡述了已有的自干擾消除技術(shù),包括被動、模擬和數(shù)字消除技術(shù)。此外,為了研究基于極化的全雙工通信,重點(diǎn)討論了極化信號處理相關(guān)理論及性質(zhì)。2)通過設(shè)置天線的定向隔離和交叉極化等參數(shù),對基于極化的天線自干擾消除進(jìn)行了性能分析。在搭建的極化全雙工通信平臺上,設(shè)計(jì)了定向隔離和交叉...

【文章頁數(shù)】：68 頁

【學(xué)位級別】：碩士

【文章目錄】：
Abstract
摘要
Chapter 1: Introduction
    1.0 Background and Significance of the Study
    1.1 Research Status
    1.2 Major Contributions of This Work
        1.2.1 Polarization Based Antenna SI Cancellation Scheme
        1.2.2 Polarization Based Digital SI Cancellation Scheme
    1.3 Structure and Content Arrangement
Chapter 2: Survey of SI Cancellation Techniques in FD
    2.1 Overview of FD Wireless Communication System
    2.2 SI Cancellation Techniques
        2.2.1 Passive SI Cancellation
        2.2.2 Analog SI Cancellation
        2.2.3 Digital SI Cancelation
    2.3 Polarization Signal Processing
        2.3.1 Polarization Direction
        2.3.2 Properties of Polarization
    2.4 Chapter Summary
Chapter 3: Polarization Based Antenna SI Cancellation
    3.1 Introduction
    3.2 Architecture of FD Platform for Antenna SI Cancellation
    3.3 Experimental Design for Polarization Based Antenna SI Cancellation
        3.3.1 Directional Isolation Configurations and Parameters
        3.3.2 Parameters for Changing Polarization State
    3.4 Experiment Results and Performance Analysis
    3.5 Chapter Summary
Chapter 4: Polarization Based Digital SI Cancellation
    4.1 Introduction
    4.2 System Description and Signal Model
    4.3 Proposed POD Scheme for Digital SI Cancellation
        4.3.1 Orthonormal Basis functions and Values of Y, y and Z
        4.3.2 Derivation of SNR and SIR
    4.4 Performance Analysis and Simulation Results
        4.4.1 Receiver Detection Performance and Simulation Results
        4.4.2 Cancellation Performance of POD Scheme and Simulation Results
    4.5 Chapter Summary
Chapter 5: Conclusion and Future Work
    5.1 Polarization Based Antenna SI Cancellation Scheme
    5.2 Polarization Based Digital SI Cancellation Scheme
    5.3 Future Work
References
Acknowledgement
List of Publication Submitted During the Study



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