Patent ID: 7613244

Claim:
An apparatus for receiving channel quality information (CQI) by a base station in a communication system, the apparatus comprising: a transmitter transmitting a CQI channel allocation information and a CQI modulation information to a mobile station (MS); a receiver receiving a CQI channel signal from the MS on a CQI channel, the CQI channel being allocated to the MS and the CQI channel signal indicating CQI as measured by the MS; and a channel receiver demodulating the CQI based on (i) a correlation performed on the CQI channel signal and (ii) the CQI modulation information; wherein the CQI modulation information includes information indicating an allocated modulation vector sequence set among allocable modulation vector sequence sets, each of the allocable modulation vector sequence sets includes modulation vector sequences, each of the modulation vector sequences includes modulation vectors, and information as to an offset to be applied to the allocated modulation vector sequence set; wherein the channel receiver demodulates the CQI based on the offset.