Estimating doppler shift using predefined autocorrelation vectors

摘要

A method includes holding in a memory of a communication terminal multiple predefined vectors, each including signal autocorrelation values computed for a respective Doppler shift. A signal is received, and empirical autocorrelation values are calculated for the received signal. An actual Doppler shift of the received signal is estimated by selecting, from among the predefined vectors, a vector whose autocorrelation values best match the empirical autocorrelation values of the received signal.

主权项

1. A method, comprising:
in a communication terminal, holding in a memory multiple predefined vectors, each comprising signal autocorrelation values computed for a respective Doppler shift; receiving a signal, and calculating empirical autocorrelation values for the received signal; and estimating an actual Doppler shift of the received signal by selecting, from among the predefined vectors, a vector whose autocorrelation values best match the empirical autocorrelation values of the received signal.