Decision feedback channel estimation and pilot tracking for OFDM systems

• Main Authors: GILBERT JEFFREY M, CHOI WON-JOON, NG TAO-FEI S, SUN QINFANG, ZHANG NING, WANG YI-HSIU
• Format: Patent
• Language: English
• Published: 13.10.2005
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

Current OFDM systems use a limited number of symbols and/or sub-channels to provide approximations for channel estimations and pilot tracking, i.e. phase estimations. For example, two training symbols in the preamble of a data packet are used to provide channel estimation. Four of the fifty-four sub...