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Residual carrier frequency offset tracking for OFDM-based systems

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3 Author(s)
Chih-Peng Li ; Inst. of Commun. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan ; Po-Lin Chen ; Tsui-Tsai Lin

In this work, four tracking schemes are analyzed for OFDM-based systems and simulation experiments are performed for an IEEE 802.11a WLAN system. The first scheme is a newly proposed symbol-by-symbol method, which estimates the carrier phase offset of each OFDM symbol and then appropriate compensation is made. The other three schemes, namely L-extension algorithm, D symbol algorithm and maximum likelihood estimation, estimate the residual carrier frequency offset and results are coupled to the local oscillator.

Published in:

Circuits and Systems, 2004. Proceedings. The 2004 IEEE Asia-Pacific Conference on  (Volume:2 )

Date of Conference:

6-9 Dec. 2004