Integrating optical communication in MIMO-OTFS using hybrid signal detection methods: analyzing the throughput and spectrum

Abstract MIMO-OTFS (multiple input multiple output in orthogonal time-frequency space) modulation is a key component of sophisticated optical radio systems, helping to increase their speed and range. The increased capacity of optical communication can be put to use in a number of applications. In order to minimize latency, we optimize the bit error rate (BER) and power spectral density (PSD) of the framework by applying the hybrid signal detection technique known as zero forcing equalizer and minimal mean square error (ZFE + MMSE) to the MIMO-optical OTFS system (16 × 16, 64 × 64, and 256 × 256) in this article. The suggested ZFE + MMSE works better than the traditional signal detection algorithms, according to the work’s experimental study. Furthermore, without using any detection techniques, the MIMO-OTFS outperforms the MIMO-OFDM by attaining an SNR gain of 1.2–2.3 dB.