An Advanced GNU Radio Receiver of IEEE 802.15.4 OQPSK Physical Layer

Evan Faulkner, Zelin Yun, Shengli Zhou, Zhijie J. Shi, Song Han, Georgios B. Giannakis

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


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 languageEnglish (US)
Article number9348953
Pages (from-to)9206-9218
Number of pages13
JournalIEEE Internet of Things Journal
Issue number11
StatePublished - Jun 1 2021

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:;

Publisher Copyright:
© 2014 IEEE.


  • GNU-Radio
  • IEEE 802.15.4
  • IoT
  • offset quadrature phase-shift keying (OQPSK)
  • software-defined radio (SDR)


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