The offset of carrier frequency can cause interference between subchannels in a multicarrier system.
对于多载波系统，载波频率的偏移会导致子信道之间产生干扰。
In this paper, we prove that oversampling the output of IIR channels can be transformed into a single input multiple output (SIMO) model, and the subchannels have the same AR coefficients.
本文证明了对IIR信道输出进行过采样(采样率是输入码率的整数倍)可以转化成单输入多输出的多信道模型，并且不同的信道有相同的AR系数。
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。
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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