2‐bit polarisation agile antenna with high port decoupling

Wolosinski, Grzegorz; Fusco, Vincent; Malyuskin, Oleksandr

doi:10.1049/el.2015.3701

Cited by 8 publications

(4 citation statements)

References 6 publications

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“…Hence, the polarization vectors at polarization reconfigurable antenna elements impact constructively or destructively the MIMO channel capacity itself, even though SVD-based precoding/postcoding reaches the MIMO channel capacity for the given full CSIR/CSIT. The jth Tx polarization-agile antenna affects the jth column in (1); thus, the sum of squared singular values in (10) can be written as…”

Section: Polarization Pre-post Coding At the Polarization Reconfigura...mentioning

confidence: 99%

Antenna Selection in Polarization Reconfigurable MIMO (PR-MIMO) Communication Systems

Oh¹,

Kwon²,

Molisch³

2021

Preprint

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Adaptation of a wireless system to the polarization state of the propagation channel can improve reliability and throughput. This paper in particular considers polarizationreconfigurable multiple-input -multiple-output (PR-MIMO) systems, where both transmitter and receiver can change the (linear) polarization orientation at each element of their antenna arrays. We first introduce joint polarization pre-post coding to maximize bounds on the capacity and the maximum eigenvalue of the channel matrix. For this we first derive approximate closed form equations of optimal polarization vectors at one link end, and then use iterative joint polarization pre-post coding to pursue joint optimal polarization vectors at both link ends. Next we investigate the combination of PR-MIMO with hybrid antenna selection / maximum ratio transmission (PR-HS/MRT), which can achieve a remarkable improvement of channel capacity and symbol error rate (SER). Further, two novel schemes of elementwise and global polarization reconfiguration are presented for PR-HS/MRT. Comprehensive simulation results indicate that the proposed schemes provide 3 -5 dB SNR gain in PR-MIMO spatial multiplexing and approximately 3 dB SNR gain in PR-HS/MRT, with concomitant improvements of channel capacity and SER.

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Section: Polarization Pre-post Coding At the Polarization Reconfigura...mentioning

confidence: 99%

Antenna Selection in Polarization Reconfigurable MIMO (PR-MIMO) Communication Systems

Oh¹,

Kwon²,

Molisch³

2021

Preprint

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show abstract

“…In the following we refer to the mode-based technique applied to a four-element antenna with circular symmetry [3]. The scattering matrix Sa of such antenna features circulant structure thus it is completely characterized by S11, S12, and S13.…”

Section: Mode-based Mimo Antenna Designmentioning

confidence: 99%

“…The most effective schemes aimed to reduce both mutual coupling and spatial correlation in physically constrained antenna systems are polarization and pattern diversity. Recently, these diversity schemes have been separately implemented by means of the mode-based technique [3]- [4]. This technique allows to diagonalize the scattering matrix of a multi-element antenna with circular symmetry by cascading a mode decomposition network (MDN) to the antenna ports.…”

Section: Introductionmentioning

confidence: 99%

Mode-Based MIMO Antenna with Polarization and Pattern Diversity for Base Station Applications

Wolosinski

Fusco

Rulikowski

2018

2018 IEEE International Symposium on Antennas and Propagation &Amp; USNC/URSI National Radio Science Meeting

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“…In contrast to the above literature, in [16] we exploited the eigenmode decomposition technique to achieve polarization diversity without the use of matching networks allowing reduction implementation complexity and enabling greater operating bandwidth. To generalize this work, in [17] we have proposed an antenna based on a new eigenmode design procedure which can achieve both polarization and pattern diversity without the use of matching networks.…”

Section: Introductionmentioning

confidence: 99%

Pre-matched Eigenmode Antenna With Polarization and Pattern Diversity

Wolosinski

Fusco

Naeem

et al. 2019

IEEE Trans. Antennas Propagat.

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In this paper we propose an antenna design procedure based on the eigenmode decomposition technique which avoids the use of the external matching networks that are typically required at the input ports of the mode decomposition network (MDN). We illustrate the technique by examining the properties of a circularly symmetrical 4-port antenna configuration which can achieve four orthogonal radiation patterns or eigenpatterns and that allows both polarization and pattern diversity. We then use the proposed theory to design an actual antenna structure with eigenmodes operating around 2.6 GHz and whose eigenpatterns are directed in one hemisphere. The antenna and an example MDN are manufactured and tested showing that the four eigenmodes can simultaneously operate in 9.5 % of bandwidth (RL > 10 dB) with a worst case total radiation efficiency of 72 %, correlation coefficient of 0.04, and port coupling of-24 dB. Finally, we use the measured results to assess the antenna in a Multiple-Input-Multiple-Output (MIMO) communication system and demonstrate its beam-tilting capability.

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2‐bit polarisation agile antenna with high port decoupling

Cited by 8 publications

References 6 publications

Antenna Selection in Polarization Reconfigurable MIMO (PR-MIMO) Communication Systems

Antenna Selection in Polarization Reconfigurable MIMO (PR-MIMO) Communication Systems

Mode-Based MIMO Antenna with Polarization and Pattern Diversity for Base Station Applications

Pre-matched Eigenmode Antenna With Polarization and Pattern Diversity

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