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Category: Wireless/SDR

Wireless communications and Software Defined Radio (SDR)

Scatter plot for a QPSK signal after filtering through a channel
January 24, 2022 Wireless/SDR

An Introduction to Constant Modulus Algorithm (CMA)

In many kinds of equalizers such as maximum likelihood sequence estimation, the channel response is available at the Rx through

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A block diagram for the implementation of the feedforward phase estimator
September 24, 2019 Wireless/SDR

How to Estimate the Carrier Phase

In this article, I will describe how to estimate the carrier phase from an incoming waveform in a feedforward manner.

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A beam formation process can be seen in water waves by throwing two stones
November 15, 2021 Wireless/SDR

Beamforming in 5G Systems – Classical Beamforming

As opposed to its reputation, beamforming is not a mysterious technology. It has been used by signal processing engineers for

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Classification of carrier frequency synchronization algorithms
March 31, 2018 Wireless/SDR

Classification of Carrier Frequency Synchronization Techniques

We have discussed before that carrier phase synchronization is done at the end of the Rx signal processing chain due

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SINAD for signal, noise and distortion
December 23, 2022 Wireless/SDR

How to Compute SINAD in a Radio Receiver

In theory, the quantity that determines the performance of a radio receiver is the Signal to Noise Ratio (SNR). In

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Wireless Communications from the Ground Up - An SDR Perspective
Learn about Wireless Communications and SDR 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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