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Data Rate Enhancement for IEEE 802.15.4 Based FSK Transmission Scheme

Frequency shift keying (FSK) is a widely-used transmission scheme for Internet of things (IoT) due to the merits of simple implementation and low power consumption. To expand IoT systems, higher data rate is expected for massive IoT or new IoT application scenarios. In this paper, a novel design of a data rate enhancement is proposed for IEEE 802.15.4 based 2-FSK transmission scheme while satisfying the regulations of spectrum usage by ARIB STD-T108 in Japan. Computer simulation and experiments with software-defined receiver (SDR) are conducted progressively to evaluate the performance of FSK with enhanced data rate parameters. Moreover, a prototype of integrated circuit (IC) is developed and experiments with ICs are conducted to demonstrate the effectiveness of the proposed scheme. Evaluation results show that the proposed scheme enhances the data rate to 600 kbps with a required input power increase of 7.0 dB in comparison with the conventional data rate of 100 kbps. Also, the effects of adopting IC are analyzed by contrast experiments.