Direct-Detection Receiver for 16-QAM Modulated Signals (ECOC 2024, Bekele et al.) - BER measurement data

Back-to-back BER measurements for a silicon photonic direct-detection receiver that decodes star-16QAM signals. The receiver splits the incoming signal into a phase detection branch (SOA + ring resonator, producing PAM7) and an intensity detection branch (producing PAM4). Four experimental conditions are provided, each as a power sweep at 10 Gbd over 0 km fiber. For each power step the dataset contains the raw oscilloscope waveform (time vs voltage, 80 GSa/s, ~248 MB per file) and the post-DSP BER/SER/SNR result. This dataset supports Figure 3(c) of the associated ECOC 2024 paper (DOI: 10.5281/zenodo.20429477). Folders: 16QAM_PAM7_0km/ -- star-16QAM input, phase branch (PAM7), 11 power steps QPSK_PAM7_0km/ -- QPSK-only input, phase branch (PAM7), 12 power steps QPSKoff_PAM4_0km/ -- PAM4-only input, intensity branch (PAM4), 21 power steps QPSKon_PAM4_0km/ -- star-16QAM input, intensity branch (PAM4), 21 power steps Each folder contains Raw_data/ (waveform .txt files) and a BER results folder (BER-21taps/ or BER-7taps/, _results.txt files). A codebook (ECOC2024_BER_dataset_codebook.yaml) is included with full variable definitions and instrument details.