Patent ID: 8634351

Claim:
An LTE compliant Orthogonal Frequency Division Multiplex (OFMD) baseband receiver, comprising: a cell searcher operative to search primary and secondary search symbols that are multiplexed into an OFDM signal, and, once connected to a base station, to search other base station's signals; a guard interval remover; FFT means operative to transform a vector of received samples from time domain into frequency domain; a channel estimator operative to estimate a transfer function of a transmission channel; an equalizer operative for equalizing OFDM subcarriers and estimating transmitted symbols; an interference estimator; a soft-metric calculator operative to demap estimated transmit symbols output by the equalizer into soft bits; and a forward error correcting (FEC) decoder operative to estimate a transmitted bit sequence from the soft bits; wherein said interference estimator comprises a frequency selective interference estimator; and the receiver further comprises: an interference level averager; and an interference assessor operative to control which output of said frequency selective interference estimator or said interference level averager is to be supplied to said soft-metric calculator.