Generation of 16QAM Baseband Signals with Real-Number Interpolation
MATLAB implementation for generating 16QAM baseband signals with real-number interpolation. The system operates at 1 MSymbol/s symbol rate using root-raised cosine filtering with roll-off factor=0.5. A pseudo-random sequence {…1, 0, 1, 1,…} undergoes constellation mapping, 4x shaping filter, FIR half-band filtering, and real-number interpolation filtering, ultimately producing 4.315x time/frequency domain responses. The implementation includes comprehensive time-domain and frequency-domain analysis at each filtering stage.