【摘要】The adapted orthogonal frequency division multiplexing (OFDM) termed as fast-OFDM system and overlapping multi-carrier code division multiple access systems (overlapping multi-carrier direct-sequence CDMA and overlapping multi-tone CDMA) are compared. The effect of the sub-carriers overlapping; in additive white Gaussian noise AWGN; is investigated for binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK). The results show that the system performance of an overlapping multicarrier-CDMA is comparable to that of fast-OFDM system in the presence of AWGN and inter-carrier interference when a conventional matched filter receiver is used.

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