Basics 9 min read
Classification of Modems
Modem word came from the combination of two words modulator and demodulator. A modem is a hardware device that enables…
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Basics 3 min read
Types of Modems
• Modems can be of several types and they can be categorized in a number of ways. • Categorization is…
Basics 5 min read
What is a Modem?
Modem is abbreviation for Modulator – De-modulator. Modems are used for data transfer from one computer network to another computer network through telephone lines. The…
Basics 2 min read
Quadrature Phase Shift Keying
The Quadrature Phase Shift Keying QPSKQPSK is a variation of BPSK, and it is also a Double Side Band Suppressed Carrier DSBSCDSBSC modulation scheme, which…
Basics 2 min read
Phase Shift Keying
Phase Shift Keying PSKPSK is the digital modulation technique in which the phase of the carrier signal is changed by varying the…
Basics 3 min read
Frequency Shift Keying
Frequency Shift Keying FSKFSK is the digital modulation technique in which the frequency of the carrier signal varies according to the digital…
Basics 2 min read
Amplitude Shift Keying
Amplitude Shift Keying ASKASK is a type of Amplitude Modulation which represents the binary data in the form of variations in the…
Basics 2 min read
What is parallel transmission?
When data is sent using parallel data transmission, multiple data bits are transmitted over multiple channels at the same time. This means that…
Basics 2 min read
What is serial transmission?
When data is sent or received using serial data transmission, the data bits are organized in a specific order, since they can only…
Basics 4 min read
Quantization
The digitization of analog signals involves the rounding off of the values which are approximately equal to the analog values.…