FMT-TDMA衛(wèi)星通信體制關(guān)鍵技術(shù)研究
[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.
【學(xué)位授予單位】:西安電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN927.2
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