Patent ID: 7573965

Claim:
A receiver, comprising: an OFDM demodulator; a channel corrector connected downstream of the OFDM demodulator; and a channel estimator connected downstream in the OFDM demodulator and to the channel corrector to generate output to the channel corrector; wherein the channel estimator comprises a scalar Kalman filter that determines a Least-Square estimated value, H s , at pilot subcarrier locations, s, according to a filter equation H s k =K gain S n [k], wherein H s , is received by the filter equation as an input, wherein a value of H s k is processed for each k th variable, wherein the filter equation processes a correction value, S n [k], according to a first equation S n [k]=S+K n ( H s −S ), wherein the equation filter processes a prediction for the correction value, S, according to a second equation S=K a S n [k], wherein filter equation processes a gain, K n , according to a third equation K n =P/ (1+ P ), wherein the filter equation processes a minimum MSE according to a fourth equation P n [k]=P (1− K n ), wherein the filter equation processes a prediction for a minimum MSE according to a fifth equation P=K a 2 P n [k]+K b ,and wherein K a , K b and K gain are constants.