Results 141 to 150 of about 868,591 (197)

Modelling Management Practices in Viticulture while Considering Resource Limitations: The Dhivine Model. [PDF]

PLoS One, 2016
Martin-Clouaire R, Rellier JP, Paré N, Voltz M, Biarnès A.   +4 more
europepmc   +1 more source

Design and analysis of UW-OFDM signals.

Int J Electron Commun, 2014
Huemer M, Hofbauer C, Onic A, Huber JB.
europepmc   +1 more source

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Trellis-coded modulation with multidimensional constellations

IEEE Transactions on Information Theory, 1987
Trellis-coded modulation schemes using four-, eight-, or 16 -dimensional constellations have a number of potential advantages over the usual two-dimensional schemes: a smaller constituent two-dimensional constellation, easier tolerance to phase ambiguities, and a better trade-off between complexity and coding gain.
Lee-Fang Wei
exaly   +3 more sources

Joint trellis coded quantization/modulation

IEEE Transactions on Communications, 1991
A joint source/channel coding system constructed using trellis coded quantization (TCQ) and trellis coded modulation (TCM) is described. Identical trellises are used in the TCQ and TCM systems, and a straightforward mapping of TCQ codewords to TCM symbols is presented which guarantees that Euclidean squared distance in the channel is commensurate with ...
T R Fischer
exaly   +2 more sources

Multiple trellis coded modulation (MTCM)

IEEE Transactions on Communications, 1988
The authors demonstrate a trellis coded modulation technique referred to as multiple trellis coded modulation (MTCM) wherein more than one channel symbol per trellis branch is transmitted. They have found simple two-state trellis codes for symmetric MPSK multiple phase-shift keying and AM modulations that can achieve 3-dB gain over uncoded modulation ...
M K Simon, D Divsalar
exaly   +3 more sources

Trellis coded quadrature spatial modulation

Physical Communication, 2018
Abstract In this paper, a novel multiple-input multiple-output (MIMO) transmission scheme called trellis coded quadrature spatial modulation (TC-QSM), is proposed. In the proposed scheme, trellis coded modulation (TCM) principle is applied to the emerging quadrature spatial modulation (QSM) scheme, and a trellis encoder and a QSM mapper are jointly ...
Ertugrul Basar, Raed Mesleh, Zehra Yigit
exaly   +3 more sources

Punctured Trellis-Coded Quantization and Modulation

IEEE Transactions on Communications, 2006
We propose a punctured trellis-coded quantization (PTCQ) scheme as the dual of a known punctured trellis-coded modulation (PTCM) scheme, and then generalize a combined trellis-coded quantization/modulation (TCQ/TCM) scheme to a combined PTCQ/PTCM scheme, with rates optimally allocated between source coding and channel coding to match the given channel ...
exaly   +3 more sources

Improved codes for space-time trellis-coded modulation

IEEE Communications Letters, 2000
Space-time coded modulation has been shown to efficiently use transmit diversity to increase spectral efficiency. We propose new trellis codes found through systematic code search. These codes achieve the theoretically maximal diversity gain and improved coding gain compared to known codes.
Gerhard Bauch
exaly   +3 more sources