Results 31 to 40 of about 798,977 (204)

Performance Analysis of Scalable User-Centric HC-RAN Over Rician Fading Channels

open access: yesIEEE Access, 2023
In this paper, we analyze the uplink performance of a scalable user-centric heterogeneous cloud-radio access network (HC-RAN) implemented by using dynamic cooperative clustering (DCC) framework over a Rician fading channel with phase shifts. This channel
Hareesh Ayanampudi, Ravindra Dhuli
doaj   +1 more source

Closed-form Distribution and Analysis of a Combined Nakagami-lognormal Shadowing and Unshadowing Fading Channel

open access: yesJournal of Telecommunications and Information Technology, 2016
The realistic wireless channels face combined (time shared) Nakagami-lognormal shadowing and unshadowing fading because of time varying nature of radio channel and mobile user.
Rupender Singh, Meenakshi Rawat
doaj   +1 more source

Concatenation of Space-Time Block Codes and Turbo Trellis Coded Modulation (ST-TTCM) Over Rician Fading Channels With Imperfect Phase Reference

open access: yesElectrica, 2019
In this paper, the performance of Space-Time - Turbo Trellis Coded Modulation (ST-TTCM) is evaluated over Rician fading channels with imperfect phase reference.
Osman N. UCAN
doaj   +2 more sources

Downlink Transmission of Multicell Distributed Massive MIMO With Pilot Contamination Under Rician Fading

open access: yesIEEE Access, 2020
In this paper, we investigate the spectral efficiency (SE) of a multicell downlink (DL) distributed massive MIMO (DM-MIMO) system with pilot contamination operating over Rician fading channels in which each remote access unit (RAU) is equipped with a ...
Meng Wang, Dian-Wu Yue, Si-Nian Jin
doaj   +1 more source

SubDIVIDE: Efficient tensor‐valued diffusion magnetic resonance imaging via joint diffusional variance decomposition modeling and subspace reconstruction

open access: yesJournal of Intelligent Medicine, EarlyView.
SubDIVIDE integrates a physics‐consistent DIVIDE subspace directly into MRI reconstruction. By embedding a low‐rank basis derived from a large DIVIDE signal dictionary into a joint ADMM optimization—together with composite sensitivity maps that absorb inter‐b‐value phase errors—the framework recovers quantitative microstructural maps from highly ...
Cheng Yang   +4 more
wiley   +1 more source

LDPC concatenated space-time block coded system in multipath fading environment: Analysis and evaluation [PDF]

open access: yesMaejo International Journal of Science and Technology, 2011
Irregular low-density parity-check (LDPC) codes have been found to show exceptionally good performance for single antenna systems over a wide class of channels. In this paper, the performance of LDPC codes with multiple antenna systems is investigated in
Surbhi Sharma
doaj  

Performance Analysis of Hybrid Protocol Based AF EH Relaying over Asymmetric Fading Channels

open access: yesInformation, 2019
Simultaneous wireless information and power transfer is a practicable solution to encourage energy-constrained relay nodes to cooperate with the source to transmit information to the destination.
Xutao Sheng   +3 more
doaj   +1 more source

Reference‐Superimposed Reconstruction (RS‐Recon) for Arterial Spin Labeling

open access: yesMagnetic Resonance in Medicine, EarlyView.
ABSTRACT Purpose Conventional arterial spin labeling (ASL) reconstruction suffers from sign‐flipping errors and/or noise bias under strong background suppression (BS), limiting SNR optimization. We propose reference‐superimposed reconstruction (RS‐recon) to enable ideal BS and robust signal recovery.
Jia Guo
wiley   +1 more source

Blind Joint Soft-Detection Assisted Slow Frequency-Hopping Multicarrier DS-CDMA [PDF]

open access: yes, 2000
A novel multiple-access scheme based on slow frequency-hopping multicarrier direct-sequence, code-division multiple access (SFH/MC DS-CDMA) is proposed and investigated, which can be rendered compatible with the existing second-generation narrow-band ...
Yang, L-L., Hanzo, L.
core   +2 more sources

IRS-Assisted Full Duplex Systems Over Rician and Nakagami Fading Channels

open access: yesIEEE Open Journal of Vehicular Technology, 2023
Intelligent reflecting surface (IRS) has been deemed as an energy and spectral-efficient technology, that can potentially enhance network coverage and transmission reliability, with minimum impact on transceivers' complexity. Motivated by this, we
Suyue Li   +4 more
doaj   +1 more source

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