Greedy SINR maximization in collaborative multibase wireless systems
EURASIP Journal on Wireless Communications and Networking - Special issue on multiuser MIMO networks
EURASIP Journal on Wireless Communications and Networking - Special issue on innovative signal transmission and detection techniques for next generation cellular CDMA systems
MIMO transceiver design via majorization theory
Foundations and Trends in Communications and Information Theory
IEEE Transactions on Signal Processing
Bit rate comparison of adaptive OFDM and cyclic prefixed single-with DFE
IEEE Communications Letters
Joint bit allocation and precoding for MIMO systems with decision feedback detection
IEEE Transactions on Signal Processing
SINR-maximizing spreading code allocation for non-linear serial interference cancellation
IEEE Transactions on Communications
MIMO transceivers with decision feedback and bit loading: theory and optimization
IEEE Transactions on Signal Processing
Game-theoretic approach to joint transmitter adaptation and power control in wireless systems
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics - Special issue on game theory
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We consider a symbol-synchronous code-division multiple-access (CDMA) system that is equipped with a multiuser decision-feedback receiver and for which power control is available. The users are each assigned a quality-of-service (QoS) threshold to be guaranteed by the system, and to cover scenarios for which there are multiple classes of users, these are not required to be equal to each other. For an ideal decision-feedback receiver, it is known that with enough power the system can always meet the users' QoS thresholds, so we instead minimize the sum of the users' received powers over system designs (i.e., signature sequences, power-control policy, and decision-feedback receiver) which guarantee the QoS requirements. It is found that the optimal design produces two classes of users, those whose sequences and powers satisfy with equality the generalized Welch bound inequality and those oversized users that are mutually orthogonal to each other and the rest of the users. In terms of power and bandwidth savings, the optimal sequences for the decision-feedback receiver are found to compare very favorably to optimal designs for linear receivers and to random sequences for the decision-feedback receiver.