Method for allocation of adaptive subchannel and bits using partial channel feedback in orthogonal frequency division multiplexing access communication system

The present invention relates to the entire frequency band in a plurality of sub-carriers divided into a band and adaptation in a wireless communication system including a set of sub-channels of adjacent sub-carrier band for the number of the preset subchannel and bit allocation method, the sub- channels are a particular present in the boundary of the diversity sub-channel, high-speed, high-capacity been classified as AMC sub-channel for data transmission, the base station of each area constituting the communication system for acquiring a frequency diversity gain. the mobile terminal determine the channel quality information of each sub-channel at regular intervals, and to determine the index of the decision criterion is a maximum to a predetermined feedback band based on the channel quality information, and feeds back the index of the determined feedback band to the base station and wherein the base station the feedback information from the mobile terminal Using the information generates the band allocation information, and, and transmits to the mobile terminal the mobile terminal, and transmitting a pilot for adaptive modulation and coding by using the band allocation information received from the base station to the base station, the base station estimating a channel using the received pilot, and allocating bits to the band allocated by the band allocation information using the channel estimation result. OFDMA, channel quality information (CQI), the feedback band (band)