Literature Database Entry

zhao2026emulation

Chen Zhao, "Emulation of Wide-band Wi-Fi Frames Using Narrowband ZigBee Transmitter," Master's Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), October 2026. (Advisors: Sascha Rösler and Christos Laskos; Referees: Falko Dressler and Odej Kao)

Abstract

The coexistence of heterogeneous wireless technologies in the shared 2.4 GHz ISM band creates opportunities for cross-technology communication. However, communication from narrowband ZigBee devices to WiFi receivers is challenging due to fundamental differences in their physical-layer characteristics. This thesis investigates whether ZigBee waveforms can be combined to emulate WiFi packets that can be detected and decoded by an unmodified WiFi receiver. A waveform emulation framework based on sparse signal approximation is developed, in which frequency-shifted ZigBee waveforms are superposed to synthesize the individual fields of a WiFi packet. Multiple ZigBee waveforms at different center frequencies are transmitted simultaneously and superposed, with complex-valued coefficients controlling their individual amplitude and phase contributions. The ZigBee waveforms used for the superposition are selected using a receiver-driven greedy algorithm for the WiFi legacy training fields and Orthogonal Matching Pursuit for the L-SIG and Data fields. The proposed approach is evaluated through AWGN simulations and a conducted hardware experiment. The results demonstrate that emulated packets can be successfully decoded by a standard WiFi receiver, although they require a higher SNR than conventional WiFi packets. Hardware measurements confirm successful reception by a commercial WiFi receiver and reveal an additional reception penalty for the emulated packets at comparable receiver-reported RSSI, while packet delivery ratios above 0.9 are achieved under sufficiently strong received-signal conditions.

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Chen Zhao

BibTeX reference

@phdthesis{zhao2026emulation,
    author = {Zhao, Chen},
    title = {{Emulation of Wide-band Wi-Fi Frames Using Narrowband ZigBee Transmitter}},
    advisor = {R{\"{o}}sler, Sascha and Laskos, Christos},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {10},
    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