examples.rx_grid_magnitude_demo Namespace Reference

Functions
np.ndarray	normalize_rms (np.ndarray x, float target_rms=1.0)
int	offset_samples_to_pss_cp_start (OFDMDemodulator ofdm_demod, bool normal_cp)
int	samples_per_subframe (OFDMDemodulator ofdm_demod)
	find_pss_peak (PSSSynchronizer pss_sync, np.ndarray rx, int tau_expected, int fft_size, int|None win)
	main ()

Variables
	PROJECT_ROOT = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))

Detailed Description

RX-only: Demodulirani grid magnitude (poslije FFT) + oznake za PSS i PBCH

- generiše TX waveform (da RX ima "input")
- provuče kroz AWGN (opcionalno)
- PSS korelacija -> poravnanje na start SF0
- OFDM demod (FFT + CP remove) -> rx_grid_full i rx_grid_active (72xNs)
- heatmap |grid| (dB) + jasne oznake PSS i PBCH (boje + overlay + strelice)

Pokretanje:
    python examples/rx_grid_magnitude_demo.py
    python examples/rx_grid_magnitude_demo.py --snr 20 --seed 1

Output:
    examples/results/rx/rx_grid_magnitude_heatmap.png

    
Napomene:
    SF==SUBFRAME

Function Documentation

find_pss_peak()

examples.rx_grid_magnitude_demo.find_pss_peak	(	PSSSynchronizer	pss_sync,
		np.ndarray	rx,
		int	tau_expected,
		int	fft_size,
		int | None	win )

Vraća: (tau_hat, n_id_2_hat, peak_value)

offset_samples_to_pss_cp_start()

int examples.rx_grid_magnitude_demo.offset_samples_to_pss_cp_start	(	OFDMDemodulator	ofdm_demod,
		bool	normal_cp )

Koliko uzoraka od starta subfrejma do CP-start PSS simbola u SF0.
Normal CP: PSS u l=6 (zadnji simbol slota0) -> prolaziš simbole 0..5.
Extended CP: PSS u l=5 (zadnji simbol slota0).