IEEE Transactions on Information Theory
Iterative construction of optimum signature sequence sets in synchronous CDMA systems
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Wideband DS-CDMA for next-generation mobile communications systems
IEEE Communications Magazine
Transmit beamforming and power control for cellular wireless systems
IEEE Journal on Selected Areas in Communications
Transmitter adaptation in multicode DS-CDMA systems
IEEE Journal on Selected Areas in Communications
A framework for uplink power control in cellular radio systems
IEEE Journal on Selected Areas in Communications
User admissibility in uplink wireless systems with multipath and target SINR requirements
IEEE Communications Letters
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To maximize the downlink code-division multiple access (CDMA) system capacity, we propose to minimize the total transmitted power of the system subject to users' signal-to-interference ratio (SIR) requirements via designing optimum transmitter sequences and utilizing linear optimum receivers (minimum mean square error (MMSE) receiver). In our work on joint transmitter-receiver design for the downlink CDMA systems with multiple antennas and multipath channels, we develop several optimization algorithms by considering various system constraints and prove their convergence. We empirically observed that under the optimization algorithm with no constraint on the system, the optimum receiver structure matches the received transmitter sequences. A simulation study is performed to see how the different practical system constraints penalize the system with respect to the optimum algorithm with no constraint on the system.