JSTS:Journal of Semiconductor Technology and Science

The Institute of Electronics and Information Engineers (대한전자공학회)
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Advanced ZigBee Baseband Processor with Variable Data Rates for Internet-of-things Applications

  • Hwang, Hyunsu (School of Electronics and Information Engineering, Korea Aerospace University) ;
  • Jang, Soohyun (Intelligent SoC Research Center, Korea Electronics Technology Institute) ;
  • Lee, Seongjoo (Department of Information and Communication Engineering, Sejong University) ;
  • Jung, Yunho (School of Electronics and Information Engineering, Korea Aerospace University)
  • Received : 2016.10.18
  • Accepted : 2017.02.03
  • Published : 2017.02.28
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Abstract

In this paper, an advanced ZigBee (AZB) system for internet-of-things (IoT) applications is proposed which can support various data rates from 31.25 Kbps to 2 Mbps, and the implementation results of the AZB baseband processor are presented. Repetition coding for 32-chip direct-sequence spread spectrum (DSSS) symbol is applied for low rates under 250 Kbps to extend the coverage. Convolution coding, puncturing, and interleaving for non-DSSS symbol are performed for high rates from 500 Kbps to 2 Mbps for multi-media services. Simulation results show that the coverage increases at the rate of 51.8-77.3% for various environments compared with IEEE 802.15.4 ZigBee. AZB baseband processor was implemented in 180 nm CMOS process and total gate counts are 260K with the size of $5.8mm^2$.

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References

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