Method for the blind estimation of ofdm signal parameters through adaptive covariance

摘要

The method involves combining consecutive samples according to a tested value of a modulation parameter of an orthogonal frequency division multiplex (OFDM) signal to form vectors. The covariance matrix of the vectors is estimated. The covariance matrix theory is calculated using the signal whose modulation parameter value has the tested value. The distance between the matrix and the theory is measured. The combining, estimating, calculating and measuring steps are repeatedly performed to estimate the parameter value that is the shortest distance measured between the matrix and the theory.