Research On Algorithm Of TDD-LTE Uplink Channel Estimation

With the development of the communication technology, the data communication is becoming the main trend in the mobile communication business. The long term evolution (LTE) technology promoted by 3GPP is brought in with this background. LTE is divided into TDD and FDD for the different duplexing.As the frequency resource is becoming deficient, TDD is becoming popular in the research institutes for its flexible in frequency resource configuration and high availability in frequency spectrum.Otherwise,channel estimation play an great role in the performance of link.Based on the research of TDD-LTE uplink channel estimation,the paper firstly analyses the physical protocol and theory of TDD-LTE and then gives a comprehensive introduction of channel estimation theory in the OFDM system. Secondly it gives the design of TDD-LTE uplink simulation platform according to the standard of LTE key technology and protocols.In the end,this paper research on denoising in frequence domain and transformed domain based on LS channel estiomation.On this basis,proposed a improvement algorithm.As verified by computer simulations, the proposed method based on the image separately gain about 1 and 0.3dB.