METHOD AND SYSTEM FOR REDUCING FEEDBACK INFORMATION IN MULTICARRIER-BASED COMMUNICATION SYSTEMS BASED ON TIERS

摘要

Systems and methods for decreasing the amount of information sent on a feedback channel are disclosed. A hierarchical tree structure may be used to reduce the amount of information sent on the feedback channel. Spectral binning may also be used in conjunction with the hierarchical tree structure. In one embodiment, a wireless communication apparatus operable in a communication system is provided. The wireless communication apparatus comprises a channel estimator module configured to indicate a state of a first channel condition for a first carrier frequency group using a first plurality of bits, the channel estimator module is further configured to indicate a state of a second channel condition for a second carrier frequency group using a second plurality of bits. Each of the first and second plurality of bits being equally arranged in a plurality of same bit positions between a most significant bit position and at least significant bit position. The apparatus also comprises a processor module configured to identify a bit position in at least one of the plurality of bit positions in which a bit value has changed to identify a c.