Basics Archives | Page 2 of 3

A digital signal and its underlying continuous waveform

February 27, 2022 Wireless/SDR

Why Digital Communication is Superior to Analog Communication

At the beginning, the history of wireless communication revolved around analog communication systems for several decades. Amplitude Modulation (AM) and

Width of a sinc signal increases and approaches a constant, just like an eagle spreading its wings

November 7, 2016 DSP

A Unit Impulse in Continuous-Time

This post treats the signals in continuous time which is different than the approach I adopted in my book which

August 26, 2016 DSP

The Concept of Frequency

A wireless signal from one device to another travels through the use of electromagnetic waves propagated by an antenna. Electromagnetic

Blocks of a simple binary communication system

August 21, 2016 Wireless/SDR

A Simple Communication System

"The fundamental problem of communication is that of reproducing at one point either exactly or approximately a message selected at

Magnitude of frequency response |H[k]| in response to complex sinusoids at all N frequencies

August 12, 2016 DSP

System Characterization

In wireless communications and other applications of digital signal processing, we often want to modify a generated or acquired signal.