FMT-TDMA卫星通信体制关键技术研究
发布时间：2018-08-30 18:04
【摘要】：在分析MF-TDMA体制特点的基础上,结合新的实现技术的发展,综合对滤波多音调制技术的研究,本文提出了一种优化的多频时分多址卫星通信体制FMT-TDMA。 结合实际需要,本文重点研究了FMT-TDMA卫星通信系统中FMT调制解调、系统组网、信道分配算法及再分配算法等关键技术,其中的主要工作包括： 论文首先概述了滤波多音调制技术及信道资源分配算法的研究现状,然后研究了滤波多音调制技术的原理及其有效实现方法,给出了FMT调制解调具体实现方案,并针对FMT系统子信道引入符号间干扰(ISI)的问题,对信道均衡技术进行了研究；此后基于FMT-TDMA卫星通信体制提出了构建卫星通信星状网、网状网方法,设计了不同组网形式下的帧结构；接下来论文介绍了信道分配算法的基本概念及分配策略,并对周期轮询分配算法及其改进算法进行了分析和仿真；最后介绍了二维信道资源分配中的时隙失配和再分配的基本概念,详细分析了典型再分配算法时隙冲突链法的原理和性能,在分析FMT-TDMA系统特点基础上,提出了优化的时隙分配算法,有效缩短了信道的分配时间。
[Abstract]:On the basis of analyzing the characteristics of MF-TDMA system, combining with the development of new realization technology and synthesizing the research of filtering multi-tone modulation technology, this paper proposes an optimized multi-frequency time-division multiple access satellite communication system FMT-TDMA.. Combined with the practical needs, this paper focuses on the key technologies of FMT modulation and demodulation, system networking, channel allocation algorithm and reassignment algorithm in FMT-TDMA satellite communication system. The main work is as follows: firstly, this paper summarizes the research status of filter multi-tone modulation technology and channel resource allocation algorithm, and then studies the principle of filtering multi-tone modulation technology and its effective implementation method. The realization scheme of FMT modulation and demodulation is given, and the channel equalization technology is studied to solve the problem of intersymbol interference (ISI) introduced into the subchannel of FMT system. Then, based on the FMT-TDMA satellite communication system, a satellite communication star network is proposed. Secondly, the basic concept of channel allocation algorithm and allocation strategy are introduced, and the periodic polling allocation algorithm and its improved algorithm are analyzed and simulated. Finally, the basic concepts of slot mismatch and reallocation in two-dimensional channel resource allocation are introduced, and the principle and performance of slot collision chain method of typical reallocation algorithm are analyzed in detail. Based on the analysis of the characteristics of FMT-TDMA system, the basic concepts of slot mismatch and redistribution are introduced. An optimized slot allocation algorithm is proposed, which effectively shortens the channel allocation time.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN927.2
本文编号：2213865
[Abstract]:On the basis of analyzing the characteristics of MF-TDMA system, combining with the development of new realization technology and synthesizing the research of filtering multi-tone modulation technology, this paper proposes an optimized multi-frequency time-division multiple access satellite communication system FMT-TDMA.. Combined with the practical needs, this paper focuses on the key technologies of FMT modulation and demodulation, system networking, channel allocation algorithm and reassignment algorithm in FMT-TDMA satellite communication system. The main work is as follows: firstly, this paper summarizes the research status of filter multi-tone modulation technology and channel resource allocation algorithm, and then studies the principle of filtering multi-tone modulation technology and its effective implementation method. The realization scheme of FMT modulation and demodulation is given, and the channel equalization technology is studied to solve the problem of intersymbol interference (ISI) introduced into the subchannel of FMT system. Then, based on the FMT-TDMA satellite communication system, a satellite communication star network is proposed. Secondly, the basic concept of channel allocation algorithm and allocation strategy are introduced, and the periodic polling allocation algorithm and its improved algorithm are analyzed and simulated. Finally, the basic concepts of slot mismatch and reallocation in two-dimensional channel resource allocation are introduced, and the principle and performance of slot collision chain method of typical reallocation algorithm are analyzed in detail. Based on the analysis of the characteristics of FMT-TDMA system, the basic concepts of slot mismatch and redistribution are introduced. An optimized slot allocation algorithm is proposed, which effectively shortens the channel allocation time.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN927.2
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