Abstract: The reference signal plays an important role in LTE（Long Term Evolution）, which is mainly used to extract information for channel estimation, equalization and etc.. According to the LTE physical layer protocol specification, the paper presents the design flow chart of the generation of the demodulation reference signal with the field programmable gate array (FPGA) design techniques by using the FPGA chip of ALTERA-s Cyclone III series. Simulation results show that the FPGAbased demodulation reference signal generation program can achieve the requirements of LTErelated specifications.

Key words: long term evolution； physical uplink control channel； demodulation reference signal； FPGA implementation