Frequency division multiplexing

Although first demonstrated by Chantry et al. in 1964, FT-Raman spectroscopy did not attract significant attention until the development of commercially available instrumentation with excitation in the near-infrared region (1064 nm) from a continuous wave Nd/YAG (neodymium-yttrium-aluminum-gamet) laser. The FT-Raman spectrometer is a frequency-division multiplexing system in which all (scattered) wave-... 

Aural subcarrier In a composite television signal, the frequency division multiplexed carrier placed outside the visual passband that carries the audio modulation. In the NTSC (United States) system, it is placed 4.5 MHz higher than the visual carrier. 

In practice, combinations of multiplexing and access techniques may be used. A broadband may be channelized or frequency-division multiplexed and FDMA may be used in each subband, for example, FDM/FDMA. 

Frequency-division multiplexing (FDM) The process of transmitting multiple analog signals by an orderly assignment of frequency slots, that is, by dividing transmission bandwidth into several narrow bands, each of which carries a single communication and is sent simultaneously with others over a common transmission path. 

Liu, T. Fernando, G. R, A Frequency Division Multiplexed Low-Finesse Fiber Optic Fabry-Perot Sensor System for Strain and Displacement Measurements , Rev. Sci. Instrum. 2000, 71, 1275-1278. 

Learning Vector Quantization Network for PAPR Reduction in Orthogonal Frequency Division Multiplexing Systems... 

Keywords Orthogonal Frequency Division Multiplexing, Peak to Average Power Ratio, Learning Vector Quantization, Neural Network. 

Keywords Spatial Multiplexing System, Binary Ant System, Symbol detection, Mnlti-Input Multi-Output-Orthogonal Frequency Division Multiplexing (MIMO-OFDM). 

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