Joint 2D-pilot-symbol-assisted-modulation and decision-directed frequency synchronization schemes for coherent OFDM
Publikation/Tidskrift/Serie: Proc. IEEE Acoustics, Speech, and Signal Processing Conference
Förlag: IEEE--Institute of Electrical and Electronics Engineers Inc.
A new frequency offset tracking approach for OFDM has been addressed. Two-dimensional pilot-symbol assisted modulation (2D-PSAM) is employed in coherent OFDM for channel estimation and it is based on inserting known symbols spread out through the 2D time-frequency grid. We show that these scattered symbols can also be employed to perform frequency synchronization. Maximum likelihood estimation has been derived for both time and frequency domains. Also, if a decision-guided strategy is used jointly with the 2D-PSAM signalling, an improvement in performance can be attained
- Electrical Engineering, Electronic Engineering, Information Engineering
IEEE Acoustics, Speech, and Signal Processing Conference
- Radio Systems-lup-obsolete
- ISBN: 0-7803-6293-4