Abstract
In this article, we present an advanced coherent receiver for the IEEE 802.15.4 offset quadrature phase-shift keying (OQPSK) physical layer and provide an open-source implementation in the GNU Radio framework. Simulation and field test results show that the proposed receiver achieves about 11-dB power gain over an existing GNU Radio receiver, which treats OQPSK as minimum-shift-keying (MSK) for low-complexity processing. While suitable modules can be added to the MSK-based receiver for performance enhancement, the proposed receiver still maintains a 6-dB power gain. The proposed coherent receiver is attractive for IoT applications where a powerful software-defined-radio (SDR)-based gateway is deployed to interact with various sensors.
Original language | English (US) |
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Article number | 9348953 |
Pages (from-to) | 9206-9218 |
Number of pages | 13 |
Journal | IEEE Internet of Things Journal |
Volume | 8 |
Issue number | 11 |
DOIs | |
State | Published - Jun 1 2021 |
Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received October 11, 2020; revised January 12, 2021; accepted January 27, 2021. Date of publication February 5, 2021; date of current version May 21, 2021. The work of Zelin Yun and Song Han was supported in part by the National Science Foundation (NSF) under Award CNS-1925706 and Award IIP-1919229. (Evan Faulkner and Zelin Yun contributed equally to this work.) (Corresponding author: Shengli Zhou.) Evan Faulkner and Shengli Zhou are with the Department of Electrical and Computer Engineering, University of Connecticut, Storrs, CT 06250 USA (e-mail: evan.faulkner@uconn.edu; shengli.zhou@uconn.edu).
Publisher Copyright:
© 2014 IEEE.
Keywords
- GNU-Radio
- IEEE 802.15.4
- IoT
- offset quadrature phase-shift keying (OQPSK)
- software-defined radio (SDR)