Performance analysis of a combined STC-SVD MIMO-OFDM system

Multiple-Input Multiple-Output (MIMO) systems using orthogonal frequency-division multiplexing (OFDM) technique provide promising features for the next generation communication systems. MIMO-OFDM systems can be enhanced using Space-Time Coding (STC). In this paper we introduce a combined Alamouti Space Time Block Coding/Repetition coding (STBC/STRC) with Singular Value Decomposition (SVD) system for future generation WLANs. The introduced system improves the Symbol Error Rate (SER) performance of MIMO-OFDM systems. Two schemes are applied on a (2×2) MIMO-OFDM antenna configuration. MATLAB® simulations show that the proposed system performed better over its standalone Alamouti-STC and SVD counterparts. Moreover, it is shown that better performance is not associated with a significant increase in the computational complexity of the algorithm, especially in the STRC-SVD case.