An Improved Power Delay profile estimation Technique for MIMO-OFDM Systems with LMMSE Approach

Abstract

This project evaluate the performance of improved power delay profile estimation in Multiple input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems under linear minimum mean square error(LMMSE) channel. For smart applications, alone the pilot symbols of all transmit antenna ports area units are used in estimating the PDP. The distortions caused by null subcarriers and a short range of samples for PDP estimation is also considered. The proposed technique effectively minimizes the distortions for proper PDP estimation. Simulation results show that the performance of LMMSE channel estimation using the different PDP estimation techniques. The output of LMMSE channel by using the proposed PDP estimate approaches that of wiener filtering as results of the mitigation of distortion effects.