Improved Pilot-Aided channel estimation in LTE uplink

Channel Estimation (CE) is one of the key technologies in mobile communication system and also important in Sounding Reference Signal (SRS) that is used to detected channel quality information in LTE uplink. According to the latest LTE specification, the pilot aided CE algorithms for LTE uplink are researched in this paper. To improve the performance and decrease the complexity of traditional channel estimation methods, here we propose a novel Pilot-Aided channel estimation algorithm - Conjugate Cancel (CC) channel estimation, after LS, MMSE and SRS are introduced. The goal of the method is to reduce the computational complexity and restrain the interference of noise. Stimulation shows that the improved method is prior to the traditional algorithms respectively while achieving the purpose of Channel Estimation.