Results 241 to 250 of about 718,685 (289)

Pulse Position Modulation and Extended Pulse Position Modulation with Squeezed Light

Journal of Modern Optics, 1994
Abstract It is shown that the performance of optical communication systems that use pulse position modulation and direct photon counting can be improved with the use of squeezed states. The effect of noise is studied. An improved version of the pulse position modulation called extended position modulation is also considered.
A. Vourdas, J.R.F. da Rocha
openaire   +1 more source

Soliton pulse position modulation

IEE Proceedings J Optoelectronics, 1993
The phenomenon of a train of optical fibre solitons, modulated in some way by impressed disturbances, is increasingly being identified as a new type of dynamical system, with interesting dynamical behaviour which can be studied both experimentally and mathematically.
openaire   +1 more source

Compound Pulse Position Modulation Codes

2006 IEEE International Symposium on Information Theory, 2006
A general class of nonlinear compound pulse position modulation (CPPM) codes is introduced to incorporate nonlinear low-rate PPM constraints directly into a Tanner-like code graph on which iterative decoding can be performed. The iterative decoding algorithm is specified for these codes, including the extrinsic message computations at the nonlinear ...
Sam Dolinar, Kenneth S. Andrews
openaire   +2 more sources

Antenna Array Based Positional Modulation with a Two-Ray Multi-Path Model [PDF]

, 2018
Traditional directional modulation (DM) designs are based on the assumption that there is no multi-path effect between transmitters and receivers. One problem with these designs is that the resultant systems will be vulnerable to eavesdroppers which are ...
Wei Liu
exaly   +2 more sources

Positive Modulators of Muscle Acetylcholine Receptor

Journal of Receptor Research, 1989
A solution of succinic anhydride (SA) in buffer N-tris(hydroxymethyl)methyl-2-aminoethane sulfonic acid (TES), the SATES solution, potentiates the effect of carbonyl containing agonists on frog muscle (del Castillo et al., Br. J. Pharmac. 84: 275-288, 1985). Here we report that the main compound in the SATES solution is a monosuccinyl ester of TES (MST)
V A, Eterovic, G, Escalona de Motta, R M, Hann, J A, Lasalde, J A, Prieto, P A, Ferchmin   +5 more
openaire   +2 more sources

Polarization differential pulse position modulation

Proceedings of the Seventh ACM International Conference on Underwater Networks and Systems - WUWNet '12, 2012
In underwater wireless optical communication links, pulse position modulation (PPM) and differential pulse position modulation (DPPM) are two typical modulation schemes. In this paper, we present an alternative modulation scheme to improve the communication performance compared with the traditional methods.
Xuedan Zhang, Yuhan Dong, Shijian Tang
openaire   +2 more sources

Position-based modulation in molecular communications

Nano Communication Networks, 2018
Abstract Molecular communications via diffusion (MCvD) is a new paradigm that aims establishing communications among nanomachines in a fluidic diffusive channel using messenger molecules. In general, encoding and decoding of messages are done by the number and/or type of the molecules.
Bayram Cevdet Akdeniz, Ali Emre Pusane, Tuna Tugcu   +2 more
openaire   +2 more sources

Position-Marked Layered Optical Spatial Modulation with Pulse Position Modulation

2021 13th International Conference on Advanced Infocomm Technology (ICAIT), 2021
Huiqin Wang, Guiqing Ye, Yating Li, Yue Zhang   +3 more
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B2A as a positive BMP receptor modulator

Growth Factors, 2012
B2A (B2A2-K-NS) is a synthetic multi-domain peptide that in vitro augments bone morphogenetic protein (BMP)-2-induced cell responsiveness and osteodifferentiation. Augmentation of endogenous BMP-2 is thought to ultimately improve bone repair, and has led to clinical evaluation of B2A in orthopedic applications.
Xinhua, Lin, Henry, Guo, Kazuyuki, Takahashi, Yi, Liu, Paul O, Zamora   +4 more
openaire   +2 more sources

On the Bound of the Eigenvalue in Module for a Positive Tensor

Journal of the Operations Research Society of China, 2016
The authors obtain a bound for a ratio of the largest eigenvalue and second largest eigenvalue in module for a higher-order tensor, following the definitions of eigenpairs introduced by \textit{L. Qi} [J. Symb. Comput. 40, No. 6, 1302--1324 (2005; Zbl 1125.15014)] and \textit{L. H.
Li, Wen, Liu, Wei-Hui, Vong, Seak-Weng
openaire   +2 more sources