Performance comparison of receivers for the up-link of cyclic prefixed and non-prefixed MC-CDMA systems

In [1], [3], the authors proposed two Fractionally Spaced (FS) Decision Feedback Equalising (DFE) receivers performing Single User Detection (SUD) or Joint Detection (JD) used in Non Cyclic Prefixed (NCP) Multi CarrierCDMA (MC-CDMA) schemes. The objective of this paper is to compare the performance of the above two equalising schemes, against a simpler receiver structure consisting by a single-tap filter bank used in a Cyclic Prefixed (CP) MCCDMA scheme. In the context of the latter, two different banks of single-tap filters will be presented: one designed to perform classical Zero Forcing (ZF) detection and one designed for the Minimum Mean Square Error (MMSE) Criterion. A comparison will be finally made in terms of Bit Error Rate (BER) between NCP MC-CDMA schemes that use equalising receivers and schemes that use the CP extension technique.