Results 31 to 40 of about 183,620 (300)
Multinary-Signaling-Based Coded Modulation for Ultrahigh-Speed Optical Transport
IEEE Photonics Journal, 2015 A multinary-signaling-based coded-modulation (CM) scheme is proposed, which is suitable for various applications ranging from multi-Tb/s to multi-Pb/s data rates, outperforming conventional CM schemes in terms of both spectral and energy efficiencies ...
Ivan B. Djordjevic, Tao Liu, Ting Wang
doaj +1 more source
Hybrid neural coded modulation: Design and training methods
ICT Express, 2022 We propose a hybrid coded modulation scheme which composes of inner and outer codes. The outer-code can be any standard binary linear code with efficient soft decoding capability (e.g. low-density parity-check (LDPC) codes).
Sung Hoon Lim +4 more
doaj +1 more source
IEEE Access, 2019 A probabilistic shaping method based on reduced-exponentiation subset indexing and honeycomb-structured constellation optimization is proposed to compress the number of signal points in the constellation, so that the total number doesn't fit the ...
Xiangyu Wu +8 more
doaj +1 more source
, 2013 Network coding (NC) compresses two traffic flows with the aid of low-complexity algebraic operations, hence holds the potential of significantly improving both the efficiency of wireless two-way relaying, where each receiver is collocated with a ...
Cao, Zhigang, Chen, Wei, Hanzo, Lajos
core +1 more source
Bit-Permuted Coded Modulation for Polar Codes [PDF]
2017 IEEE Wireless Communications and Networking Conference Workshops (WCNCW), 2017 We consider the problem of using polar codes with higher order modulation over AWGN channels. Unlike prior work, we focus on using modulation independent polar codes. That is, the polar codes are not re-designed based on the modulation used. Instead, we propose bit-permuted coded modulation (BPCM): a technique for using the multilevel coding (MLC ...
openaire +2 more sources
IEEE Photonics Journal, 2012 We propose a scheme that can attain the same transmission bit rate as the corresponding conventional polarization-division-multiplexed (PDM) quadrature amplitude modulation (QAM) scheme while occupying lower bandwidth and, hence, achieving a higher ...
Murat Arabaci +3 more
doaj +1 more source
Punctured Trellis-Coded Modulation [PDF]
, 2013 In classic trellis-coded modulation (TCM) signal constellations of twice the cardinality are applied when compared to an uncoded transmission enabling transmission of one bit of redundancy per PAM-symbol, i.e., rates of $\frac{K}{K+1}$ when $2^{K+1 ...
Huber, Johannes B. +2 more
core
, 2008 A coded modulation system is considered in which nonbinary coded symbols are mapped directly to nonbinary modulation signals. It is proved that if the modulator-channel combination satisfies a particular symmetry condition, the codeword error rate ...
Flanagan, Mark F.
core +1 more source
An intracellular transporter mitigates the CO2‐induced decline in iron content in Arabidopsis shoots
FEBS Letters, EarlyView.This study identifies a gene encoding a transmembrane protein, MIC, which contributes to the reduction of shoot Fe content observed in plants under elevated CO2. MIC is a putative Fe transporter localized to the Golgi and endosomal compartments. Its post‐translational regulation in roots may represent a potential target for improving plant nutrition ...
Timothy Mozzanino +7 more
wiley +1 more source
Molecular bases of circadian magnesium rhythms across eukaryotes
FEBS Letters, EarlyView.Circadian rhythms in intracellular [Mg2+] exist across eukaryotic kingdoms. Central roles for Mg2+ in metabolism suggest that Mg2+ rhythms could regulate daily cellular energy and metabolism. In this Perspective paper, we propose that ancestral prokaryotic transport proteins could be responsible for mediating Mg2+ rhythms and posit a feedback model ...
Helen K. Feord, Gerben van Ooijen
wiley +1 more source