Adaptive Resource Allocation for Delay Differentiated Traffic in Multiuser OFDM Systems
作者： Meixia Tao , Ying-chang Liang , Fan Zhang
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摘要: Most existing work on adaptive allocation of subcarriers and power in multiuser OFDM systems has focused homogeneous traffic consisting delay-constrained data (guaranteed service) or delay-tolerant (best-effort only. In this work, we investigate the resource problem a heterogeneous system with both (DC) no-delay-constrained (NDC) traffic. The objective is to maximize sum-rate all users NDC while maintaining guaranteed rates for DC under total transmission constraint. Finding optimal formulated as convex programming problem. An iterative algorithm proposed compute solutions numerically. A low-complexity suboptimal also presented. Simulation experiments are conducted evaluate performance algorithms terms service outage probability achievable rate pairs
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