The combination of MIMO and OFDM greatly increases the system capacity in the sense that OFDM and MIMO can respectively provide flat fading channel and spatial gain.
多天线和OFDM的结合极大地提高了系统容量，OFDM能为系统提供平坦衰落信道，而多天线则提供空间增益。
OFDM has the ability of transforming the frequency-selective channel into a collection of parallel flat-fading subchannels and therefore can be adopted in MIMO systems to combat multi-path effects.
OFDM技术可以把频率选择性衰落的信道转化成一组正交的平坦衰落的信道，因此可将OF DM技术应用在MIMO系统中来克服多径衰落的影响。
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