This paper presents the capacity analysis of a threshold-based SNR scheduler in the long-term evolution (LTE)\r\ncellular systems. LTE standard has adopted multiuser OFDMA, and stipulates adjacent subcarrier groupings for\r\nmapping the physical OFDM subcarriers into resource blocks that form the basic unit of radio resource\r\nmanagement (RRM) in LTE network. The standard however did not specify the details of the RRM algorithm to be\r\nemployed, leaving this aspect for vendors to differentiate their products. Popular RRM algorithms such as roundrobin\r\n(RR), proportional fairness (PF), and maximum SNR (MaxSNR), have been implemented recently as operatorselectable\r\noptions on LTE base station (BS). In this paper, we present a threshold-based SNR scheduler that has the\r\ncapability of modeling all of the above-mentioned algorithms and thus allows vendors to combine the separate\r\nimplementations of these algorithms into one generalized scheduling algorithm, where the threshold level used at\r\nany time instant defines the scheduling discipline to be realized. We derive the capacity enhancement achievable\r\nusing the proposed scheduling scheme, and also present system-level simulations to corroborate the analysis. Our\r\nanalytical and simulation results indicate that the proposed algorithm models the existing ones closely at different\r\nvalues of the threshold. The results also demonstrate the data rate enhancements, and the level of user fairness,\r\nachievable in the network for various levels of the threshold
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