Remarks on implementation of O(n1/2τ) assignment algorithms
ACM Transactions on Mathematical Software (TOMS)
Fundamentals of wireless communication
Fundamentals of wireless communication
Diversity-multiplexing tradeoff in OFDMA systems with coherence bandwidth splitting
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Optimal diversity-multiplexing tradeoff in OFDMA systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Adaptive MIMO-OFDM based on partial channel state information
IEEE Transactions on Signal Processing
Dynamic multiuser resource allocation and adaptation for wireless systems
IEEE Wireless Communications
Cross-layer optimization for OFDM wireless networks-part I: theoretical framework
IEEE Transactions on Wireless Communications
Cross-Layer Adaptive Resource Management for Wireless Packet Networks With OFDM Signaling
IEEE Transactions on Wireless Communications
Fading channels: information-theoretic and communications aspects
IEEE Transactions on Information Theory
Multiuser OFDM with adaptive subcarrier, bit, and power allocation
IEEE Journal on Selected Areas in Communications
Transmit power adaptation for multiuser OFDM systems
IEEE Journal on Selected Areas in Communications
RBG matching: an innovative combinatorial approach for OFDMA resource allocation
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Uplink cross-layer scheduling with differential QoS requirements in OFDMA systems
EURASIP Journal on Wireless Communications and Networking - Special issue on adaptive cross-layer strategies for fourth generation wireless communications
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This paper considers the problem of optimal subcarrier allocation in OFDMA systems to achieve the minimum outage probability while guaranteeing fairness. The optimal subcarrier allocation algorithm and the maximum frequency diversity gain are both analyzed through the maximum matching method based on the random bipartite graph theory. Accordingly, a surprising result is found, which shows that the maximum frequency diversity gain in subcarrier-sharing OFDMA systems is the same as that in point-to-point OFDM systems that serve only one user by using N subcarriers. It is then demonstrated that this maximum frequency diversity gain can be achieved by a proposed Random Vertex Rotation based Hopcroft-Karp (RVRHK) algorithm with the time complexity of O(N2.5), where N is the number of subcarriers. Because the theoretical analysis and the RVRHK algorithm are both based on the maximum matching method, the maximum frequency diversity in OFDMA systems is referred to as the max-matching diversity in this paper.