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Category: Wireless/SDR

Wireless communications and Software Defined Radio (SDR)

A Phase Locked Loop (PLL) for digital symbol timing recovery
August 3, 2016 Wireless/SDR

Phase Locked Loop (PLL) for Symbol Timing Recovery

A Phase Locked Loop (PLL) is a device used to synchronize a periodic waveform with a reference periodic waveform. It

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A channel with 8 taps demonstrating the main cursor, precursor ISI and postcursor ISI
January 31, 2022 Wireless/SDR

How Decision Feedback Equalizers (DFE) Work

We started the classification of equalization algorithms by introducing the need for equalization in wireless communication systems. We said that

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Block diagram of a 4 symbol communication system
August 1, 2016 Wireless/SDR

Packing More Bits in One Symbol

Note that digital electronics are constrained to work on only two levels by electronic switches which in the simplest case

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Frequency domain beamforming implements a procedure for broadband signals that resembles the conventional narrowband beamformers
November 15, 2021 Wireless/SDR

Beamforming for Broadband Signals

Recall that classical or physical beamforming is based on calculating the differences in wave arrival times of a signal between

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S-curve for decision-directed maximum likelihood phase error detector
December 24, 2021 Wireless/SDR

What are Cycle Slips and Hangup in Phase Locked Loops?

In a previous article, we have covered in detail the inner workings of a Phase Locked Loop (PLL) in a

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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

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