一种LTE系统中自适应时频同步方法An Adaptive Scheme for Time and Frequency Synchronization in LTE Systems
李卓;张棠棣;王财香;
摘要(Abstract):
OFDM技术作为LTE系统的核心技术,在LTE系统的下行链路中使用。能够满足LTE频谱灵活性的要求,可以实现高的峰值速率。但是OFDM系统对频率偏移非常敏感,频率偏移会引起载波间干扰(ICI),导致OFDM系统的性能大幅下降。因此本文提出了一种针对LTE系统的自适应时频同步方法。该方法利用自适应技术,实现对频偏的跟踪。仿真结果表明,该方法可以有效的实现时频同步。
关键词(KeyWords): 正交频分复用;LTE;同步;载波频偏
基金项目(Foundation): 国家科技重大专项(2009ZX03002-009)资助课题
作者(Author): 李卓;张棠棣;王财香;
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DOI:
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