Evaluation of the Channel State Information Effect to MIMO-OFDM System Performance

The researches about conditions of the resource allocation algorithm in wireless communication have been done a lot recently. An evaluation model for the adaptive algorithm of MIMO-OFDM system is built in this paper. After formulating system efficiency under static and adaptive conditions, the effect of imperfect channel state information (CSI) to MIMO-OFDM system is analyzed. Analytical and numerical results show effect to the frequency efficiency when the CSI is imperfect, and simulations show that MIMO-OFDM can resist the channel delay. At last we propose the compensatory policy for channel delay and channel estimation error.