WSEAS Transactions on Systems and Control
Print ISSN: 1991-8763, E-ISSN: 2224-2856
Volume 16, 2021
Precoding Aided Data Correlation Scheme for Channel Estimation Technique in MIMO-OFDM System
Authors: ,
Abstract: Channel estimation is considered as an important phase in Multiple Input Multiple Output –
Orthogonal Frequency Division Multiplexing (MIMO-OFDM) networks which can enhances the
performance significantly. Channel estimation widely classified as pilot based, blind and semi-blind
channel estimation. The pilot-based channel estimation decreases the data transmission rate and spectral
efficiency. To overcome these issues of existing schemes, we present a novel blind channel estimation
technique. According to proposed scheme, we transmit the data in a block-wise manner. The proposed
scheme uses precoding technique to establish the correlation between these blocks. Further, we use
channel correlation to solve the diagonal uncertainty of correlation matrix which helps to improve the
system performance. We present a comparative analysis study which shows that proposed approach can
achieve better performance in terms of Normalized Mean Square Error (NMSE) and Mean Square Error
(MSE) when compared with existing techniques
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Keywords: Systems Theory, Multiple Input Multiple Output – Orthogonal Frequency Division
Multiplexing (MIMO-OFDM), Normalized Mean Square Error, Systems Engineering
Pages: 146-154
DOI: 10.37394/23203.2021.16.11