Efficient fair queueing using deficit round-robin
IEEE/ACM Transactions on Networking (TON)
Approximation algorithms for NP-hard problems
Approximation algorithms for NP-hard problems
Fair scheduling in wireless packet networks
IEEE/ACM Transactions on Networking (TON)
The budgeted maximum coverage problem
Information Processing Letters
Scheduling real-time traffic with deadlines over a wireless channel
Wireless Networks
Computers and Intractability: A Guide to the Theory of NP-Completeness
Computers and Intractability: A Guide to the Theory of NP-Completeness
A Polynomial Time Approximation Scheme for the Multiple Knapsack Problem
SIAM Journal on Computing
An efficient approximation for the generalized assignment problem
Information Processing Letters
IEEE/ACM Transactions on Networking (TON)
The Generalized Maximum Coverage Problem
Information Processing Letters
On the complexity of sequential rectangle placement in IEEE 802.16/WiMAX systems
ESA'07 Proceedings of the 15th annual European conference on Algorithms
Computationally efficient bandwidth allocation and power control for OFDMA
IEEE Transactions on Wireless Communications
Cross-layer optimization for OFDM wireless networks-part I: theoretical framework
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
Adaptation techniques in wireless packet data services
IEEE Communications Magazine
Journal of Network and Computer Applications
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Orthogonal frequency-division multiple access (OFDMA) is one of the most important modulation and access methods for the future mobile networks. Before transmitting a frame on the downlink, an OFDMA base station has to invoke an algorithm that determines which of the pending packets will be transmitted, what modulation should be used for each of them, and how to construct the complex OFDMA frame matrix as a collection of rectangles that fit into a single matrix with fixed dimensions. We propose efficient algorithms, with performance guarantee, that solve this intricate OFDMA scheduling problem by breaking it down into two subproblems, referred to as macro and micro scheduling. We analyze the computational complexity of these subproblems and develop efficient algorithms for solving them.