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This paper gives a summary of the principles, key techniques and state of the art of frequency synchronization in multi-input multi-output (MIMO) systems. The system model of frequency synchronization in MIMO systems is given and some assumptions are made first, and the principles and state of the art of the estimation and compensation of carrier frequency offsets (CFOs) are discussed for co-located...
This paper addresses the correction of multiple carrier frequency offsets (CFO) and detection in vertical Bell Labs layered space-time (V-BLAST) orthogonal frequency division multiplexing (OFDM) systems with distributed transmit antennas. We first propose a low-complexity CFO correction method suitable for low delay spread channels by exploiting the underlying characteristics of zero-forcing (ZF)...
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