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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 studies the power allocation (PA) and distributed antenna (DA) selection in the downlink orthogonal frequency division multiplexing distributed antenna systems (OFDM-DAS). Two schemes are analyzed, with the objective of maximizing the downlink received signal power. In the first scheme, the DA selection is based on large-scale fading only and the related PA is simple. It is proved that...
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