Patent ID: 8457258

Claim:
A method for minimizing mean square estimation error (MSEE) and bit error rate jointly during channel estimation and equalization between a transmitter and a receiver of an orthogonal frequency division multiplexing (OFDM) system, said method comprising steps of: transmitting from said transmitter to said receiver a training sequence for channel estimation being superimposed onto the input data at specific pilot to data power ratio (PDPR); receiving the OFDM signals as an input, wherein said signal simultaneously contains training sequence and data signals at said receiver; cross-correlating said received signal up to a specific lag determined by the rms delay spread of the channel, with a specific known training sequence stored in a register, and which is also the sequence that is added to the data at the transmitter in the time domain having a prescribed pilot to data power ratio, wherein the said cross-correlated data being processed over a length of samples depending on the coherence time of the channel and processed along with the stored values of the inverse of autocorrelation values of superimposed training (ST) sequence so as to obtain a reliable least squares (LS) based channel estimate.