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Category: Wireless/SDR

Wireless communications and Software Defined Radio (SDR)

A comparison of the input to a symbol-spaced versus fractionally-spaced equalizer
May 2, 2022 Wireless/SDR

A Classification of Equalization Techniques

We have seen before how a wireless channel distorts the Rx signal. The main task of DSP/comms engineer is to

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Synchronization circuit for a Minimum Shift Keying (MSK) modem
April 25, 2022 Wireless/SDR

Carrier and Clock Synchronization in MSK Signals

Minimum Shift Keying (MSK) is a versatile and spectrally efficient digital modulation scheme. On this website, I have previously written

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A composite channel model consisting of a pulse shaping filter, baseband channel and a matched filter
April 18, 2022 Wireless/SDR

Channel Estimation in Wireless Communication

Channel estimation is a special case of the system identification problem that has a long history in the field of

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Spectrum of the Nyquist pulse and its symbol rate shifted version exhibit a spectral null at 0.5 symbol rate for a 0.5 timing offset
April 11, 2022 Wireless/SDR

Why the Performance of an Equalizer Depends on Symbol Timing Phase

This post is written on an advanced topic mainly for practitioners and researchers in the design of wireless systems. For

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Multiple stable lock points in the S-curve of a decision-directed loop
April 4, 2022 Wireless/SDR

Resolving Phase Ambiguity through Unique Word and Differential Encoding and Decoding

In the context of carrier synchronization, we have discussed the Costas loop and other techniques before. Today, we discuss the

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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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