Analysis of frequency and channel estimator for down link of MIMO OFDM system

The analysis should be done based on MATLAB codes, which includes parameters like SNR, SINR.

The issues of frequency offset and channel estimation are considered for the downlink of coordinated multiple input
multiple-output orthogonal frequency-division multiplexing systems. Multiple carrier frequency offsets exist in this coordinated system. Without implementing an appropriate compensation for these offsets, both inter-carrier and inter-cell interferenc will degrade the system performance. Here, we should adopt a parallel interference cancelation strategy to iteratively mitigate intercell interference, and propose a frequency offset estimator,approximated by a Hadamard product and a Taylor series
expansion, to eliminate the inter-carrier interference. The scheme is significantly less complex than existing methods. Furthermore, the channel estimator is robust to frequency offsets and performs comparably well to these conventional approaches.