Robust Channel Estimation Based on MEP (IMAGE) Science China Press Caption Figure2 NMSE versus SNR for the EMEP and several methods with case 2. Credit ©Science China Press Usage Restrictions Use with credit. License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.