Week 08
ASK, FSK, and PSK
I use the saved course file to reconnect sampling, baseband transmission, digital modulation, and error-rate analysis.
What I connect in this unit
ASK maps bits to amplitude, FSK to frequency, and PSK to phase. Coherent detection uses a carrier reference, while constellation distance and waveform orthogonality determine error susceptibility for a given bit energy.
Concept map
- Coherent detection
- Signal constellations
- Orthogonality
- Bit energy
Technical anchor
Coherent BPSK points lie at ±√Eb with distance 2√Eb, whereas coherent orthogonal BFSK signals are separated by √(2Eb).
How I review it
Draw basis-function coordinates for ASK, orthogonal FSK, and BPSK, compare energy and minimum distance, and list the carrier or frequency references each receiver needs.
Connection to the full course
Unit 8 of 12. Unit numbers expand topics from the saved file into a concept sequence, not an attendance-week record.