Apparatus and method for transmitting/receiving channel quality information in a communication system using orthogonal frequency division multiple access scheme

The present invention uses partition the entire frequency band into a plurality of sub-carrier bands and comprises a sub-channel set of tiles to advance occupy sub-carrier bands of the set number are for a time period previously set, the base station is a plurality of receive antennas in an orthogonal frequency division multiple access communication system, the base station received the mobile subscriber station in consideration of the number of antennas, the channel quality information (CQI: channel quality information) to the sub-channel of the CQI channel, and the mobile subscriber station to send the When assigning the modulation information for modulation by the CQI channel signal the CQI transmitted by the mobile subscriber station and, after a signal is received on the CQI channel, and a radio frequency processing on the received signal a Fast Fourier transform, the in correlation to the corresponding fast Fourier transform on the modulation signal and demodulates the CQI information of the mobile subscriber station. Receiving antennas, modulation vector sequence set, CQI channel modulation vector, CQI reception performance