Cdma Workshop — V3.4.1 Demo.rarl

# ------------------------------------------------------------ # 1. Workspace creation # ------------------------------------------------------------ ws = cw.Workspace(name="3User_Rayleigh")

#!/usr/bin/env python3 # ------------------------------------------------------------ # 3‑User CDMA Uplink Demo – Rayleigh fading # ------------------------------------------------------------ import cdma_workshop as cw import numpy as np Cdma Workshop V3.4.1 Demo.rarl

# ------------------------------------------------------------ # 2. Define three independent users # ------------------------------------------------------------ users = [] code_set = cw.codes.Walsh(64) # 64‑chip Walsh codes for i in range(3): src = cw.blocks.Source(data_type='binary', rate=1e6, length=2**14) # 16 kbits per packet spd = cw.blocks.Spread(code=code_set[i]) users.append((src, spd)) spd in users: ws.add_chain([src

ws.add_chain([rx_spd, eq, dem, err])

# ------------------------------------------------------------ # 7. Export results # ------------------------------------------------------------ ws.export_results('3User_Rayleigh_BER.csv') ws.plot('BER_vs_SNR', export='PNG') print("Demo completed – results saved to 3User_Rayleigh_BER.csv") Cdma Workshop V3.4.1 Demo.rarl

# ------------------------------------------------------------ # 5. Assemble the full chain # ------------------------------------------------------------ for src, spd in users: ws.add_chain([src, spd, chan])