Results 11 to 20 of about 18,007,628 (277)

Orthogonal Space Time Block Coding for Spatial Pulse Position Modulation

open access: yesGuangtongxin yanjiu, 2021
The system performance of Spatial Pulse Position Modulation (SPPM) is poor in turbulent channels. In order to solve this problem, the bit complement orthogonal space time Block Coding for Spatial Pulse Position Modulation (BCOSTBCSPPM) is proposed by ...
Zhong-yang MAO   +5 more
doaj   +1 more source

Blind Space Time Block Coding Categorization over AF Relaying Broadcasts

open access: yesApplied Sciences, 2023
Categorization of space time block code (STBC) signals has become widely acknowledged as a crucial foundational mechanism for creating intelligent wireless transmissions in both the governmental and business sectors.
Mohamed Marey, Hala Mostafa
doaj   +1 more source

Joint time-frequency analysis on space-time-coding digital metasurfaces

open access: yesJPhys Photonics, 2022
Space-time and time-varying metastructures have attracted a lot of research interest in recent years. On the other hand, digital programmable metasurfaces have also gained great attention owing to their powerful capabilities in controlling ...
Xiao Qing Chen   +5 more
doaj   +1 more source

High-Resolution and Wide-Swath SAR Imaging with Space–Time Coding Array

open access: yesRemote Sensing, 2023
To achieve high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) images, this paper focuses on resolving the problem of separating range-ambiguous echoes with the space–time coding (STC) array.
Kun Yu, Shengqi Zhu, Lan Lan, Biao Yang
doaj   +1 more source

Space-time network coding [PDF]

open access: yesIEEE Transactions on Signal Processing, 2011
Traditional cooperative communications can improve communication reliability. However, transmissions from multiple relay nodes are challenging in practice. Single transmissions in time-division multiple-access (TDMA) manner cause large transmission delay, but simultaneous transmissions from two or more nodes using frequency-division multiple access ...
Hung-Quoc Lai, K. J. Ray Liu
openaire   +2 more sources

Equivalent-Capacity-Based Design of Space-Time Block-Coded Sphere-Packing-Aided Multilevel Coding [PDF]

open access: yes, 2007
A multilevel coding (MLC) scheme invoking sphere packing (SP) modulation combined with space time block coding (STBC) is designed. The coding rates of each of the MLC component codes are determined using the so-called equivalent capacity based ...
Ng, S.X.   +7 more
core   +2 more sources

Space-variant picture coding [PDF]

open access: yes, 2010
PhDSpace-variant picture coding techniques exploit the strong spatial non-uniformity of the human visual system in order to increase coding efficiency in terms of perceived quality per bit.
Popkin, Timothy John
core   +4 more sources

Enhancing MIMO Capacity Through Space-Time Coding: Analysis And Design Framework

open access: yesJournal of Informatics and Web Engineering, 2023
Space-time coding combines time and space to generate codewords, transmitting signals in both time and space domains. This leads to not only diversity and coding gains but also reduces the impact of multipath fading, resulting in high spectral ...
Lijun Han   +3 more
doaj   +1 more source

Multiple-relay aided distributed turbo coding assisted differential unitary space-time spreading for asynchronous cooperative networks [PDF]

open access: yes, 2010
This paper proposes a cooperative space-time coding (STC) protocol, amalgamating the concepts of asynchronous cooperation, non-coherent detection as well as Distributed Turbo Coding (DTC), where neither symbol-level time synchronization nor CSI ...
S. Sugiura   +9 more
core   +2 more sources

Layered Space-Time Index Coding [PDF]

open access: yesIEEE Transactions on Information Theory, 2018
Multicasting $K$ independent messages via multiple-input multiple-output (MIMO) channels to multiple users where each user already has a subset of messages as side information is studied. A general framework of constructing layered space-time index coding (LSTIC) from a large class of space-time block codes (STBC), including perfect STBC, is proposed ...
Yu-Chih Huang   +3 more
openaire   +5 more sources

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