So it is necessary to study the channel estimation method of MIMO-OFDM systems.

因此，有必要对MIMO - OFDM系统的无线信道估计方法进行研究。

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Capacity of the MIMO-OFDM systems using both space diversity and polarization diversity was analyzed.

结合空间分集和极化分集，对MIMO - OFDM系统中的容量进行研究。

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This dissertation investigates the topic of time and frequency synchronization for OFDM and MIMO-OFDM systems.

准确的时间同步和精确的频率同步是OFDM系统和MIMO OFDM系统正常工作的前提。

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