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2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2021
Self-interference (SI) mitigation is critical for full-duplex and frequency-domain duplex systems. Canceller noise and linearity limits the SI power that can be tolerated at RX input. A dual-path SI cancellation scheme is presented where the noise and distortion from the canceller are addressed through a differential noise-cancelling path. The proposed
Mostafa Essawy +5 more
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Self-interference (SI) mitigation is critical for full-duplex and frequency-domain duplex systems. Canceller noise and linearity limits the SI power that can be tolerated at RX input. A dual-path SI cancellation scheme is presented where the noise and distortion from the canceller are addressed through a differential noise-cancelling path. The proposed
Mostafa Essawy +5 more
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Filter Design for Self-Interference Cancellation
2020Mitigation of self-interference is the prime challenge in making full-duplex technology feasible in wireless communications. In this chapter, we first present system model of a wireless communication link including a source, full-duplex transceiver, and destination, and discuss different approaches and assumptions when building the signal model.
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Maximum Likelihood Self-Interference Cancellation
2017In this chapter, we propose a maximum likelihood (ML) approach to jointly estimate the self-interference and the intended channels. We perfectly exploit the known transmitted symbols from its own transceiver and both the known pilot and unknown data symbols from the other intended transceiver.
Tho Le-Ngoc, Ahmed Masmoudi
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MIMO On-Frequency Repeater with Self-Interference Cancellation and Mitigation
VTC Spring 2009 - IEEE 69th Vehicular Technology Conference, 2009In this paper, we consider the idea of a MIMO on- frequency repeater (OFR), with end-to-end MIMO channel rank preservation, MIMO aware repeater output-to-input self- interference cancellation, and a new repeater output-to-input beamforming based interference mitigation method for MIMO signals. The latter is used to increase the repeater output-to-input
Peter Larsson, Mikael Prytz
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Limiting Factors in Self-Interference Cancellation
2017Various experimental results have stated that the self-interference (SI) in full-duplex communication can be mitigated to properly detect the intended signal. However, relatively little is known about the cancellation limits of these systems. A good SI-cancellation strategy passes first by a proper understanding of the nature of this SI. This is highly
Tho Le-Ngoc, Ahmed Masmoudi
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Blind self-interference cancellation for full-duplex relays
2014 48th Asilomar Conference on Signals, Systems and Computers, 2014Full-duplex relays increase the spectral efficiency and diversity, especially for the amplify and forward mode. However, transmission and reception in the same frequency band produce coupling between the transmitted and received signals that needs to be reduced. The cyclic prefix introduced in modern modulations produces a periodic autocorrelation that
Gustavo J. González +2 more
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Self-interference cancellation for full-duplex MIMO transceivers
2015 IEEE Wireless Communications and Networking Conference (WCNC), 2015Full-duplex operation requires effective self-interference (SI) cancellation that in turn needs reliable SI channel estimation. In this paper, we develop two estimation algorithms suitable for a 2-stage SI cancellation structure. By exploiting the sparsity of the SI channel, we first derive a compressed sensing-based SI channel estimation algorithm to ...
Masmoudi, Ahmed, Le-Ngoc, Tho
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Antennas and Radio Frequency Self-Interference Cancellation
2020This chapter presents and reviews radio frequency (RF) transceiver architectures for in-band full-duplex, spanning both antenna techniques and RF cancellation loops. In the antenna domain, isolation can be achieved using separate transmit and receive antennas, exploiting propagation loss for transmit-to-receive isolation, or through more complicated ...
Laughlin, Leo, Beach, Mark
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Wideband self-interference cancellation for better spectrum use
2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM), 2016A large enough separation in the frequency domain between signals going in opposite directions is instrumental to facilitate the implementation of transceivers able to isolate the receiver from the high power transmitted signal. A more flexible allocation of spectrum requires the application of interference cancellation countermeasures.
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