A MIMO Channel Estimation Algorithm Using Complete Complementary Sequence Pairs

We propose a multiple-input multiple-output (MIMO) channel estimation algorithm in this paper. A pilot scheme that uses complete complementary sequence pairs (CCS-Ps) with complete orthogonality (the sidelobes of the auto-correlation function and cross-correlation function equals zero for all time shifts) is investigated. We analyze the channel estimation performance under the normalized mean square error sense (NMSE). In contrast to the complementary pilot mode, CCS-Psbased channel estimation will acquire much more flexible configuration in selection of transmitter antenna number. Resulting from simulated data, the efficiency and validity of the CCS-Ps applied in MIMO channel estimation are proved.