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The important problem of resource allocation in multi-user wireless networks is that to achieve the balance between efficience and fairness. In this paper, by using the cross-layer optimization mechanism, we derive an optimization model to obtain efficient and fair downlink sub-carrier allocation in multi-user OFDM wireless networks. A dynamic sub-carrier allocation algorithm (DSAA) is proposed in...
In this paper, we investigate efficient scheduling algorithms in OFDMA multihop relaying networks. The scheduling scheme is modeled as a multiple objective programming problem to maximize the overall capacity and the number of satisfied users under the minimum rate constraint per user. An improved priority (IPRI) algorithm is exploited with novel opportunistic function, which relies on capacity gain,...
We study the quality-of-service (QoS) feasible region of a multiuser system, under the assumption that the QoS is a bijective function of the signal-to-interference ratio (SIR). The inverse function is assumed to be log-convex (e.g. log-SIR). We derive a necessary and sufficient condition for strict convexity of the QoS region. This property holds for the class of log-convex interference functions,...
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