In a mobile environment, ICI is mainly caused by Doppler frequency shift. While, when combined with CDMA, Multiple Access Interference (mai) is another key factor affecting system performance.

在移动环境下，ICI的产生主要由多普勒频移引起，同时，与CD MA结合后，CD MA系统本身的多址干扰(MAI)也是影响系统性能的关键因素。

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The results shown that the MAI performance of NHZ quasi-synchronous system used NHZ sequences outperforms the asynchronous system employing random hopping frequency sequences.

研究结果表明，采用NHZ跳频序列的准同步跳频通信系统的MAI性能优于采用随机跳频序列的异步跳频通信系统。

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