Summary
International Technical Conference on Circuits/Systems, Computers and Communications
2016
Session Number:P3
Session:
Number:P3-5
Design of Wireless Communication Modem for Internet-of-Things Applications
Hyunsu Hwang, Yongchul Jung, Yunho Jung ,
pp.1011-1014
Publication Date:2016/7/10
Online ISSN:2188-5079
Summary:
In this paper, wireless communication modem for internet-of-things (IoT) applications is proposed which can support various data rates from 31.25Kbps to 2Mbps, and its implementation results are presented. Repetition coding for 32-chip direct-sequence spread spectrum (DSSS) symbol is applied for low rates under 250Kbps to extend the coverage. Convolution coding, puncturing, and interleaving for non-DSSS symbol are performed for high rates from 500Kbps to 2Mbps 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. The modem chip was implemented in 180nm CMOS process and total gate counts are 260K with the size of 5.8mm2.