Results 21 to 30 of about 2,932,730 (333)

Amplification and Manipulation of Nonlinear Electromagnetic Waves and Enhanced Nonreciprocity using Transmissive Space‐Time‐Coding Metasurface

open access: yesAdvancement of science, 2022
A novel amplifier‐based transmissive space‐time‐coding metasurface is presented to realize strongly nonlinear controls of electromagnetic (EM) waves in both space and frequency domains, which can manipulate the propagation directions and adjust ...
Xin Wang   +5 more
semanticscholar   +1 more source

On the existence of perfect space-time codes [PDF]

open access: yes, 2009
Perfect space-time codes are codes for the coherent multiple-input multiple-output (MIMO) channel. They have been called so since they satisfy a large number of design criteria that makes their performances outmatch many other codes.
Berhuy, Grégory, Oggier, Frédérique
core   +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 ...
Mohamad Sayed Hassan, Karine Amis
doaj   +2 more sources

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

Successive interference cancellation schemes for time-reversal space-time block codes [PDF]

open access: yes, 2008
In this paper, we propose two simple signal detectors that are based on successive interference cancellation (SIC) for time-reversal space-time block codes to combat intersymbol interference in frequency-selective fading environments. The main idea is to
Burr, A.G., de Lamare, R.C., Song, L-Y.
core   +1 more source

L2 Orthogonal Space Time Code for Continuous Phase Modulation [PDF]

open access: yes, 2008
To combine the high power efficiency of Continuous Phase Modulation (CPM) with either high spectral efficiency or enhanced performance in low Signal to Noise conditions, some authors have proposed to introduce CPM in a MIMO frame, by using Space Time ...
Deneire, Luc   +2 more
core   +4 more sources

Cooperative differential space-time spreading for the asynchronous relay aided CDMA uplink using interference rejection spreading code [PDF]

open access: yes, 2010
—This letter proposes a differential Space–Time Coding (STC) scheme designed for asynchronous cooperative networks, where neither channel estimation nor symbol-level synchroniza-tion is required at the cooperating nodes.
Chen, Sheng   +2 more
core   +1 more source

Space-Time Multilevel Codes [PDF]

open access: yes2005 IEEE 61st Vehicular Technology Conference, 2005
To date there has been little work done on multilevel codes for the space-time environment. In this paper we develop multi-dimensional space-time multilevel codes (ST-MLCs), which partition the 2N/sub t/-dimensional signalling space that spans all N/sub t/ transmit antennas.
P.A. Martin, D.M. Rankin, D.P. Taylor
openaire   +1 more source

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

High-rate codes that are linear in space and time [PDF]

open access: yes, 2002
Multiple-antenna systems that operate at high rates require simple yet effective space-time transmission schemes to handle the large traffic volume in real time.
Hassibi, Babak, Hochwald, Bertrand M.
core   +2 more sources

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