XIE Yu-tang, YAO Yao. Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design[J]. Acta Electronica Sinica, 2006, 34(1): 110-113.
XIE Yu-tang, YAO Yao. Carrier Frequency Offset Estimation in MIMO-OFDM Systems Based on Pilots Design[J]. Acta Electronica Sinica, 2006, 34(1): 110-113.DOI:
The problems of carrier synchronization in MIMO-OFDM communications system are investigated in the paper.Based on a general model where multiple frequency offsets exist between transmit and receive antennas
a special pilot allocation scheme-sub-band method for the estimation of multiple different frequency offsets is proposed to convert the problem of multiple frequency offsets estimation into a set of single frequency offset estimation problems
which can reduce the complexity.Meanwhile this method is effective in suppressing the inter-carrier interference (ICI) and multi-antenna interference (MAI) and therefore improves the estimation performance.