Literature Database Entry

chukwuma2026wur-ctc

Emmanuel Iyke Chukwuma, "WUR-CTC: Towards Energy-Efficient Communication with Wi-Fi-to-Wake-Up Receiver Cross-Technology Communication for Industrial IoT," Master's Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), August 2026. (Advisor: Sascha Rösler; Referees: Falko Dressler and Odej Kao)

Abstract

Industrial wireless sensor networks depend on battery-powered nodes whose operational lifetime is determined primarily by the energy cost of radio communication. The dominant energy drain is not data transmission but idle listening: a conventional transceiver monitors the channel continuously, drawing tens of milliwatts regardless of whether any useful signal is present. Wake-Up Receivers (WURs) address this by replacing the always-on radio with a dedicated ultra-low-power front-end that draws only microwatts, but activating a WUR requires a transmitter capable of generating a compatible On-Off Keying (OOK)-modulated wake-up signal. In industrial sites where Institute of Electrical and Electronics Engineers (IEEE) 802.11 infrastructure is already deployed, Cross-Technology Communication (CTC) offers a path forward: generating the required signal using an existing Wi-Fi transmitter without hardware modification. In this thesis I investigate whether a commodity IEEE 802.11b transmitter can generate the amplitude envelope required to activate a Texas Instruments CC2500 receiver configured for OOK reception at 2.4 GHz, without modification to the transmitter hardware. To this end, I develop two Complementary Code Keying (CCK)-to-OOK signal models: Waveform Emulation, which exploits codeword spectral diversity at a 1 MHz frequency offset, and Optimal Power, which selects the maximum-contrast codeword pair at zero frequency offset. Both are evaluated against a Legacy OOK baseline through a MATLAB Monte Carlo simulation and a hardware validation testbed. The simulation results confirm that both methods reliably activate the receiver, incurring Signal-to-Noise Ratio (SNR) penalties of 6 dB and 8 dB respectively relative to the Legacy OOK ceiling, with each variant offering a distinct trade-off between link budget and frequency tolerance. Hardware validation confirms the simulation model overall, but reveals that Optimal Power’s narrow frequency tolerance causes it to underperform Waveform Emulation under real hardware conditions—a finding consistent with the CCK power contrast analysis and not directly measurable in simulation alone.

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Emmanuel Iyke Chukwuma

BibTeX reference

@phdthesis{chukwuma2026wur-ctc,
    author = {Chukwuma, Emmanuel Iyke},
    title = {{WUR-CTC: Towards Energy-Efficient Communication with Wi-Fi-to-Wake-Up Receiver Cross-Technology Communication for Industrial IoT}},
    advisor = {R{\"{o}}sler, Sascha},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {8},
    referee = {Dressler, Falko and Kao, Odej},
    school = {TU Berlin (TUB)},
    type = {Master's Thesis},
    year = {2026},
   }
   
   

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Last modified: 2026-09-12