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Synchronization errors in time and frequency occur in OFDM, OFDMA leading to interferences that complicate data detection at the receiver. The trilinear data model for MIMO-OFDMA for any arbitrary carrier assignment scheme is formulated. We propose to accomplish user's separation at the BS using estimates of the multiple CFOs and then use PARAFAC-TALS for blind estimation of user's parameters. We...
Multiple-input multiple-output (MIMO) wireless communication systems rely upon the knowledge of channel state information (CSI) at the receiver for data detection and decoding. In this paper, a better performance and reduced complexity channel estimation method is proposed for MIMO systems based on matrix factorization. This technique is applied on least squares (LS) channel estimation for performance...
A channel estimation approach yielding both channel gains and the number of multi-paths is presented. The algorithm is based on a variation of conditional model order estimation (CME), and is proposed for MIMO-OFDM systems. The CME based estimator is shown to be viable in both fixed and mobile broadband MIMO-OFDM wireless applications, and takes advantage of determining the nonzero taps as well. The...
This article researches the channel estimation algorithm based on multi-input multi-output & orthogonal frequency division multiplexing (MIMO-OFDM) system. It is mainly working on the research of channel estimation algorithm based on training sequence least square (LS) criterion. On the basis of introducing the LS time domain channel estimation algorithm, it brings about an improved LS time domain...
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