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__________ conversion involves three techniques: line coding, block coding, and scrambling
_______ is the process of converting digital data to a digital signal
______ provides redundancy to ensure synchronization and inherent error detection
_______ is normally referred to as mB/nB coding it replaces each m-bit group with an n-bit group
_______ provides synchronization without increasing the number of bits
Two common scrambling techniques are ________
The most common technique to change an analog signal to digital data is called __________
The first step in PCM is ________
There are three sampling methods: __________
_____ finds the value of the signal amplitude for each sample ____ finds the change from the previous sample
While there is (are) only _____ way(s) to send parallel data, there is (are) three subclass(es) of serial transmission
In ______ transmission, we send 1 start bit (0) at the beginning and 1 or more stop bits (1s) at the end of each byte
In _________ transmission, we send bits one after another without start or stop bits or gaps. It is the responsibility of the receiver to group the bits
The ________ mode provides synchronization for the entire stream of bits must. In other words, it guarantees that the data arrive at a fixed rate
A _________ digital signal includes timing information in the data being transmitted
In decoding a digital signal, the receiver calculates a running average of the received signal power, called the _______
The signal rate is sometimes called the ____ rate
The data rate is sometimes called the ___ rate
In a _____ scheme, all the signal levels are on one side of the time axis, either above or below
In ______ schemes, the voltages are on the both sides of the time axis. For example, the voltage level for 0 can be positive and the voltage level for 1 can be negative
total questions: 237

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