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导频设计和信道估计是OFDM系统中重要的研究课题。本文主要介绍了TD-SCDMA在LTE长期演进中的导频设计原则和方案,分别对下行、上行导频的频域和时域结构进行了仿真分析。并对LS和简化的MMSE算法的性能进行了仿真比较和分析。
Pilot design and channel estimation are important research topics in OFDM systems. This paper mainly introduces the pilot design principles and schemes of TD-SCDMA in long-term evolution of LTE. The frequency and time-domain structures of downlink and uplink pilots are simulated respectively. The performances of LS and simplified MMSE algorithm are compared and analyzed.