carrier

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Related to frequency modulation: phase modulation, amplitude modulation

carrier

n. in general, any person or business which transports property or people by any means of conveyance (truck, auto, taxi, bus, airplane, railroad, ship), almost always for a charge. The carrier is the transportation system and not the owner or operator of the system. There are two types of carriers: common carrier (in the regular business or a public utility of transportation) and a private carrier (a party not in the business, but agrees to make a delivery or carry a passenger in a specific instance). Regular transportation systems are regulated by states and by the Interstate Commerce Commission if they cross state lines. (See: common carrier, private carrier)

carrier

noun conveyor, dispatcher, express shipper, ferrier, shipper, steamship company, transferor, transport company
Associated concepts: air carriers, baggage, carrier by air, carrier engaged in interstate commerce, carrier for hire, carrier of goods, carrier of passengers, carrier's lien, common carriers, forwarding carriers, initial carriers, motor vehicle carrier, operrting carriers, private carriers, public carriers, railroad carriers
See also: bearer

carrier

see COMMON CARRIER, CARRIAGE BY ROAD.
References in periodicals archive ?
The VI for frequency modulation is designed using equation 10 and is presented in Figure 3.
But the team still faced the problem of reliability, so they turned to optical frequency modulation.
Tenders are invited for Supply ofMaster Unit Communication, Panel for TDM,PAM, PWM, PPM, Module for carrier modulation and demodulation, Module for Delta, adaptive delta and sigma delta modulation, Module for analog modulation and demodulation, Module for frequency modulation and demodulation, Module for data formatting/ reformatting experiment, Module for fourier analysis synthesis experiment, Module for DPCM/ADPCM, Module for 4- channel CDMA, Module for PSK, QPSK, MSK etc, DSP Techbook, DSP Trainer (5 user license), PID Controller Trainer etc.
The concept involves phase modulation of the interrogating microwave field, rather than the traditional frequency modulation used in most atomic clocks.
It was also transmitted over frequency modulation radio and also telephone lines.
Contract notice: Maintenance contract and maintenance of facilities and television frequency modulation facilities.
An international group of contributors working in optics and photonics, physics, applied mathematics, engineering, neuroscience, and life, chemical, and social sciences discuss multiple four-wave mixing processes; amplified femtosecond fiber lasers; the intra-cavity dynamics, possible operation modes, and performance optimization of the laser cavity; bacterial cell interactions with optical fiber surfaces; single-frequency fiber lasers; the properties of frequency modulation mode-locked lasers; the operation of passively mode-locked lasers with nonlinear optical loop mirrors; and the use of laser scanning in eye movements.
This can be likened to improved quality of Frequency Modulation (FM) versus traditional Amplitude Modulation (AM).
FM -standing for frequency modulation - was first proposed in a scientific paper written by Edwin Armstrong in 1922.

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