International Journal of Computer Applications
In this paper, the authors present a combined approach to channel estimation for Multiple Input Multiple Output (MIMO) Orthogonal Frequency Division Multiplexing (OFDM). It uses both time domain and frequency domain information in the received signal to estimate the channel. Initial estimate of the channel is obtained using pilot assisted Least Square (LS) channel estimation. The estimate is further enhanced by extracting information through the received data symbols. A frequency domain approach is used to estimate the channel using pilots whereas time domain approach is used to enhance the estimate of the channel.