Improved data-aided receiver for high-speed mobile environment

In order to ensure service quality of communication in high mobile speed, the improvement of receiver´s performance is of great importance. The paper takes high-speed communication as the researching background. Algorithms for equalizing intersymbol interference and Doppler Effect are studied for data-aided transmission. The inputs of equalization are improved by the mended derotation method. Take frequency deviation introduced by Doppler Effect and receiver itself into consideration, a cascade structure of frequency estimation and compensation for equalization algorithm is proposed. Simulation results show that the method promote the performance of the system well.