# Category: Physical Layer

## Overview of Circuit Switching and Packet Switching

This post gives a brief overview of circuit switching and packet switching. This post also briefly describes VC based and datagram based packet switching with examples.

## Overview of Circuit Switching and Packet Switching

This post gives a brief overview of circuit switching and packet switching. This post also briefly describes VC based and datagram based packet switching with examples.

## Overview of Channel Multiplexing Techniques

Gives a brief overview of Channel Multiplexing techniques like TDM, FDM and SDM. Also discusses their application in computer communication.

## Overview of Channel Multiplexing Techniques

Gives a brief overview of Channel Multiplexing techniques like TDM, FDM and SDM. Also discusses their application in computer communication.

## Relationship between Bandwidth, Data Rate and Channel Capacity

This post describes the relationship between signal bandwidth and data rate. It also discusses Nyquist and Shannon’s criteria for deriving the channel capacity for different types of communication channels.

## Relationship between Bandwidth, Data Rate and Channel Capacity

This post describes the relationship between signal bandwidth and data rate. It also discusses Nyquist and Shannon’s criteria for deriving the channel capacity for different types of communication channels.

## Bandwidth Estimation of a Signal using Fourier Analysis

This post explains the use of Fourier series in finding out the bandwidth occupied by any electomagentic signal. The post describes the Fourier series representation for a periodic signal as well as for an A-periodic signal.

## Bandwidth Estimation of a Signal using Fourier Analysis

This post explains the use of Fourier series in finding out the bandwidth occupied by any electomagentic signal. The post describes the Fourier series representation for a periodic signal as well as for an A-periodic signal.

## Overview of Digital Transmission Process in Computer Communication

Gives an overview of the digital transmission process for both analog and digital data. Illustrates fundamental differences between different digital line encoding methods with examples. Also briefly describes the importance of DC-Balancing and clocking with examples.

## Overview of Digital Transmission Process in Computer Communication

Gives an overview of the digital transmission process for both analog and digital data. Illustrates fundamental differences between different digital line encoding methods with examples. Also briefly describes the importance of DC-Balancing and clocking with examples.