Wireless channel estimation is one of the challenging problems in multiple input multiple
output orthogonal frequency division multiplexing (MIMO-OFDM) wireless systems. The
MIMO-OFDM exploits the spatial resources and increases the reliability and capacity of
wireless systems. However, the performance of these systems depends on accurate channel
estimation since the receivers require perfect channel state information (CSI) for coherent
signal detection. Thus, wireless channel estimation is a necessary component of OFDM …

Channel estimation is an essential and crucial research problem in orthogonal frequency
division multiplexing (OFDM) based wireless communication systems. Several techniques
have been applied and investigated for wireless channel estimation but each of them has its
own limitations. The major drawback in current channel estimation techniques is that a large
pilot overhead is needed to yield a satisfactory performance which reduces the spectral
efficiency. To overcome this shortcoming, we suggest a method of data aided channel …