OFDM cannot overcome intersymbol interference in a multipath environment.
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Q15: Together,MIMO and OFDM technologies are the cornerstone
Q16: _ is used on the uplink channel
Q17: The IFFT operation has the effect of
Q18: Spread spectrum is an important form of
Q19: Spatial diversity can be used when transmitting
Q21: The relationship among the subcarriers in the
Q22: There are two applications of MU-MIMO: Uplink--Multiple
Q23: _ antenna architecture has become a key
Q24: One prominent advantage of _ over OFDMA
Q25: _ defines subchannels that can be allocated
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