Quadrature Amplitude Modulation (QAM) is a spectrally efficient modulation scheme used in most of the high-speed wireless networks today. We
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Tag: Phase Recovery
Location Estimation through Differential Phase Difference of Arrival
In an article on carrier phase based ranging, we saw how phase observations were employed to find the range between
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Non-Data-Aided Carrier Phase Estimation
A carrier phase offset rotates the Rx constellation causing decision errors even in a perfectly noiseless environment. One of the
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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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How to Detect a Carrier Lock in an SDR
We have discussed before the effect of a phase offset on the received signal. We have also seen a logical
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