We consider receiver synchronization in the non-continguous orthogonal frequency division multiplexing (NC-OFDM)-based radio system in the presence of in-band interfering signal, which occupies the frequency-band between blocks of subcarriers (SCs) used by this system, i.e. in-band of NC-OFDM receiver spectrum range. This paper proposes a novel preamble-based synchronization algorithm for estimation of the time and frequency offset based on the received signal cross-correlation with the reference preamble. Contrary to the existing algorithms, it is robust against in-band interference including narrowband interference at the cost of increased complexity. Moreover, in the interference-free system, the probability of frame synchronization error is improved in comparison to all simulated algorithms.
翻译：我们认为,在以非连续或垂直频率分解为基点的无线电系统(NC-OFDM)上,在有带内干扰信号的情况下,接收器同步,该信号占据了该系统使用的次载体区块之间的频带,即NC-OFDM接收器频谱范围的波段。本文建议采用新的序言同步算法,根据收到的信号与参考序言的交叉关系,估计时间和频率的抵消。与现有的算法相反,它强烈反对带内干扰,包括以复杂性增加的代价进行窄带干扰。此外,在无干扰系统中,与所有模拟算法相比,框架同步错误的概率提高了。
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