FIELD: demodulating backward channel in communication system with mobile equipment. SUBSTANCE: when at least one mobile station supports connection with transceiving base station and system is searching for optimal way of plurality of ways affording best quality of reception, then best alternative method for implementing this invention in mobile communication system supporting variable-speed data transmission includes phase of searching for plurality of ways according to sequential search algorithm and avoiding ineffective demodulation during variable-speed data transmission. EFFECT: enhanced reliability of backward channel demodulation. 22 cl, 2 dwg
