Patent ID: 6996192

Claim:
A method for estimating phase error in a received signal, the method comprising: providing a frequency domain (FD) signal for a TPS frame, where the signal includes a channel response (CR) portion and a data portion and includes K−1 transmission parameter symbol (TPS) sets, with each TPS set having a TPS group frequency, f=f h,g (h=1, . . . , K−1), and including a set of (frequency,amplitude) pairs of values {f,A(f)} fεF for a selected group F of frequencies f, where A(f) is an amplitude associated with a TPS set and K is a selected integer ≧2; processing the CR portion and the data portion to provide an FD CR amplitude S(f;resp) and an FD data portion S(f;data); selecting a TPS set and a corresponding index h=h0, according to one or more selected criteria; estimating a phase correction factor φ(t), using the CR amplitudes S(f;resp) and the data portion S(f;data) for the TPS set with group frequency f h0,g ; providing time delayed version of a time domain (TD) received data signal s(t−Δt(delay);data) for the TPS frame; and forming a selected combination C 3 {s(t−Δt(delay);data),φ(t)} as an estimate of the received data signal, corrected for phase error, s(t−Δt(delay);data;corr).