Research On Channel Estimation Technique In MIMO-OFDM System

As a combination of OFDM with space-time coding technique, MIMO-OFDM has recently received considerable attentions, which can not only effectively enhance the transmission rate and capacity of the wireless communication system but also effectively combat multi-path fading and interfere. In this paper, we discuss the principle of MIMO-OFDM system based on the introduction of fading channels. Furthermore, the channel estimation technique in MIMO-OFDM system is investigated, with the emphasis on training sequence-based and pilot-based channel estimation methods, and also several basic and improved algorithms are given respectively. Finally, the analysis and comparison of these algorithms is made by computer simulation.