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Performance analysis of equalized OFDM systems in Rayleigh fading

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Fig. 1. A typical pilot symbol distribution in the time-frequency plane of an OFDM system
Fig. 2. Constellation of Gray-coded rectangular 16-QAM and the corresponding I-Q bit mapping.
Fig. 3. BEP performance of differential BPSK and QPSK systems as functions of 
 and f T .
Fig. 5. BEP performance of OFDM-16QAM systems using the LMMSE method and polynomial interpolation; 
 = the estimated 
 and

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