Mechanisms for feedback of channel quality information (CQI) in a multi-carrier environment are disclosed. A mobile station may include one or more antennas, and a transceiver coupled to the one or more antennas. The transceiver may be configured to receive (e.g., simultaneously) signals on a plurality of carriers. Each of the carriers may include synchronization channels. The transceiver may be further configured to, for each of one or more of the carriers: generate channel quality information (CQI) for the carrier based on pilot signals in the carrier; transmit the CQI for the carrier. The one or more carriers for which CQI is generated and transmitted may be determined by configuration information received from a base station.