The present invention discloses a method for inserting special reference signal in physical resource block, wherein the method comprises the following steps: generating a downlink sub-frame comprising two time slots; inserting two rows of special reference signals in the time domain in the data area of each time slot of downlink sub-frame; and executing wave beam forming procession to the downlink sub-frame. The invention also discloses a mobile communication transmitter. The solution of the invention can simultaneously support Nd=1 centralized transmission and Nd=2 frequency diversity transmission.