Results 41 to 50 of about 1,156,950 (116)

Inter-Turn Short Circuit Detection Based on Modulation Signal Bispectrum Analysis of Motor Current Signals [PDF]

, 2013
Motor current signature analysis (MCSA) is a common practice in industry for finding motor faults. However, because of small modulations caused by faults and high noise contamination, it is difficult to quantify the modulation in measured signals which ...
Gu, Fengshou, Ball, Andrew, Alwodai, Ahmed, Yuan, X., Ahmed, M., Shao, Y.   +5 more
core   +3 more sources

Spectral Transmission Characteristics of Andvanced Amplitude Modulation Formats

, 2013
In this paper we focus our attention on numerical investigation of high-order amplitude modulation format in single-channel transmission systems utilizing different kinds of optical fibers.
Jan Litvik, Michal Kuba, Milan Dado, Daniel Benedikovic   +3 more
core   +1 more source

Optimum Mode-Switching Assisted Adaptive Modulation

, 2001
Adaptive modulation techniques combat fading by employing a suitable modulation mode depending on the instantaneous channel conditions for improving the Bit Error Rate (BER) performance or the average through-put.
Choi, B.J., Hanzo, L.
core   +1 more source

Optimum Mode-Switching-Assisted Constant-Power Single- and Multicarrier Adaptive Modulation

, 2003
A set of optimum mode-switching levels is derived for a generic constant-power adaptive-modulation scheme based on a closed-form expression of the average bit error ratio (BER) and the average bits-per-symbol (BPS) throughput of the adaptive-modulation ...
Choi, B.J., Hanzo, L.
core   +1 more source

Rake Receiver Detection of Adaptive Modulation Aided CDMA over Frequency Selective Channels

, 2001
A closed form Bit Error Ratio (BER) formula is derived for a fixed-mode Quadrature Amplitude Modulation (QAM) scheme employing Rake receivers and receiver antenna diversity.
Choi, B.J., Hanzo, L.
core   +1 more source

Wideband Burst-by-Burst Adaptive Modulation Using Reduced-Complexity In-Phase/Quadrature-Phase Turbo Equalization

, 2002
The performance of burst-by-burst adaptive modulation is studied in conjunction with reduced complexity turbo equalization over a wideband multi-path Rayleigh fading channel.
Wong, C H, Yeap, B L, Hanzo, L
core   +1 more source

Maximum Euclidean distance network coded modulation for asymmetric decode-and-forward two-way relaying

, 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 ...
Chen, Wei, Hanzo, Lajos, Cao, Zhigang
core   +1 more source

Researches in Greece and the Levant. By the Rev. John Hartley, M.A. Late Missionary in the Mediterranean.

, 2009
Appendix.Introduction: Hartley, JohnDedication:Content description: Detailed contentsIllustration: 2 (Maps ,)Pagination: PP12+388PVolumes: 1Edition:1stText Genre:Journal / ProseIllustration: 2 (χάρτες ,
Hartley, John-Hartley, John, Traveller-Hartley, John-Hartley John, Hartley, John-Hartley John, Traveller-Hartley, John-Hartley (Rev.) John, Traveller-Hartley, John-Hartley, John, Hartley, John-Hartley (Rev.) John   +5 more
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Modulation Signal Bispectrum Analysis of Motor Current Signals for Stator Fault Diagnosis [PDF]

, 2012
Induction motors are the most widely used electrical machines in industry. To diagnose any possible incipient faults, many techniques have been developed.
Gu, Fengshou, Ball, Andrew, Xia, X., Alwodai, Ahmed, Shao, Yimin   +4 more
core   +1 more source

Modulator-free quadrature amplitude modulation signal synthesis

, 2014
The ability to generate high-speed on-off-keyed telecommunication signals by directly modulating a semiconductor laser’s drive current was one of the most exciting prospective applications of the nascent field of laser technology throughout the 1960s ...
Kelly, Brian, O’Carroll, John, Slavík, Radan, Phelan, Richard, Richardson, David J., Liu, Zhixin, Kakande, Joseph   +6 more
core   +1 more source