Zobrazeno 1 - 10
of 50
pro vyhledávání: '"Robert Morawski"'
Perturbation-Based Nulling Control Beamforming With Measured Element Radiation Patterns for MU-mMIMO
Publikováno v:
IEEE Open Journal of Vehicular Technology, Vol 5, Pp 1273-1293 (2024)
A perturbation-based nulling control beamforming (PNCB) scheme is proposed to effectively mitigate multi-user interference (MUI) in multi-user massive multiple-input multiple-output (MU-mMIMO) systems. This is achieved through the precise alignment o
Externí odkaz:
https://doaj.org/article/935842ffd79d44538b89487af749503c
Publikováno v:
IEEE Access, Vol 12, Pp 64571-64588 (2024)
This paper presents a novel metamaterial absorber structure for Tx-Rx antenna isolation improvement in the in-band full-duplex massive MIMO systems. The design processes of the absorber unit element, structure and placement, and their impacts on the
Externí odkaz:
https://doaj.org/article/7340f029085b4763ae09336d3f48f529
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 2268-2286 (2024)
This paper presents a novel approach to full-duplex (FD) massive multiple-input multiple-output (mMIMO) systems using hybrid beamforming (HBF) architecture, enabling simultaneous uplink (UL) and downlink (DL) transmission within the same frequency ba
Externí odkaz:
https://doaj.org/article/f7d950cea8ee492e87b7a066a2cfbd1e
Autor:
Tho Le-Ngoc, Yuanzhe Gong, Mobeen Mahmood, Asil Koc, Robert Morawski, James Gary Griffiths, Philippe Guillemette, Jamal Zaid, Peiwei Wang
Publikováno v:
IEEE Open Journal of Vehicular Technology, Vol 5, Pp 560-576 (2024)
In-band full-duplex (FD) operation can double the spectral efficiency of massive multiple-input multiple-output (mMIMO) systems by allowing simultaneous transmission and reception over the same time/frequency slot. However, the main challenge encount
Externí odkaz:
https://doaj.org/article/f4cc31e928124a45ba6e3291baaa9370
Publikováno v:
IEEE Access, Vol 11, Pp 135708-135727 (2023)
This paper presents a prototype pair of dual-layer electromagnetic bandgap slotted circularly polarized patch $8\times 8$ Tx/ $8\times 8$ Rx orthogonally-polarized antenna arrays designed for in-band full-duplex massive MIMO. The design processes of
Externí odkaz:
https://doaj.org/article/8fcb66a6b446437f870e4913cd7a9f26
Publikováno v:
IEEE Access, Vol 9, Pp 145115-145132 (2021)
This paper presents a novel channel estimation technique for the multi-user massive multiple-input multiple-output (MU-mMIMO) systems using angular-based hybrid precoding (AB-HP). The proposed channel estimation technique generates group-wise channel
Externí odkaz:
https://doaj.org/article/d2d914d7a86e4bccaa6d3dae847f7461
Autor:
Izabela Bronikowska, Elżbieta Świętochowska, Robert Morawski, Wojciech Ścierski, Eugeniusz Czecior
Publikováno v:
Otolaryngologia Polska. 77:1-5
SummaryPurpose. The aim of the study was to evaluate serum concentrations of total sialic acids (TSA) in patients with squamous cell carcinoma of the larynx preoperatively and 4 years postoperatively and to compare the results with the serum concentr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e24aa1cfbfd56bd953857e46e9c09445
https://doi.org/10.5604/01.3001.0016.1094
https://doi.org/10.5604/01.3001.0016.1094
Publikováno v:
Acta Oto-Laryngologica. 142:532-536
Markers of tumorigenesis are essential factors which may play a major role in the early detection of head and neck carcinoma.To assess concentration of HIF-1, GLUT1 and VEGF in tissue samples and blood serum and its correlation to the tumour size, no
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2191667dbc368586ba97323e6f4d6ec7
https://doi.org/10.1080/00016489.2022.2085885
https://doi.org/10.1080/00016489.2022.2085885
Publikováno v:
GLOBECOM 2022 - 2022 IEEE Global Communications Conference.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9606a197813de83666d389eb48c16bb7
https://doi.org/10.1109/globecom48099.2022.10001232
https://doi.org/10.1109/globecom48099.2022.10001232
Publikováno v:
IEEE Access, Vol 9, Pp 145115-145132 (2021)
This paper presents a novel channel estimation technique for the multi-user massive multiple-input multiple-output (MU-mMIMO) systems using angular-based hybrid precoding (AB-HP). The proposed channel estimation technique generates group-wise channel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dc7e36d1f8bccca6034ddb94b2ecc3b
https://doi.org/10.1109/access.2021.3121750
https://doi.org/10.1109/access.2021.3121750