Data Aided Channel Estimation for MIMO-OFDM Wireless Systems Using Reliable Carriers

Wireless channel estimation is one of the challenging problems in Multiple Input Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) wireless systems. The MIMO-OFDM exploits spatial resources and increases reliability capacity However, performance these systems depends on accurate since receivers require perfect Channel State Information (CSI) for coherent signal detection. Thus, a necessary component OFDM In this article, we have proposed an algorithm that combines pilot symbols with reliable data estimation. serve as virtual pilots enhance spectral efficiency. Data Aided Estimation (DACE) eliminates requirement any additional such excessive number training to attain desired performance. Also, it outperforms traditional Least Square (LS) Linear Minimum Mean Error (LMMSE) methods terms (MSE) Bit Rate (BER) system.