基于NGB-W系统的时频同步处理模块的FPGA实现
发布时间：2019-01-01 19:18
【摘要】：同步技术是调整通信网中的各种信号使之协同工作的技术。所有信号协同工作是通信网正常传输信息的基础。同步技术是OFDM中的一项关键技术和难点技术。但由于无线信道的随机性，传统方法在门限设定上无法兼顾判断准确性和计算复杂度两方面性能。在此基础上,分析了同步技术的时域和频域两方面，详细阐述了时域和频域两方面的关键算法和详细的硬件实现方案以及代码仿真。 随着Internet商业化所带动的视频、音频以及数字通信的发展，人们对无线通信寄予了更高的期望，下一代无线通信系统面临着越来越严峻的挑战。解决大量用户的大容量通信需求和有限的频谱资源供给之间的矛盾,以正交频分复用(Orthogonal Frequency DivisionMultiplexing,OFDM)技术为代表的技术得到了学术界和工业界的关注和研究,并被广泛接受为下一代无线通信系统的首选架构。 NGB-W是英文Next Generation Broadcasting wireless network的缩略语简称，意为下一代无线广播电视网。NGB-W以有线电视网数字化整体转换和移动多媒体广播电视（CMMB）的成果为基础，以自主创新的高性能宽带信息网核心技术为支撑，，构建的适合我国国情的、三网融合的、有线无线相结合的、全程全网的下一代广播电视网络。NGB-W是以自主知识产权技术标准为核心的、可同时传输数字和模拟信号的、具备双向交互、组播、推送播存和广播四种工作模式的、可管可控可信的、全程全网的宽带交互式下一代无线广播电视网络。 本论文以NGB-W无线通信系统中的时间、频率同步硬件FPGA实现问题做为主要研究对象，详细的描述了算法以及硬件实现方案，以及硬件实现的仿真。
[Abstract]:Synchronization technology is the technology that adjusts the various signals in the communication network to make it work together. The cooperative work of all signals is the basis for normal transmission of information in communication networks. Synchronization is a key and difficult technique in OFDM. However, due to the randomness of wireless channel, the traditional method can not meet the performance of accuracy and computational complexity in threshold setting. On this basis, the time domain and frequency domain of synchronization technology are analyzed, and the key algorithms, hardware implementation scheme and code simulation in time domain and frequency domain are described in detail. With the development of video, audio and digital communication driven by the commercialization of Internet, people place higher expectations on wireless communication, and the next generation wireless communication system is facing more and more serious challenges. To solve the contradiction between the large capacity communication demand of a large number of users and the limited supply of spectrum resources, the technology represented by orthogonal Frequency Division Multiplexing (Orthogonal Frequency DivisionMultiplexing,OFDM) technology has been paid attention to and studied by academia and industry. And is widely accepted as the next-generation wireless communication system preferred architecture. NGB-W is the acronym of English Next Generation Broadcasting wireless network, which means the next generation of radio and television network. NGB-W is based on the digital conversion of cable television network and the achievement of mobile multimedia broadcast television (CMMB). Supported by the core technology of the independent innovation of the high performance broadband information network, it is suitable for the national conditions of our country, the three networks are integrated, and the wired and wireless networks are combined. The next generation broadcast television network of whole network. NGB-W is based on independent intellectual property technology standard, can transmit digital and analog signal simultaneously, has four working modes of two-way interaction, multicast, push broadcast and broadcast. Can manage controllable credible, whole-range wide-band interactive next-generation radio and television network. In this paper, the time and frequency synchronization hardware FPGA implementation in NGB-W wireless communication system is taken as the main research object. The algorithm, hardware implementation scheme and hardware implementation simulation are described in detail.
【学位授予单位】：南昌航空大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN919.34
本文编号：2398001
[Abstract]:Synchronization technology is the technology that adjusts the various signals in the communication network to make it work together. The cooperative work of all signals is the basis for normal transmission of information in communication networks. Synchronization is a key and difficult technique in OFDM. However, due to the randomness of wireless channel, the traditional method can not meet the performance of accuracy and computational complexity in threshold setting. On this basis, the time domain and frequency domain of synchronization technology are analyzed, and the key algorithms, hardware implementation scheme and code simulation in time domain and frequency domain are described in detail. With the development of video, audio and digital communication driven by the commercialization of Internet, people place higher expectations on wireless communication, and the next generation wireless communication system is facing more and more serious challenges. To solve the contradiction between the large capacity communication demand of a large number of users and the limited supply of spectrum resources, the technology represented by orthogonal Frequency Division Multiplexing (Orthogonal Frequency DivisionMultiplexing,OFDM) technology has been paid attention to and studied by academia and industry. And is widely accepted as the next-generation wireless communication system preferred architecture. NGB-W is the acronym of English Next Generation Broadcasting wireless network, which means the next generation of radio and television network. NGB-W is based on the digital conversion of cable television network and the achievement of mobile multimedia broadcast television (CMMB). Supported by the core technology of the independent innovation of the high performance broadband information network, it is suitable for the national conditions of our country, the three networks are integrated, and the wired and wireless networks are combined. The next generation broadcast television network of whole network. NGB-W is based on independent intellectual property technology standard, can transmit digital and analog signal simultaneously, has four working modes of two-way interaction, multicast, push broadcast and broadcast. Can manage controllable credible, whole-range wide-band interactive next-generation radio and television network. In this paper, the time and frequency synchronization hardware FPGA implementation in NGB-W wireless communication system is taken as the main research object. The algorithm, hardware implementation scheme and hardware implementation simulation are described in detail.
【学位授予单位】：南昌航空大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN919.34
【参考文献】
相关博士学位论文 前1条
1 张宇;MIMO-OFDM系统信道估计与同步技术的研究[D];哈尔滨工业大学;2010年
本文编号：2398001
本文链接：https://www.wllwen.com/falvlunwen/zhishichanquanfa/2398001.html
