Course record
Digital Communications
I use the saved course file to reconnect sampling, baseband transmission, digital modulation, and error-rate analysis.
Unit numbers expand topics from the saved file into a concept sequence, not an attendance-week record.
12 Units
Weekly study sequence
- W01Digital Communication System ModelSource and channel · Transmitter and receiver · Baseband and passband
- W02Sampling and QuantizationNyquist sampling · Aliasing · Quantization noise
- W03PCM and Line CodingPCM frames · NRZ and Manchester · DC content
- W04Probability and Noise ModelsRandom variables · Gaussian noise · Power spectral density
- W05Pulse Shaping and PAMSymbol pulses · Raised-cosine filters · Roll-off factor
- W06ISI and the Nyquist CriterionInter-symbol interference · Zero-ISI condition · Eye diagrams
- W07Matched Filters and DetectionCorrelators · Matched filters · Decision thresholds
- W08ASK, FSK, and PSKCoherent detection · Signal constellations · Orthogonality
- W09QPSK and QAMI/Q representation · Symbol mapping · Gray coding
- W10BER and Error ProbabilityQ-function · Eb/N0 · Theoretical BER
- W11Carrier and Timing SynchronizationCarrier offset · Phase offset · Symbol timing
- W12Channel Coding and Link SimulationBlock codes · Coding gain · AWGN links
How I use this hub
I open one unit at a time, restate the core terms, and compare equations, circuits, code, and saved results.