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Tag: Linear Time-Invariant (LTI)

A complex sinusoid scaled by r>1
March 21, 2022 DSP

A Visualization of Causality and Stability in z-Transform

Most of the books and resources explain the z-Transform as a mathematical concept rather than a signal processing idea. Today

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A complex number
May 2, 2021 DSP

Convolution and Fourier Transform

One question I am frequently asked is regarding the definition of Fourier Transform. A continuous-time Fourier Transform for time domain

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Time and frequency response of a lowpass FIR filter designed with Parks-McClellan algorithm for N=33
August 30, 2016 DSP

Finite Impulse Response (FIR) Filters

We learned in the concept of frequency that most signals of practical interest can be considered as a sum of

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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.

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A signal broken down into scaled and shifted impulses
August 9, 2016 DSP

Convolution

Understanding convolution is the biggest test DSP learners face. After knowing about what a system is, its types and its

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5G Physical Layer - An Easy Guide to Key Technologies
Learn about 5G physical layer through great visualizations, simple maths and intuitive explanations
A wireless channel with speakers and microphone
Send and receive wireless signals over the air without expensive SDR hardware through a speaker (Tx) and a microphone (Rx)

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