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This paper investigates coordinated resource allocation for cell-center and cell-edge users in multicell orthogonal frequency division multiple-access (OFDMA) wireless networks. Here, we assume the data symbols of each user is only known by one base station (BS). Referring to the fractional frequency reuse (FFR) scheme, the resources for cell-center and cell-edge users are partitioned. Based on such...
In this paper, we study the cross-layer resource allocation for the secondary users (SUs) supporting heterogeneous services in interference-limited spectrum sharing system. Two classes of SUs are considered: delay-tolerant SUs (DT-SUs) and delay- sensitive SUs (DS-SUs). With the queue theory, the delay requirements of DS-SUs are transformed into constant rate requirements. Unlike most previous works,...
This paper investigates joint power and subcarrier allocation issues for cellular OFDM-relay networks. Two novel decentralized schemes, namely semi-distributed method and distributed method based on multihop equilibrium are proposed, which aims to exploit the radio resource management (RRM) function for relay nodes (RNs) and decrease the amount of feedback information for RN-MS links. In decentralized...
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