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Time domain interleave for mitigating impulsive noise in aeronautical OFDM systems

机译:用于减轻航空禁止脉冲的时域交织系统

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In order to decrease the inter-carrier interference (ICI) caused by the Pulse Blanking (PB), which is considered as an efficient method to combat impulsive interference, a Time Domain Interleaving upgraded PB (TDI-PB) is investigated for future aeronautical Orthogonal Frequency Division Multiplexing (OFDM) systems. The proposed TDI-PB focuses on the desired signals blanked with impulsive interference simultaneously. When all contaminated samples are blanked by PB, those useful signals also blanked by PB could be reconstructed by a linear interpolation. Since continuous blanked samples caused by PB will degrade interpolation seriously, to this end time domain interleave has to be deployed in TDI-PB mechanism. Analytical and simulation results illustrate that the proposed mechanism could effectively combat impulsive noise with negligible ICI and low computational complexity comparing to the original PB scheme.
机译:为了减少由脉冲消隐(PB)引起的载波间干扰(ICI),该干扰被认为是打击脉冲干扰的有效方法,研究了将来的航空正交的时间域交织升级的PB(TDI-PB)频分复用(OFDM)系统。所提出的TDI-PB专注于在脉冲干扰的所需信号上同时消隐。当所有受污染的样本被PB消隐时,也可以通过线性插值来重建由PB消隐的那些有用的信号。由于由PB引起的连续消隐样本将严重降低插值,因此必须在TDI-PB机制中部署该端时域交织。分析和仿真结果表明,与原始PB方案相比,所提出的机制可以有效地打击脉冲噪声和低计算复杂性。

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