Channel Estimation Techniques for MIMO-OFDM Systems Using Pilot Carries on Multipath Channels

A multiple-input multiple-output (MIMO) communication system combined with the orthogonal frequency division multiplexing (OFDM) modulation technique can achieve reliable high data rate transmission over broadband wireless channels. Channel state information for both single-input single-output (SISO) and MIMO systems based on pilot aided arrangement is investigated in this paper. According to this, with investigating the channel estimation method, we will design optimum training courses for these systems. First of all, pilots were inserted among subcarriers in transmitter with distances emerged of sampling theory. In this paper are evaluated Channel Estimation Techniques for MIMO-OFDM Systems.

Keywords:

Multiple Input Multiple Output Systems (MIMO) , LS , MMSE , LMS , RLS , EM