Patent ID: 8774310

Claim:
A method of reducing the transmission overhead, the method comprising: transmitting signals precoded using a plurality of precoders on a plurality of subbands, each of the signals precoded by one of the precoders and transmitted on one of the subbands; storing, for each of the precoders, a subband and a subframe that each of the precoders were used to form stored subband and subframe information; receiving a set of channel quality indicators (CQIs); identifying a set of the precoders that correspond to the received CQIs, respectively, based on the stored subband and subframe information, wherein identifying the set of precoders comprises identifying a precoder in the precoders that corresponds to a CQI in the received CQIs based on the subband and the subframe the precoder was used, to form an identification; determining one or more of the precoders that are usable for communication based upon the received CQIs and the set of the precoders that correspond to the received CQIs; and scheduling the precoder for use in a data transmission to a receiver in a device having sent the CQI based on the identification.