Results 21 to 30 of about 18,007,628 (277)
Near-capacity cooperative space-time coding employing irregular design and successive relaying [PDF]
, 2010 In this paper, we develop a capacity-approaching Cooperative Space-Time Coding CSTC scheme employing irregular design for a twin-relay aided network as an extension of our previous work cast in the context of a half-duplex single-relay-aided network. For
Kong, Lingkun +7 more
core +1 more source
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
openaire +2 more sources
Space-Time/Frequency Line Coded OFDM: System Design and Practical Implementation
IEEE Access, 2019 In this paper, we investigate a class of new multiple-input multiple-output (MIMO) transmission schemes, dubbed space time line code (STLC), in the context of different mobility situations.
Chaowu Wu +5 more
doaj +1 more source
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
openaire +2 more sources
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
openaire +3 more sources
High-Rate Redundant Space-Time Coding
Journal of Electrical and Computer Engineering, 2010 We present a new space-time encoder based on packet-level redundancy which can increase the space-time encoder rate beyond unity without compromising diversity gains.
Jawad Manssour +2 more
doaj +1 more source
Perfect Space–Time Block Codes [PDF]
IEEE Transactions on Information Theory, 2006 39 pages, 7 figures, submitted to IEEE Trans. on Inform. Theory Sep.
Frédérique E. Oggier +3 more
openaire +4 more sources
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 ...
openaire +4 more sources
Topology-Aware Space-Time Network Coding in Cellular Networks
IEEE Access, 2018 Space-time network coding (STNC) is a time-division multiple access (TDMA)-based scheme that combines network coding and space-time coding by allowing relay nodes to combine the information received from different source nodes during the transmission ...
Rodolfo Torrea-Duran +4 more
doaj +1 more source
Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system
FEBS Letters, EarlyView.Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley +1 more source