Abstract
A definition of total weighted square correlation (TWSC) for an overloaded multicellular synchronous DS-CDMA system in the presence of multipath on the uplink is introduced. We assume the channel state information known perfectly both at transmitter and receiver. The optimum solutions of minimizing TWSC are the orthogonal generalized WBE (Welch bound equality) spreading sequences. The design of such sequences in the context of cooperative multibase DS-CDMA systems under TWSC criterion is presented. The bandwidth of initial generalized WBE signals of each cell is preserved in the extended signal space associated to multiple cell system.
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