Recorded signals from real-time OTFS SDR system in optical and back-to-back links

Dataset containing recorded experimental data from the real-time orthogonal time-frequency space (OTFS) software-defined radio (SDR) communication system in optical and back-to-back (B2B) links. Measurements were conducted with a 6GHz carrier frequency, with an object (metal plate) located at a 3m distance from the antennas. Data is inside .mat files with a results structure containing these fields: chan - recorded OTFS 16x10 matrices after linear minimum mean square error (LMMSE) estimation; ber - calculated bit error ratio (BER) of a measurement; ser - calculated symbol error ratio (SER) of a measurement; data_frame - transmitted data frame; rxqam - last 1000 4-quadrature amplitude modulation (QAM) symbols; tx_serial - transmitted signal before SDR; rx_serial - received signal after SDR. The title of each file also defines the SDR transmitted power, applied carrier frequency offset (CFO) at the receiver side and type of link used. An example of the title: "260121exp_otfs_tx42dB_0Hz.mat" - SDR transmitter power at 42dB, CFO at 0Hz, optical link; "260121exp_otfs_tx87dB_142Hz_b2b.mat" - SDR transmitter power at 87dB, CFO at +142Hz, B2B link. "_moving" denotes measurement with a moving object at 1.5-2m that was moved back and forth with an inconsistent period and speed.