MMSE Solution for OFDMA Systems With Carrier Frequency Offset Correction

The multi-access Orthogonal Frequency Division Multiplexing (OFDMA) technology has drawn a lot of attention in next generation wireless mobile communications. It is well-known that carrier frequency offsets in OFDMA systems can destroy the orthogonality among subcarriers and produce Inter-Carrier Interference (ICI) and MultiUser Interference (MUI). In the authors' previous works, they proposed a Common Carrier Frequency Offset (CCFO) correction scheme at the OFDMA receiver, which can reduce the ICI/MUI effect and the bit error rate. In the scheme, the CFO correction can be performed by adaptively converging the MSE between the demodulated output and the decision feedback data.

Provided by: Institute of Electrical & Electronic Engineers Topic: Mobility Date Added: Mar 2010 Format: PDF

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