Digital Communication 1 min read
M-ary Encoding
he word binary represents two bits. M represents a digit that corresponds to the number of conditions, levels, or combinations possible for…
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Pulse Shaping
After going through different types of coding techniques, we have an idea on how the data is prone to distortion…
Digital Communication 1 min read
Data Encoding Techniques
Encoding is the process of converting the data or a given sequence of characters, symbols, alphabets etc., into a specified format,…
Digital Communication 1 min read
Power Spectral Density
The function which describes how the power of a signal got distributed at various frequencies, in the frequency domain is…
Digital Communication 2 min read
Bipolar Signaling
This is an encoding technique which has three voltage levels namely +, – and 0. Such a signal is called as duo-binary signal. An…
Digital Communication 1 min read
Unipolar Return to Zero RZ RZ
In this type of unipolar signaling, a High in data, though represented by a Mark pulse, its duration T0 is less than the…
Digital Communication 2 min read
Polar Signaling
There are two methods of Polar Signaling. They are − Polar NRZ Polar RZ Polar NRZ In this type of…
Digital Communication 2 min read
Line Codes
A line code is the code used for data transmission of a digital signal over a transmission line. This process of coding…
Digital Communication 3 min read
Delta Modulation
The sampling rate of a signal should be higher than the Nyquist rate, to achieve better sampling. If this sampling…
Digital Communication 4 min read
Spread Spectrum Modulation
A collective class of signaling techniques are employed before transmitting a signal to provide a secure communication, known as the Spread…
Digital Communication 5 min read
Time Division Multiplexing (TDM)
Definition: A multiplexing technique by which multiple data signals can be transmitted over a common communication channel in different time…
Digital Communication 1 min read
Quantization Noise and Signal-to-Noise
“The Quantization process introduces an error defined as the difference between the input signal, x(t) and the output signal, yt).…
