Linear phase interpolation in frequency domain for multicarrier CDMA systems using block-type pilot arrangement

A multicarrier CDMA system combines the advantages of an orthogonal frequency division multiplexing (OFDM) scheme with those of a CDMA scheme. Much attention has been paid to the MC-CDMA system since it was proposed in 1993. In this paper, effects caused by carrier frequency offset over successive OFDM symbols are investigated. A novel linear phase interpolation method is proposed to combat phase rotation problem when block-type pilot arrangement is used in a MC-CDMA system. Analysis and computer simulation show that the proposed scheme effectively reduces thenegative impact of carrier frequency offset on system performance.