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Scheduling with single carrier property restriction has a significant impact on system performance in Long Term Evolution (LTE) uplink (UL). Due to the unavoidable delay of control signaling, the scheduling decisions have great influence on the variation of inter-cell interference (ICI) which affects the performance of adaptive modulation and coding (AMC). Many studies have been carried out on the...
In this paper, we investigate the problem of the multi-user uplink scheduling in cognitive radio cellular network. The objective is to maximize the system throughput, while protecting the QoS of primary user (PU) from being affected by cognitive user (CU). Here, PU's QoS is represented by its rate outage probability and it also reflects on the interference temperature (IT). It is equivalent to say...
Opportunistic packet scheduling optimization problem in orthogonal frequency division multiplexing (OFDM) distributed antenna systems (DAS) is investigated by this paper. Physical-layer channel state information (CSI) and wireless links' requirements for bit error rate are taken into account during problem formulation. The optimization aim is to minimize packet loss rate (PLR) subject to limited wireless...
In wide band wireless communication systems, apropos scheduling and link adaptation are significant to meet the high spectrum efficiency and high rate data transmission demand. Channel quality indication (CQI) feedback is crucial for the system to obtain accurate information used in scheduling. But with the increasing of user number and bandwidth, the CQI feedback will bring intolerable overhead....
Conventional heterogeneous-traffic scheduling schemes utilize zero-delay constraint for real-time services, which aims to minimize the average packet delay among real-time users. However, in light or moderate load networks this strategy is unnecessary and leads to low data throughput for non-real-time users. In this paper, we propose a heuristic scheduling scheme to solve this problem. The scheme...
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