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Muhammad Sohaib Amjad and Falko Dressler, "Experimental Insights on Software-based Real-Time SI Cancellation for In-Band Full Duplex DF Relays," Proceedings of IEEE International Conference on Communications (ICC 2019), Shanghai, China, May 2019.


In the last decade, infrastructure relays have been adopted by wireless standards, such as WiMAX and LTE, to substantially enhance the coverage and performance of wireless systems. These relays operate in a half-duplex mode, which not only increases the overall latency but also causes spectral losses. In contrast, an in-band full-duplex relay could effectively cope with these issues by simultaneously receiving packets from source and forwarding them towards destination. This becomes particularly interesting given the recent advancement in self-interference suppression techniques. In this work, we present an SDR-based real-time implementation of a full-duplex decode and forward relay in GNURadio. Based on open-source and programmable hardware and software, the implementation is completely transparent and can be studied in all details and modified if needed. With an extensive set of experiments, we val- idate the practical performance of the proposed relay system, and measure achievable throughput gains. Our results demonstrate and underline the huge advantage of switching from the classical half-duplex relaying to full-duplex relay systems.

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Muhammad Sohaib Amjad
Falko Dressler

BibTeX reference

    author = {Amjad, Muhammad Sohaib and Dressler, Falko},
    doi = {10.1109/ICC.2019.8762085},
    title = {{Experimental Insights on Software-based Real-Time SI Cancellation for In-Band Full Duplex DF Relays}},
    publisher = {IEEE},
    address = {Shanghai, China},
    booktitle = {IEEE International Conference on Communications (ICC 2019)},
    month = {5},
    year = {2019},

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