Results 71 to 80 of about 1,206,111 (210)
IEEE AccessThe explosive growth of multimedia traffic over wireless networks demands robust image transmission mechanisms that maintain perceptual quality under channel impairments.
Prabhath Samarathunga +6 more
doaj +1 more source
Distributed Space-Time Block Code over Mixed Rayleigh and Rician Frequency-Selective Fading Channels
EURASIP Journal on Wireless Communications and Networking, 2010 This paper proposes a new distributed space-time block code (DSTBC) over frequency-selective fading channels for two-hop amplify and forward relay networks, consisting of a source node (S), two relay nodes (R1 and R2), and a destination node (D).
Quoc-Tuan Vien +2 more
doaj +1 more source
High‐Resolution Diffusion Kurtosis Imaging of Hippocampus Subfields Across the Healthy Lifespan
NMR in Biomedicine, Volume 39, Issue 8, August 2026.Developmental and aging changes were examined in the hippocampus using 1 mm isotropic diffusion kurtosis imaging in 363 participants aged 5–90 years. HippUnfold enabled automated subfield segmentation and unfolded hippocampal maps. Whole‐hippocampus showed distinct lifespan trajectories: volume, quadratic; MD, negative Gamma Variate; FA, positive Gamma
Pablo Stack‐Sanchez +3 more
wiley +1 more source
, 2005 In this contribution a generalized MC DS-CDMA system invoking smart antennas for improving the achievable performance in the downlink of the system is studied, which is capable of minimizing the downlink interference inflicted upon co-channel mobiles ...
Yang, L-L., Hanzo, L., Hu, B.
core +1 more source
Beamforming Capacity Optimization for Rician MIMO Wireless Channels
IEEE Wireless Communications Letters, 2012 The beamformer that maximizes the ergodic beamforming capacity under correlated (or uncorrelated with non-unit covariance matrix) Rician MISO channels can be calculated in the context of a simple one-dimensional optimization problem, according to the solution proposed in [1].
Dimitris E. Kontaxis +2 more
openaire +3 more sources
HELIOS ‐ Highly rEliable Links durIng sOlar conjunctionS
Radio Science, Volume 61, Issue 8, August 2026.Abstract During deep space missions, maintaining reliable communication between a spacecraft and Earth becomes particularly challenging during superior solar conjunctions, when the spacecraft passes behind the Sun relative to Earth. The highly ionized solar corona and solar wind create plasma inhomogeneities that severely affect radio signals, leading ...
A. Zeqaj +8 more
wiley +1 more source
Electrica, 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
Radio Science, Volume 61, Issue 8, August 2026.Abstract This paper explores the impact of natural phenomena on signal data transmission across various ionospheric communication channels. The study focuses on three primary phenomena: meteor trails prevalent in the middle‐ and lower‐latitude ionosphere, bubble and plume structures observed around the equatorial ionosphere, and magnetic‐storm‐induced ...
I. Bronfman +2 more
wiley +1 more source
Error Probability for Coherent Modulations in Rician Fading Channel
, 2010 Simple closed-form solutions for the average error rate of several coherent modulation schemes including square M-QAM, DBPSK and QPSK operating over slow flat Rician fading channel are derived.
A. Chandra, C. Bose
core +1 more source