摘要
在对航空信道物理特性分析的基础上,提出了一个适用于空-空、地-空无线链路的宽带频率选择性衰落频域信道仿真器。选择合适的仿真参数,该仿真器可以模拟航空器在停场、滑行、飞行等状态的无线衰落信道。宽带频率选择性信道仿真器由多个并行子信道仿真器在频域构成,每个子信道为一个简单结构的平坦衰落模型,执行独立的瑞利衰落,这样的多个并行子信道构成了一个宽带频率选择性信道的仿真结构,非常适合正交频分复用或者多载波码分多址系统信道的计算机仿真。
This paper proposes a simulation structure for aeronautical wideband frequency - selective channel, which features ground - air and air - air wireless links. With appropriate channel parameters, the channel emulators of the parking, taxi and en - route states can be modeled in frequency domain. The wideband frequency - selective channel consists of some parallel sub - channels in frequency domain, which are assumed to be independent to each other and have Rayleigh - distributed envelopes. The sub- channel models and emulators are based on a simple structure and characterized by flat fading. Through such decomposition approach, a frequency domain frequency - selective channel model can he achieved, which is suitable for an implementation of orthogonal frequency - division multiplexing （OFDM） or multi - carrier code - division multi - access channel emulator.
出处
《空军工程大学学报（自然科学版）》
CSCD
北大核心
2006年第3期16-19,共4页
Journal of Air Force Engineering University(Natural Science Edition)
基金
教育部博士点基金资助项目(20050699037)
关键词
航空通信
频域信道模型
频率选择性信道
aeronautical communication
frequency domain channel model
frequency -selective channel
