A Method for Improved MC-CDMA Pre-equalization with Imperfect Channel Estimation
Wei Liu · Communications technology · 2008
In this paper,the reason of MC-CDMA downlink transmission with MMSE pre-equalization under imperfect channel parameter estimation environment is analyzed.A method for improved downlink MMSE pre-equalization with impefect channel estimation is also presented.As compared with the conventional MMSE pre-equalization,the improved method can efficiently reduce the effect of channel estimation error on the performance of MC-CDMA downlink transmission.The results indicate that the improved MMSE pre-equalization can overcome the abnormal effect of bit-error rate increasement with signal-to-noise ratio raising.