Self-interference mitigation in full-duplex base-station using dual polarized reflect-array

Zarifeh, Nidal; Alissa, Mai; Khaliel, Maher; Kaiser, Thomas

doi:10.23919/gemic.2018.8335059

Cited by 19 publications

(3 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The passive suppression is demonstrated in the FD mutual antenna transceiver architecture through the isolating RF circulator, where it achieves between (15-30 dB) of suppression [2]. Passive suppression in the separate antenna architecture can be achieved by implementing cross-polarization [3]- [7], directional isolation [4]- [6], antenna conditional placement [7]- [13], or absorptive/ reflective shielding [5], [9], [11]. The suppression efficiency of each of these mechanisms depends on the physical restrictions of the system.…”

Section: A Self-interference Cancellationmentioning

confidence: 99%

See 1 more Smart Citation

Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation

et al. 2019

Self Cite

View full text Add to dashboard Cite

Full-Duplex (FD) is an emerging technology that allows the communication device to use the same frequency to simultaneously transmit and receive. The cancellation of the high power Self-Interference (SI) is the main challenge in FD systems. Hybrid SI mitigation and cancellation schemes in propagation, analog, and digital domains, have to be used in order to mitigate the SI. Antenna selection (AS) can be employed to select the best antenna, or set of antennas, that guarantees jointly the maximization of the desired signal, and the minimization of SI. In this paper, we aim to experimentally enable FD transmission in an indoor femto base-station (BS) with antenna selection. Receive antenna selection is combined with cross-polarization and antennas conditional placement in order to achieve the required SI cancellation. Half-duplex (HD) Uplink (UL) user-equipments (UE) are used to measure the effect of downlink (DL) SI on the UL reception at the FD BS receiver. Different scenarios are experimented in the testbed such as, changing the number of antennas, the type of isolation (vertical/horizontal), and the type of antennas (Omnidirectional/directional). Three AS criteria are used, and the performance of the system is evaluated in terms of bit-error-rate, sum-rate, residual SI, and FD/HD sum-rate enhancement ratio. The measurement results show that the proposed hybrid solution is feasible to enable FD transmission in the considered scenario.

show abstract

Section: A Self-interference Cancellationmentioning

confidence: 99%

“…Recently, beam-forming with massive MIMO is considered in many papers like [26]- [28]. The work in [4] is using dual-polarized reflect-arrays with spatial isolation to mitigate the SI. Generally, besides scalability, all multi-antenna SIC techniques still need further development and face a lot of challenges.…”

Section: B Multi-antenna Full-duplex Systemmentioning

confidence: 99%

Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…To successfully suppress this self-interference, different active and passive suppression methods have been considered including antenna separation, placing absorbers between antenna elements, using circulators combined with analog cancellation tools, and antenna orientation [4][5][6][7][8]. The authors in [9][10][11] also considered dual polarization antennas structure to mitigate the self-interference. Another technique uses a near-field resonator or coupling element to enhance the isolation between antenna elements [12,13].…”

Section: Introductionmentioning

confidence: 99%

Differential-Fed Log-Periodic Dipole Array With High Isolation for Wideband Full-Duplex Communications

Nguyen¹,

Karacolak²

2021

PIER C

View full text Add to dashboard Cite

This study presents a differentially driven log-periodic dipole array system with high isolation between reception and transmission ports for wideband full-duplex applications. The antenna system is composed of two pairs of log-periodic dipole arrays operating in the X-band spectrum from 8 GHz to 12 GHz. The system offers a low cross-polarization between E-plane and H-plane (less than −25 dB). The simulation results show high isolation S 21 < −60 dB through the entire X-band while the measured results reach S 21 < −45 dB in a reflective lab room. Furthermore, in order to verify the measured values, a modified 180 • out-of-phase wideband power divider is used to feed transmitting and receiving ports. The second measured outcomes also attain total isolation greater than 45 dB for the entire band of interest. The proposed design is able to cover both orthogonal transmitted and received directions with reasonable gain values, high efficiency, and good impedance matching.

show abstract

Development of microstrip reflectarray based monostatic STAR antenna

2021

AEU - International Journal of Electronics and Communications

View full text Add to dashboard Cite

Self-interference mitigation in full-duplex base-station using dual polarized reflect-array

Abstract: This text is provided by DuEPublico, the central repository of the University Duisburg-Essen.

Cited by 19 publications

References 15 publications

Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation

Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation

Differential-Fed Log-Periodic Dipole Array With High Isolation for Wideband Full-Duplex Communications

Development of microstrip reflectarray based monostatic STAR antenna

Contact Info

Product

Resources

About