Technical Sharing
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2026-09-05【Part 3】Receiver Fundamentals: Finding the Optimal Sampling Instant — Timing Recovery Loop Theory and Practical Measurement
Receiver Fundamentals: Finding the Optimal Sampling Instant — Timing Recovery Loop Theory and Practical MeasurementLearn More -
2026-08-29【Part 2】From Chaotic Constellations to QPSK Clusters: Practical Costas-Loop Carrier-Synchronization Measurements with GNU Radio
Part 2 of series: SDR digital-communication receiver fundamentals In our previous article, we covered pulse-shaping, digital front-ends, ADC/DAC, crystal oscillators and frequency synthesis across the transmit chain. We also demonstrated how independent reference clocks for transmitter and receiver produce residual carrier-frequency offset (CFO), even when identical nominal carrier frequencies are configured.Learn More -
2026-08-19【Part 1】Clock Accuracy and Carrier Frequency Offset Experiments with the PZSDR P201Pro SDR
In digital SDR communication experiments, reference clock performance directly impacts carrier synchronization difficulty. Larger frequency offsets place heavy burden on carrier recovery algorithms. This article presents practical GNU Radio measurements comparing two popular SDR platforms, focusing on how oscillator PPM error translates into real‑world carrier frequency offset (CFO).Learn More
