Patent ID: 7298787
Filing Date: 2007-11-20
Classification: H04B,H04L

Abstract:
1. A method for facilitating broadband multi-carrier wireless transmission, the method comprising: dividing a plurality of transmit antennas into two or more transmit antenna groups so that the correlation between antennas in each group is minimized, and each group of antennas transmits on a predetermined frequency with a different time periodicity, and each transmit antenna in each group transmits training sequences which are reciprocally time-orthogonal; receiving by each of a plurality of receive antennas signals from each transmit antenna group; separating the signal from each transmit antenna group via a band-pass filter; determining a maximum estimation range of a frequency offset estimation algorithm by the group having the shortest time period; determining the accuracy of the frequency offset estimation algorithm by the group having the longest time period; and correcting said received signal with a frequency offset estimation.