Full-duplex in large-scale wireless systems

Yin, Bei; Wu, Michael; Studer, Christoph; Cavallaro, Joseph R.; Lilleberg, J.

doi:10.1109/acssc.2013.6810573

Cited by 61 publications

(74 citation statements)

References 17 publications

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“…This trend is in line with recent major advances in SI supression techniques [10]- [12]. Broadly speaking, SI can be tackled using isolation in space [13], [14], digital/analog subtraction [15], [16], and as a combination of both [17]. Several real-time point-to-point prototypes of FD radio nodes have been demonstrated in practice recently [18].…”

Section: Introductionmentioning

confidence: 67%

Self-Interference Distribution over Full-Duplex Multi-User MIMO Channels

Shojaeifard

Wong

Renzo

et al. 2017

2017 IEEE Wireless Communications and Networking Conference (WCNC)

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Abstract-We consider the case where a reference full-duplex (FD) node (e.g., base station), equipped with arbitrary number of transmit/receive antennas, utilizes generalized linear beamformers to simultaneously communicate with multiple FD radios (e.g., user equipments). The fading coefficients for the residual self-interference (SI) channels are drawn from the complex Gaussian distribution with arbitrary mean and variance. Here, it is not possible to directly derive the distribution of the bidirectional channel power gain. As a result, we adopt the method of moments in order to provide a new Gamma approximation for the residual SI distribution over FD multi-user MIMO Rician fading channels. The proposed theorem holds under arbitrary linear precoder/decoder design, number of antennas and streams, and SI cancellation capability. The validity of the theoretical findings is confirmed via extensive simulations of the entire transmit/receive processing chain.

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Section: Introductionmentioning

confidence: 67%

Self-Interference Distribution over Full-Duplex Multi-User MIMO Channels

Shojaeifard

Wong

Renzo

et al. 2017

2017 IEEE Wireless Communications and Networking Conference (WCNC)

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“…In order to simplify the derivations, the interference caused by uplink transmission to downlink MSs was ignored in [14] and [15]. On the other hand, the interference caused by uplink transmission to downlink MSs is considered in [16]- [19].…”

Section: Introductionmentioning

confidence: 99%

MIMO Full-Duplex Precoding: A Joint Beamforming and Self-Interference Cancellation Structure

Huberman

Le‐Ngoc

2015

IEEE Trans. Wireless Commun.

103

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This paper presents a single-or multi-user MultipleInput-Multiple-Output (MIMO) Full-Duplex (FD) precoding transceiver structure applicable for single-carrier and Orthogonal Frequency Division Multiplexing (OFDM) systems. The structure increases the dimensionality at the transmitter, which allow for the cancellation of self-interference and forward beamforming to be jointly processed using precoding at the transmitter. The FD Precoding (FDP) structure allows for various joint precoding algorithms and different optimization objectives. We present separate and joint precoding designs for sum-rate maximization and a theoretical analysis of when the separate design is optimal. The joint designs make use of Sequential Convex Programming (SCP). Extensive simulation results using both channel models and measured data show that the FDP structure can provide very significant performance gains over existing techniques for both SU-and MU-MIMO systems. In particular, the FDP structure provides between 1.6 and 1.8 times the spectral efficiency of optimized half-duplex for many of the tested SU-MIMO scenarios.

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“…It should be noted that the proposed alignment-based precoder differs from the extended ZF scheme in [10] and subsequent works where 'allzero' streams are transmitted for SI cancellation purposes. In addition, the linear ZF decoder at the l-th BS, which eliminates multi-user interference in the UL, is constructed with the normalized rows of H…”

Section: Baseband Signals Representationsmentioning

confidence: 99%

“…For example, the authors in [9] have shown that the FD functionality in the context of baseline single-input single-output (SISO) cellular networks can result in the doubling of the DL rate at the cost of over a thousand-fold deduction in the UL rate. A potential solution can be to exploit massive MIMO for better resilience against SI and cross-mode interference as highlighted in [10] and [11], which focus on a single-cell LSAS scenario.…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of Full-Duplex Massive MIMO Cellular Networks

Shojaeifard

Wong

Renzo

et al. 2016

2016 IEEE Globecom Workshops (GC Wkshps)

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Abstract-This paper provides a theoretical framework for the study of full-duplex (FD) massive multiple-input multiple-output (MIMO) cellular networks over Rician self-interference (SI) and Rayleigh intended and other-interference fading channels. To facilitate bi-directional wireless functionality, we incorporate (i) a downlink (DL) linear zero-forcing with self-interferencenulling (ZF-SIN) precoding scheme at the FD base stations (BSs), and (ii) an uplink (UL) self-interference-aware (SIA) fractional power control mechanism at the FD user equipments (UEs). Linear ZF receivers are further utilized for signal detection in the UL. The results indicate that the UL rate bottleneck in the baseline FD single-antenna system can be elevated by several hundred times via exploiting massive MIMO. On the other hand, the findings may be viewed as a reality-check as the largest spectral efficiency gain from the FD massive MIMO cellular network over its half-duplex (HD) counterpart under state-ofthe-art system parameters is shown to be in the region of ∼40%. I. INTRODUCTIONMassive multiple-input multiple-output (MIMO) is considered a de facto technology for the emerging fifth-generation (5G) cellular networks [1], [2]. The distinguishing characterstic of this type of deployment -also known as large scale antenna system (LSAS) -is that the base stations (BSs) equipped with hundreds of antennas communicate with multiple user equipments (UEs) over the same time/frequency bins. Massive MIMO cellular networks, via multiplexing multiple terminals and directing power where it is needed, are thus capabe of achieving much higher spectral and energy efficiencies over the existing long-term-evolution (LTE) standards [3].Another candidate technology for the next generation of wireless systems involves the simultaneous transmission and reception of information over the same radio resources, i.e., full-duplex (FD) communications [4]. This approach has in the past been deemed as practically infeasible due to the overwhelming self-interference (SI) which arises due to the bidirectional functionality. The rapid advancements in the family of techniques used for mitigating SI has however rendered the practical application of FD increasingly more viable, see, e.g., [5] for information on real-time point-to-point FD prototypes.The large scale adoption of full-duplexing, e.g., in the context of cellular networks, is however not straightforward and largely remains in its infancy. The main challenge lies in the introduction of SI as well as cross-mode interference

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Full-duplex in large-scale wireless systems

Cited by 61 publications

References 17 publications

Self-Interference Distribution over Full-Duplex Multi-User MIMO Channels

Self-Interference Distribution over Full-Duplex Multi-User MIMO Channels

MIMO Full-Duplex Precoding: A Joint Beamforming and Self-Interference Cancellation Structure

Design and Analysis of Full-Duplex Massive MIMO Cellular Networks

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