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Baseband Signals

The difference between the baseband signal and the passband signal in communications is really quite a simple one.  The baseband signal refers to any signal that has not modulated a carrier waveform. NOTE:  The use of the verb “modulated” there may made you think twice.  If so, you are not alone.  I always used to […]

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Fourier Transform

The Frequency Domain Many physical objects have a frequency range over which they perform most of their work.  Your ears for instance, can generally only hear frequencies between 20Hz and 20 kHz.  Your own voice when speaking normally, concentrates most power in the range of 500 to 2000Hz.  You can think of these as the […]

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WCET Exam Prep – Introduction

In the beginning of 2017, I made the decision to attempt the IEEE Wireless Communication Engineering Technologies (WCET) Certification.  If you have ever read this blog, followed me on twitter or met me in the last 7 years you will know that I have had my head buried pretty deeply in Wi-Fi as I worked […]

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Is LTE-U Really Wi-Fi’s Great Challenger?

So I will admit I am writing this in a fit of pique.  Today Bloomberg published this preposterous piece of marketing flimflam claiming that LTE-U has the potential to replace or drown out Wi-Fi.  I am not sure if the consultants quoted in that article are drinking kool-aid together, but I certainly feel like they […]

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Using the ODROID C2 as a WLAN Testing Tool – Part 3: Some Exploring and Installing wicd

Previous Articles in this series: Install & Preconfigure DietPi DietPi, First Boot In the previous posts in this series I took a look at how I installed and configured DietPi on my ODROID C2.  I also went through the settings and some software packages that I wanted to install on the first boot.  I should […]

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Using the ODROID C2 as a WLAN Testing Tool – Part 1: Install & Preconfigure DietPi

This series is inspired by the “Maker Session” conducted at the WLAN Pros Conference last year in Budapest.  During the Maker Session each one of the attendees was given an ODROID C2  single board computer along with a battery pack and various other accessories including an 8GB eMMC , eMMC reader, WLAN Adapter etc.  The […]

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