Eliminating odd correlations in asynchronous DS CDMA employing cyclic prefix

In an asynchronous DS CDMA system performance of a single-user receiver suffers from the presence of odd cross-correlations of user signatures due to information modulation and variable delays between user signals. To neutralize this effect, employing a cyclic prefix is recommended. Both analytical and simulation results demonstrate that scenarios exist where such a measure brings about a substantial gain in performance with no compromising of spectral efficiency