Keying is Digital modulation where the data used to change the carrier wave is digital, ... 10.1 What characteristic of the carrier wave is changed to represent the data in Frequency Shift Keying (FSK)? a. amplitude b. frequency c. phase d. period. c. ... Course Hero member to access this document. Continue to access. Term. Fall. Professor. N/A.
Answer the following questions concerning modulation and keying: 8.1 What characteristic of the carrier wave is changed to represent the data in FSK? a. amplitude b. frequency c. phase d. period
Modulation in this context is the process of altering the characteristics of one wave with another, to represent data. 18. Modem • An acronym for mod ulator-dem odulator. • Uses a constant-frequency signal known as a carrier signal. • Converts a series of binary voltage pulses into an analog signal by modulating the carrier signal. • The receiving modem translates the analog …
One of the characteristics of the carrier signal (amplitude, frequency, or phase) is changed according to the modulating data Constellation Diagram A graphical representation of the phase and amplitude of different bit combinations in digital-to-analog modulation
An analog or sine wave that is modulated to eventually carry information, becoming a carrier wave.
The relative starting point of a wave, in degrees, beginning at zero degrees.
A spread spectrum technique that uses a range of frequencies and changes frequencies during the transmission.
cable is the most common transmission medium for phone and local area network (LAN) connections.
transmission ensures that sender and receiver clocks are always synchronized by sending continuous data streams.
Wireless transmission using light frequencies can occur in the infrared, visible , or ultraviolet light spectra. In theory, raw transmission rates can be much higher than for RF transmission because of higher transmission frequency and available bandwidth. As a practical matter, however, atmospheric interference creates major barriers by attenuating light signals rapidly. Infrared transmissions are effectively limited to a few dozen meters, and laser transmissions in the visible spectrum are limited to a few hundred meters. The need for an unobstructed line of sight is also a barrier to widespread use.