Results 11 to 20 of about 244,635 (305)

Cooperative space-time codes with network coding [PDF]

open access: yesEURASIP Journal on Wireless Communications and Networking, 2012
Because of the gains like diversity, throughput, and the coverage extension provided by the multiple-input multiple-out (MIMO) systems, it has been part of the various wireless communications standards. However, to reap the benefits offered by MIMO systems in size-constrained nodes, used in wireless communications, has been a challenging issue.
Gordhan Das Menghwar   +4 more
openaire   +1 more source

Space-Time Frequency Block Codes in LTE-DSRC Hybrid Vehicular Networks

open access: yesInternational Journal of Technology, 2022
In vehicular communication systems, Dedicated Short Range Communication (DSRC) is said to provide fast communication and high security between vehicles. Simultaneously, Long-Term Evolution (LTE) is used due to its high bandwidth, low latency, and high
Azlan Abd Aziz   +4 more
doaj   +1 more source

Super-Orthogonal Block Codes with Multichannel Equalisation and OFDM in Frequency Selective Fading

open access: yesEURASIP Journal on Wireless Communications and Networking, 2010
Super-orthogonal block codes in space-time domain (i.e., Super-orthogonal space-time trellis codes (SOSTTCs)) were initially designed for frequency nonselective (FNS) channels but in frequency selective (FS) channels these super-orthogonal block codes ...
O. Sokoya, B. T. Maharaj
doaj   +2 more sources

Space-Time Radar Waveforms: Circulating Codes

open access: yesJournal of Electrical and Computer Engineering, 2013
This paper describes a concept of the circulating codes covering the whole class of the space-time codes. The circulating codes do not narrow the radiated pattern of the antenna array, thus providing a wide angular coverage, possibly tunable.
G. Babur, P. Aubry, F. Le Chevalier
doaj   +1 more source

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   +1 more source

Multiple-Symbol Differential Sphere Detection Aided Differential Space-Time Block Codes Using QAM Constellations [PDF]

open access: yes, 2011
We propose Multiple-Symbol Differential Detection (MSDD) aided Differential Space-Time Block Codes (DSTBCs) using QAM. Our solution eliminates the requirement of high-complexity MIMO channel estimation and its pilot overhead, while mitigating the ...
Wang, Li   +7 more
core   +1 more source

New space-time block codes from spectral norm.

open access: yesPLoS ONE, 2019
Current research proposes a natural environment for space-time codes and a new design criterion is obtained for space-time block codes in multi-antenna communication channels.
Carlos A R Martins   +2 more
doaj   +1 more source

Space-time-coding digital metasurfaces [PDF]

open access: yesNature Communications, 2018
AbstractThe recently proposed digital coding metasurfaces make it possible to control electromagnetic (EM) waves in real time, and allow the implementation of many different functionalities in a programmable way. However, current configurations are only space-encoded, and do not exploit the temporal dimension. Here, we propose a general theory of space-
Lei Zhang   +11 more
openaire   +4 more sources

Systematic Design of Space-Time Trellis Codes for Diversity and Coding Advantages

open access: yesEURASIP Journal on Advances in Signal Processing, 2002
The emerging need for high data rate wireless services has raised considerable interest in space-time coding. In this work, we propose a systematic code construction method that jointly considers diversity advantage and coding advantage for an arbitrary ...
Zoltan Safar, K. J. Ray Liu
doaj   +1 more source

Full-Diversity Space-Time Error Correcting Codes with Low-Complexity Receivers

open access: yesEURASIP Journal on Wireless Communications and Networking, 2011
We propose an explicit construction of full-diversity space-time block codes, under the constraint of an error correction capability. Furthermore, these codes are constructed in order to be suitable for a serial concatenation with an outer linear ...
Hassan MohamadSayed, Amis Karine
doaj   +2 more sources

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