A New Approach to Interference Mitigation
نویسندگان
چکیده
Most of the modulated signals are known to have cyclostationary property in their probabilistic distribution. As it is shown, this cyclostationary property of the signal leads to the presence of redundancy in signal frequency spectrum. This redundancy can be utilized in the design of higher performance receivers with better-restored signal quality. In this paper, the use of cyclostationary property is examined for designing CDMA systems. It is shown that using spectral redundancy, which exists in CDMA signals, leads to higher performance receivers. One of these optimum receivers, which are based on the received signal’s cyclostationary property, is FRESH-DFE. In this paper we compare two different filters, FRESH-DFE & conventional DFE in multiple access CDMA systems. A set of simulations was done in different situations and in all of them the FRESH-DFE showed better performance than conventional DFE. Keywords-component; FRESH-DFE; CDMA; CA; CCA
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