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Category: Wireless/SDR

Wireless communications and Software Defined Radio (SDR)

A block diagram for the implementation of a digital filter and square timing recovery for L=4 samples/symbol
July 9, 2016 DSP / Wireless/SDR

Digital Filter and Square Timing Recovery

We have seen before how a symbol timing offset severely impacts the constellation of the received symbols. Therefore, symbol timing

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A matched filter
July 8, 2016 DSP / Wireless/SDR

Convoluted Correlation between Matched Filter and Correlator

Now we turn out attention towards a topic that causes a lot of confusion for communications and DSP learners: what

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Spectral efficiency R_b/B versus E_b/N_0 determines the overall merit of a modulation scheme. This figure is drawn for BER = 10^{-5} and a Square-Root Raised Cosine pulse with 50% excess bandwidth
June 1, 2016 Wireless/SDR

Computing Error Rates

Having built a simple digital communication system, it is necessary to know how to measure its performance. As the names

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Minimum distance rule based detector decisions in a QPSK constellation in the presence of a carrier frequency offset
June 6, 2016 DSP / Wireless/SDR

How a Frequency Locked Loop (FLL) Works

We saw before how a carrier frequency offset distorts the received signal. Later, we also described the classification of frequency

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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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