level estimates which may generally be different in time and frequency direction these noise level estimates are used to obtain noise normalization values at 450 which are applied to both received data symbols at 452 and to the computed channel estimates at 454 normalized channel estimation data from 454 are fed into the time offset estimator 430 and the frequency offset estimator 432 for determining time and frequency offset estimates respectively that are used for time and frequency tracking loops between the digital baseband receiver 400 and the analog rf front end of an ofdm receiver arrangement as shown at 40 normalized channel estimation data from 454 are also fed into the feedback information estimation unit 440 fig5 illustrates one embodiment of feedback information estimator 440 which is implemented by three hardware blocks namely a de precoding block 51 a post equalization sinr block 52 and a mutual information block 53 respectively and a software block 54 for calculating channel state information csi from the averaged mutual information obtained in block 53 it has to be understood however that this particular implementation of hardware and software blocks is merely illustrative and other combinations of hardware and software blocks that perform the inventive csi estimating method are within the scope of the invention the operation of the feedback information estimation unit 440 will be understood in conjunction with the flow chart of the method steps performed according to the invention as shown in fig6 which is described below the frequency selective interference noise covariance matrix is estimated on a resource block rb basis at 61 the reciprocal cholesky decomposition of the estimated interference is used to weight the channel matrix wherein the normalization matrix u00f1 is related to.