Error and outage performance of the FBMC-based OTFS using large-scale and massive MISO-NOMA with millimeter-wave channel by LOS and NLOS paths impact

Due to the necessity of working under high mobility conditions in the next generation of mobile network communications, employing a practical multicarrier technique like Orthogonal Time Frequency Space (OTFS) is quite beneficial. OTFS could be perceived as a pre- and post-processing steps for the Orthogonal Frequency-Division Multiplexing (OFDM)-based techniques such as OFDM and Filter Bank Multi-Carrier (FBMC). Therefore, to achieve a better performance, we extended the FBMC by practicing the OTFS and designed the FBMC-based OTFS technique which benefits from both OTFS and FBMC characteristics. Also, to obtain massive connectivity and larger spectral efficiency, Non-orthogonal multiple access (NOMA) can be united with millimeter-Wave (mmWave) communication where the mmWave channel includes both line-of-sight (LOS) and non-line-of-sight (NLOS) path components. Based on the distance between the base station (BS) and users, novel pairing schemes are introduced which are composed of 3 capital words where the first, second and third words show the position of the near, mid-cell and far users to BS, respectively. The novel schemes are, (1) random near, random mid-cell and random far users (RRR), (2) nearest near, nearest mid-cell and nearest far users (NNN), and (3) nearest near, farthest mid-cell and farthest far users (NFF). To supply better performance in proposed schemes, massive number of antennas are considered for BS while each user has a single antenna. Concluded simulation results in the error and outage probability (OP) terms could certificate our system superiority over similar works.