The implementation of conventional Multi-Code Code Division Multiple Access (CMC-CDMA) system needs many orthogonal codes (OCs) compared to traditional Direct Sequence-CDMA (DS-CDMA) systems. To reduce the number of OCs in MC-CDMA for multi-media services, we propose a new scheme in which a quarter orthogonal code (QOC) technique is adopted. To clarify the validity of oar proposed system, the computer simulations have been performed.
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