Abstract
Relying on symbol blocking and judicious design of user codes, this paper develops a Generalized Multicarrier (GMC) quasi-synchronous CDMA system capable of multiuser interference (MUI) elimination and inter symbol interference (ISI) suppression, irrespective of the wireless frequency selective channels encountered in the uplink. As the term reveals, GMC-CDMA provides a unifying framework for multicaxrier (MC) CDMA systems and as this paper shows, it offers flexibility in full load (maximum number of users allowed by the available bandwidth) and in reduced load settings. A blind channel estimation algorithm is also derived. Analytic evaluation and simulations illustrate that GMC-CDMA outperforms competing MC-CDMA alternatives especially in the presence of uplink multipath channels.
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