Abstract
Rapid increase in the number of Internet of Things (IoT) devices is quickly changing how mobile networks are being used. It shifts usage from primarily downlink transmissions to more uplink transmissions, which employ Single Carrier Frequency Division Multiple Access (SC-FDMA) due to its low Peak to Average Power Ratio. Fifth Generation (5G) mobile networks are believed to be the future standard network that will handle the influx of IoT device uplinks while preserving the required quality of services (QoS). In an IoT perspective, power ratios are highly important in effective battery usage since devices are typically resource-constrained. In this paper, the Enhanced OEA (Opportunistic Efficient Allocation) algorithm has been proposed to advance SC-FDMA for 5G uplink transmission. Improving both decision metric and algorithm design, the proposed algorithm results in smaller computation complexity than the original OEA algorithm. Performance evaluation via simulation has shown that, while preserving the QoS, the Enhanced OEA achieves greater resource utilization and power efficiency, making it highly scalable. We believe that this is a significant result for 5G networks in supporting IoT communications; the techniques used in improving algorithm performance and computation complexity may be widely applicable to other research areas.
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