APPARATUS FOR CONTROLLING CONTINUOUS OUTER POWER CONTROL LOOP IN DISCONTINUOUS TRANSMISSION MODE OF CODE DIVISION MULTIPLE ACCESS COMMUNICATION SYSTEM

摘要

PURPOSE: An apparatus for controlling a continuous outer power control loop is provided to control the outer power control loop regardless of data, by tabling frame error rates for signal-to-noise(SN) ratios, and by referring to the tabled frame error rates to decide whether frames have errors when the data is not transmitted in a discontinuous transmission mode of a code division multiple access(CDMA) communication system. CONSTITUTION: An apparatus for controlling a continuous outer power control loop comprises a cyclic redundancy check(CRC) error detector(925), a frame detector(924), a signal-to-noise ratio calculator(919), a data detector(927), and a frame error detector(929). If a frame is received, the CRC error detector checks an error of the frame to output a checked result. The frame detector measures energy of the frame to output the frame. The signal-to-noise ratio calculator calculates signal-to-noise ratios to output the ratios. The data detector receives the checked result and the frame energy to generate an existing frame flag message. The flag message presents whether a frame exists or not. If a frame received by the flag message exists, the frame error detector outputs the checked result to the outer power control loop. If the frame does not exist, the frame error detector estimates a frame error by the signal-to-noise ratios.