Results 11 to 20 of about 169,690 (256)
Space-time network coding [PDF]
IEEE 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
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Layered Space-Time Index Coding [PDF]
IEEE 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
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Cooperative space-time codes with network coding [PDF]
EURASIP 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
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Space–Time Codes From Sum-Rank Codes [PDF]
IEEE Transactions on Information Theory, 2022 Just as rank-metric or Gabidulin codes may be used to construct rate-diversity tradeoff optimal space-time codes, a recently introduced generalization for the sum-rank metric -- linearized Reed-Solomon codes -- accomplishes the same in the case of multiple fading blocks.
Mohannad Shehadeh, Frank R. Kschischang
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On the Existence of Perfect Space–Time Codes [PDF]
IEEE Transactions on Information Theory, 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. In this correspondence, we discuss the existence of such codes (or more precisely, the existence of perfect codes with ...
Berhuy, Grégory +1 more
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Systematic Design of Space-Time Trellis Codes for Diversity and Coding Advantages
EURASIP 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
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Space-time-coding digital metasurfaces [PDF]
Nature 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
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Generalized PSK in Space–Time Coding [PDF]
IEEE Transactions on Communications, 2005 A wireless communication system using multiple antennas promises reliable transmission under Rayleigh flat fading assumptions. Design criteria and practical schemes have been presented for both coherent and non-coherent communication channels. In this paper we generalize one dimensional phase shift keying (PSK) signals and introduce space time ...
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Space-Time Codes for Wireless Optical Communications
EURASIP Journal on Advances in Signal Processing, 2002 A space-time channel coding technique is presented for overcoming turbulence-induced fading in an atmospheric optical heterodyne communication system that uses multiple transmit and receive apertures. In particular, a design criterion for minimizing the
Tarokh Vahid +2 more
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IEEE Access, 2018 This paper characterizes rate-one (i.e., full rate) full-spatial-diversity-achieving communication schemes based on the channel state information (CSI) availability and antenna configurations, i.e., CSI at a transmitter (CSIT) or CSI at a receiver (CSIR) and the numbers of transmit and receive antennas $M$ and $N$ (denoted by $M\times N$
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