EURASIP Journal on Wireless Communications and Networking - Special issue on multiuser MIMO networks
Fundamentals of wireless communication
Fundamentals of wireless communication
Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels
IEEE Transactions on Signal Processing
Transmitter Optimization for the Multi-Antenna Downlink With Per-Antenna Power Constraints
IEEE Transactions on Signal Processing
Network coordination for spectrally efficient communications in cellular systems
IEEE Wireless Communications
The Capacity Region of the Gaussian Multiple-Input Multiple-Output Broadcast Channel
IEEE Transactions on Information Theory
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
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This paper considers a joint frequency and space resources allocation in an OFDMA cellular system with base stations (BSs) cooperation. The problem is formulated as a weighted sum rate maximization subject to per-antenna power constraint, using block-diagonalization (BD) for cooperative precoding. An efficient solution based on Lagrangian dual decomposition is proposed. Compared with the optimal solution obtained from exhaustive search, the computational complexity is reduced from one increasing exponentially with the number of subcarriers M to one increasing linearly with M. Simulation results show that the proposed solution approaches the upper bound of the optimal value within a negligible gap and outperforms the heuristic solutions based on serial allocation (i.e., allocating the frequency and space resources serially).