Full-duplex mobile device: pushing the limits

Korpi, Dani; Tamminen, Joose; Turunen, Matias; Huusari, Timo; Choi, Yang-Seok; Anttila, Lauri; Talwar, Shilpa; Valkama, Mikko

doi:10.1109/mcom.2016.7565192

Cited by 188 publications

(103 citation statements)

References 16 publications

Supporting

Mentioning

103

Contrasting

Order By: Relevance

“…To enable IBFD, the most crucial issue is to mitigate the self-interference (SI) caused by the transmitter to its co-located receiver. Among various approaches proposed in the literature, a closed-loop multi-tap filter is proved as the most effective one in the radio frequency (RF) domain especially for wideband applications [3]. This multi-tap adaptive filter can be implemented in the analog domain by employing least mean square (LMS) principle.…”

Section: Introductionmentioning

confidence: 99%

Cyclostationary Analysis of Analog Least Mean Square Loop for Self-Interference Cancellation in In-Band Full-Duplex Systems

Tran

Huang

2017

IEEE Commun. Lett.

View full text Add to dashboard Cite

Analog least mean square (ALMS) loop is a promising mechanism to suppress self-interference (SI) in an inband full-duplex (IBFD) system. In this letter, a general solution for the weighting error function is derived to investigate the performance of the ALMS loop employed in any IBFD system. The solution is then applied to IBFD systems with single carrier and multi-carrier signaling respectively. It is shown that due to the cyclostationary property of the transmitted signal, the weighting error function in the multi-carrier system varies more significantly than that in the single carrier one. Therefore, if the ALMS loop can perfectly mimic the SI channel, SI in the single carrier system can be suppressed to a much smaller level than that in the multicarrier counterpart. Abstract-Analog least mean square (ALMS) loop is a promising mechanism to suppress self-interference (SI) in an in-band full-duplex (IBFD) system. In this letter, a general solution for the weighting error function is derived to investigate the performance of the ALMS loop employed in any IBFD system. The solution is then applied to IBFD systems with single carrier and multi-carrier signaling respectively. It is shown that due to the cyclostationary property of the transmitted signal, the weighting error function in the multi-carrier system varies more significantly than that in the single carrier one. Therefore, if the ALMS loop can perfectly mimic the SI channel, SI in the single carrier system can be suppressed to a much smaller level than that in the multi-carrier counterpart. Disciplines Engineering | Science and Technology Studies

show abstract

Section: Introductionmentioning

confidence: 99%

Cyclostationary Analysis of Analog Least Mean Square Loop for Self-Interference Cancellation in In-Band Full-Duplex Systems

Tran

Huang

2017

IEEE Commun. Lett.

View full text Add to dashboard Cite

show abstract

“…If f Y a i (y a i ; θ ) and f Y a i (y a i ; θ ) are equal ∀y a i , they should also be equal for y a i = θ(1)x a i + θ(2)x 1 . In this case, we have…”

Section: Appendixmentioning

confidence: 99%

“…Consequently, for (21) to hold for ∀y a i , the coefficient of x a i should be zero, i.e., θ (1) = θ (1). Knowing that θ (1) = θ(1) and equating (19) and (20), we have…”

Section: Appendixmentioning

confidence: 99%

Superimposed signaling inspired channel estimation in full-duplex systems

Koohian

Mehrpouyan

Nasir

et al. 2018

EURASIP J. Adv. Signal Process.

View full text Add to dashboard Cite

Residual self-interference (SI) cancellation in the digital baseband is an important problem in full-duplex (FD) communication systems. In this paper, we propose a new technique for estimating the SI and communication channels in a FD communication system, which is inspired from superimposed signaling. In our proposed technique, we add a constant real number to each constellation point of a conventional modulation constellation to yield asymmetric shifted modulation constellations with respect to the origin. We show mathematically that such constellations can be used for bandwidth efficient channel estimation without ambiguity. We propose an expectation maximization (EM) estimator for use with the asymmetric shifted modulation constellations. We derive a closed-form lower bound for the mean square error (MSE) of the channel estimation error, which allows us to find the minimum shift energy needed for accurate channel estimation in a given FD communication system. The simulation results show that the proposed technique outperforms the data-aided channel estimation method, under the condition that the pilots use the same extra energy as the shift, both in terms of MSE of channel estimation error and bit error rate. The proposed technique is also robust to an increasing power of the SI signal.

show abstract

“…In-band FD or simultaneous data transmission and reception will provide a 1000-fold increase in throughput [131,240], double spectral efficiency [132,240], and reduce the air interface delay [240]. The central research problem for the practical implementation of an in-band full-duplex radio is the attenuation of the self-interference signal by an adequate amount [132].…”

Section: Duplexingmentioning

confidence: 99%

IoT’s Tiny Steps towards 5G: Telco’s Perspective

Cero¹,

Husić

Baraković

2017

Symmetry

View full text Add to dashboard Cite

Abstract:The numerous and diverse applications of the Internet of Things (IoT) have the potential to change all areas of daily life of individuals, businesses, and society as a whole. The vision of a pervasive IoT spans a wide range of application domains and addresses the enabling technologies needed to meet the performance requirements of various IoT applications. In order to accomplish this vision, this paper aims to provide an analysis of literature in order to propose a new classification of IoT applications, specify and prioritize performance requirements of such IoT application classes, and give an insight into state-of-the-art technologies used to meet these requirements, all from telco's perspective. A deep and comprehensive understanding of the scope and classification of IoT applications is an essential precondition for determining their performance requirements with the overall goal of defining the enabling technologies towards fifth generation (5G) networks, while avoiding over-specification and high costs. Given the fact that this paper presents an overview of current research for the given topic, it also targets the research community and other stakeholders interested in this contemporary and attractive field for the purpose of recognizing research gaps and recommending new research directions.

show abstract

Full-duplex mobile device: pushing the limits

Cited by 188 publications

References 16 publications

Cyclostationary Analysis of Analog Least Mean Square Loop for Self-Interference Cancellation in In-Band Full-Duplex Systems

Cyclostationary Analysis of Analog Least Mean Square Loop for Self-Interference Cancellation in In-Band Full-Duplex Systems

Superimposed signaling inspired channel estimation in full-duplex systems

IoT’s Tiny Steps towards 5G: Telco’s Perspective

Contact Info

Product

Resources

About