Communication system and method for increasing communication efficiency

摘要: A mobile communication system capable of increasing efficiency and a method therefor are provided, including receiver for grouping n MCS levels (where n>0) into continuous m n>m>0) according to the quality data channel transmitting an information signal, sending on group using pilot ACK or NACK which indicates whether signal is completely received; transmitter storing levels, extracting transmitted from receiver, determining one extracted as initial level, modulating coding be level result changing current in response signal.