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Carrier frequency offset recovery for a zero-IF OFDM receiver

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2 Author(s)
M. Mitzel ; TRLabs, Saskatchewan Univ., Saskatoon, Sask., Canada ; E. Salt

Zero-IF receivers eliminate the need for costly RF and IF filters and significantly decrease the cost of a receiver. Like IF receivers, direct conversion receivers experience frequency offsets in the down conversion process. This paper proposes a carrier frequency offset recovery algorithm for use with zero-IF OFDM receivers. The algorithm recovers the offset from data modulated carriers without relying on redundant data such as pilots carriers, null carriers, or training sequences. A phase equivalent model for the algorithm is presented, and simulations are employed to verify the concept

Published in:

Canadian Conference on Electrical and Computer Engineering, 2005.

Date of Conference:

1-4 May 2005