Hi Guys, I am interested in real-time channel estimation of a GSM signal. Since GSMK is a non-coherent modulation, performing channel estimation is not easy, at least to me. I have found a paper in which they correct for the 90 degree phase shift in every symbol (multiply by i^k, k'th symbol) before they correlate it with a known sequence (mid-amble of the SCH-packet). I hope you guys understand what I'm talking about. The absolute value of the main peak of my channel impulse response is what I expect it to be, however the phase information is totally off.
Could anyone point me to some reference, or explain briefly, how I could perform a good channel estimation for GSM? Or any idea where else I should post this question? Thanks, Teun van Berkel -------------------------------------------------------- Philips Research Nat.Lab., WY 5.015a Eindhoven, The Netherlands _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
