Experiment-Driven Characterization of Full-Duplex Wireless Systems

By Marco F. Duarte, Chris Dick, Ashutosh Sabharwal. IEEE Transactions on Wireless Communications, 2011

1,427 citations recorded by the source corpus.

We present an experiment-based characterization of passive suppression and active self-interference cancellation mechanisms in full-duplex wireless communication systems. In particular, we consider passive suppression due to antenna separation at the same node, and active cancellation in analog and/or digital domain. First, we show that the average amount of cancellation increases for active cancellation techniques as the received self-interference power increases. Our characterization of the average cancellation as a function of the self-interference power allows us to show that for a constant signal-to-interference ratio at the receiver antenna (before any active cancellation is applied), the rate of a full-duplex link increases as the self-interference power increases. Second, we show that applying digital cancellation after analog cancellation can sometimes increase the self-interference, and thus digital cancellation is more effective when applied selectively based on measured suppression values. Third, we complete our study of the impact of self-interference cancellation mechanisms by characterizing the probability distribution of the self-interference channel before and after cancellation.

Subfields: Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/9f8a764ee0dbafae0a8ad91f0f8389226e78b006

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Citations in the corpus

BackFi: High Throughput WiFi Backscatter (2015, methodology): “We leverage recent work on self-interference can-celation for full-duplex radios to enable the backscatter signal to be received while the WiFi device is transmitting [17, 20, 43, 12, 8, 11, 9, 8, 26, 16, 39, 10].”
A Survey of In-Band Full-Duplex Transmission: From the Perspective of PHY and MAC Layers (2015, methodology): “The authors in [13], [14], [30], [33], [38], [41], [51], [53], [54] implemented IBFD systems with WARP platforms to verify the feasibility of IBFD systems in smallsized devices such as laptop computers.”
Full-Duplex OFDM Radar With LTE and 5G NR Waveforms: Challenges, Solutions, and Measurements (2019, background): “This is one clear difference to all earlier fullduplex radio works, such as [41], [47], and [48], which do not separate between the direct and reflected SI components.”
Nonorthogonal Multiple Access for 5G and Beyond (2017, background): “In full-duplex systems, self interference cancellation (IC) is the key issue [60].”
Full-Duplex Transceiver System Calculations: Analysis of ADC and Linearity Challenges (2014, methodology): “The average power difference between the main component and the multipath components is set to 45 dB, which is on the same range as values measured in [29].”
Design and Characterization of a Full-Duplex Multiantenna System for WiFi Networks (2012, background): “Finally, none of the previous works [5]–[7], [10], [11], [20] report cancelations larger than 73 dB.”
A Survey on Millimeter-Wave Beamforming Enabled UAV Communications and Networking (2021, background): “It was shown that by isolating the transmit/receive antenna and adopting the interference cancellation techniques in the propagation-analogdigital domain, the self-interference can be well mitigated [238]–[242].”
All-Digital Self-Interference Cancellation Technique for Full-Duplex Systems (2014, methodology): “The performance is also compared to the conventional digital cancellation techniques [6].”
Passive Self-Interference Suppression for Full-Duplex Infrastructure Nodes (2013, methodology): “We note that the above method of characterizing a prototype’s performance by computing achievable rates from measured SNR/SSINR is well-established in prior work such as [7], [30], [31].”
Full-Duplex Wireless Communications: Challenges, Solutions, and Future Research Directions (2016, background): “lation, it is still noteworthy that digital cancellation operating in isolation without analog cancellation fails to provide a sufficiently high SI suppression [8].”
Simultaneous Wireless Information and Power Transfer (SWIPT): Recent Advances and Future Challenges (2018, background): “Enormous efforts and progress, in both academia and industry, have been made in SI Cancellation (SIC) [91], [93], [94].”
Full-duplex bidirectional MIMO: Achievable rates under limited dynamic range (2011, neutral): “, [7], [11], [13]), careful antenna placement (e.”
Widely Linear Digital Self-Interference Cancellation in Direct-Conversion Full-Duplex Transceiver (2014, methodology): “where a(t) is typically an estimate for the main path of the coupling channel [2], [3], [7].”
In-Band Full-Duplex Relaying: A Survey, Research Issues and Challenges (2015, methodology): “4, FDR systems can be equipped with either separate-antenna [8], [10], [15],”
Waveform Design and Performance Analysis for Full-Duplex Integrated Sensing and Communication (2021, background): “Note that SI can be mitigated by contemporary SIC techniques [42] and the fact that the FD-ISAC node perfectly knows the waveform transmitted by itself.”
Industrial Communication Systems and Their Future Challenges: Next-Generation Ethernet, IIoT, and 5G (2019, background): “The key feature of such networks is the ability of a node to simultaneously transmit and receive frames [150].”
Full duplex radios (2013, neutral): “Categories and Subject Descriptors C.2.1 [Computer Communication Networks]: Network Architecture and Design—Wireless communication General Terms: Algorithms, Design, Experimentation, Performance Keywords: Full Duplex, Interference Cancellation, Non-linear Cancellation”
MIDU: enabling MIMO full duplex (2012, methodology): “Recent work has proposed several techniques to enable FD at Wi-Fi transmit powers [7, 8, 13].”