摘要
多频时分多址(MF-TDMA)是一种基于频分和时分相结合的二维多址方式,在卫星通信灵活组网和支持综合业务传输方面具有明显的优势,适合不同规模卫星通信网络的应用。针对现代卫星通信领域中广泛采用的MF-TDMA信号,分析了信号的时频特征和载波特性,基于累积谱计算、频域搜索、时域能量窗检测等方法,提出了一套完整的MFTDMA信号检测算法,实现了MF-TDMA信号的多载波检测以及载波特性分析,并通过实际采集数据验证算法的正确性与可行性。
The Multiple Frequency and Time-Division Multiple Access （MF-TDMA） is a multiple access technology based on the combination of frequency-domain and time-domain. This technology has some special advantages in flexible networking and integrated service transmission in satellite communications, so it is suitable for different satellite communications. Aiming at the MF-TDMA signal used widely in current satellite communication domain, this paper analyzes the time-frequency characteristics and the carrier features of signal. An integrated MF-TDMA signal detection method is put forward based on cumulative spectrum calculation, search in frequency domain and detection of energy window in time domain. The muhicarrier detection and carrier features of MF-TDMA signal are ana- lyzed. The actual data proves the validity and feasibility of this method.
出处
《无线电工程》
2015年第9期77-80,共4页
Radio Engineering
