The present document discloses an apparatus for receiving Physical Uplink Control Channel (PUCCH) in Long Term Evolution (LTE) system, comprising: blocks of system FFT performing system FFT on data from a plurality of antennas, blocks of PUCCH RB processing units receiving the allocated logic resource index table and the local base sequence and output of the blocks of system FFT, and generating DMRS despread outputs and data values; a block of SR detection for receiving the data values and the DMRS despread outputs, and for generating SR detection results; blocks of user data extraction receiving data values and DMRS despread outputs, and performing user data extraction; blocks of PUCCH user processing units receiving an orthogonal sequence index, the data values and an output from blocks of user extraction, and generating a ACK/NAK/CQI signal for a concerned UE.