3GPP LTE MIMO-OFDMA sistemlerde kanal kestirimi channel estimation for 3GPP LTE MIMO-OFDMA systems

摘要

Multiple Input Multiple Output — Orthogonal Frequency Division Multiplexing (MIMO-OFDM) systems would be able to reach high data rates in the 3rd Generation Partnership Project, Long Term Evolution (3GPP-LTE) standarts. Multiple Input Multiple Output-Orthogonal Frequency Division Multiple Access (OFDMA) scheme is used in the LTE downlink for it''s high spectral efficiency and some other superiorities. In this work, a low complex Minimum Mean Squared Error (MMSE) channel estimator for the LTE downlink MIMO-OFDMA structure is proposed. The recommended structure realizes the MMSE estimation of the Karhunen-Loéve (KL) series expansion coefficients of the spatially correlated channel parameters. The performance of the estimator is examined with the aim of the LTE Downlink 2×2 MIMO-OFDMA system simulation results.