Results 21 to 30 of about 18,511,103 (281)

Layered Steered Space-Time Codes and their capacity

open access: yes, 2007
A capacity analysis of a multifunctional multiple-input multiple-output system that combines the benefits of vertical Bell Labs space-time scheme, space-time block codes and beamforming is ...
M. El-Hajjar   +3 more
core   +2 more sources

Efficiency Improvement of Space Time Block Codes

open access: yesInternational Journal of Communications, Network and System Sciences, 2010
Unlike most of the existing methods in Space Time coding (STC) system which focus on design of STC gaining full rate and/or maximum diversity, we propose an approach to improve spectral efficiency of the code. The proposed scheme carries more information symbols in each transmission block as compared to its counterpart code, and yet retains the ...
Zahoor Ahmed Baloch   +2 more
openaire   +2 more sources

On permutation of space‐time‐frequency block codings

open access: yesIET Communications, 2014
Multi‐input multi‐output‐orthogonal frequency‐division multiplexing is the foundation of next generation of wireless communication systems and space‐time‐frequency block coding (STFBC) is considered one of the best schemes for implementing these systems. STFBCs have very complex structures and many parameters affect their performance.
Alireza Morsali, Siamak Talebi
openaire   +2 more sources

Structured Dispersion Matrices From Division Algebra Codes for Space-Time Shift Keying [PDF]

open access: yes, 2013
We propose a novel method of constructing Dispersion Matrices (DM) for Coherent Space-Time Shift Keying (CSTSK) relying on arbitrary PSK signal sets by exploiting codes from division algebras. We show that classic codes from Cyclic Division Algebras (CDA)
Hari, KVS   +4 more
core   +2 more sources

Performance assessment of orthogonal space‐time block codes in Nakagami‐m/inverse Gaussian fading MIMO channels

open access: yesIET Communications, 2021
This paper evaluates the performance of multiple‐input multiple‐output systems with orthogonal space‐time block code transmit diversity technique experiencing over G composite fading channels.
Bibhuti Bhusan Pradhan   +2 more
doaj   +1 more source

Peripheral lysosomes recruit PLEKHG3 to focal adhesions and restrain protrusion dynamics

open access: yesFEBS Letters, EarlyView.
Proximity‐dependent labeling at the LAMTOR complex revealed the Rho GEF PLEKHG3 as a lysosome‐proximal protein directing the study toward the influence of lysosome positioning on actin dynamics and cell motility. We show that PLEKHG3 colocalizes with lysosomes at focal adhesion sites and observe that forced peripheral dispersion of lysosomes hinders ...
Rainer Ettelt   +8 more
wiley   +1 more source

Perfect space-time block codes and high performance decoding algorithm

open access: yesTongxin xuebao, 2007
Based on the structure of perfect space-time block codes(STBC),an equivalent vertical Bell Laboratories layered space-time(V-BLAST) decoding model was given.Minimum mean-square error decision feedback equalizer(MMSE-DFE) was used to preprocess this model
HU Jun-feng1, YANG Yuan1, ZHANG Hai-lin1
doaj   +2 more sources

Engineering peptides into antibodies—opportunities and strategies for therapeutic innovation

open access: yesFEBS Letters, EarlyView.
Peptides and antibodies occupy complementary therapeutic niches. Peptides recognize difficult targets in a compact format, while antibodies add specificity, long half‐life, and effector functions. This review examines strategies that merge both modalities—peptide grafting into loops, terminal and Fc fusions, and bioconjugation—highlighting how ...
Jinling Wang   +2 more
wiley   +1 more source

Block turbo codes for space-time systems

open access: yesGlobecom '00 - IEEE. Global Telecommunications Conference. Conference Record (Cat. No.00CH37137), 2002
Advances in the field of information theory have shown that wireless systems using multiple transmitters and multiple receivers can significantly improve the spectral efficiency. Systems using transmit and receive diversity associated with coding such as space time trellis codes have since been developed.
Amis Cavalec, Karine, Pyndiah, Ramesh
openaire   +3 more sources

Golgi enzymes are retrieved from the plasma membrane to the trans‐Golgi network

open access: yesFEBS Letters, EarlyView.
Golgi enzymes are traditionally considered resident proteins retained within the Golgi apparatus. Here, we demonstrate that a subset transiently reaches the cell surface and is subsequently retrieved to the trans‐Golgi network via retrograde transport. Using a nanobody‐based toolkit, we uncover a dynamic trafficking cycle of several Golgi enzymes.
Dominik P. Buser, Tina Junne
wiley   +1 more source

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