Does vortex beam improve the channel capacity in line-of-sight based MIMO scenario

Zian Wang

doi:10.1117/12.2674108

6 April 2023 Does vortex beam improve the channel capacity in line-of-sight based MIMO scenario

Zian Wang

Proceedings Volume 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022); 1261515 (2023) https://doi.org/10.1117/12.2674108
Event: International Conference on Signal Processing and Communication Technology (SPCT 2022), 2022, Harbin, China

Abstract

With an increasing demand of spectrum resources, multiple-input-multiple-output (MIMO) has been widely used in various communication architectures. As the frequency band goes up, line-of-sight (LoS) channel becomes the most common scenario because of the obvious straight beam path. However, the undesirable channel capacity turns into a bottleneck in LoS-MIMO system. Due to the weak correlation of vortex waves, the negative effect of low system capacity can be improved to some extent via a special OAM antenna. Compared with traditional MIMO, our simulation results indicate that channel capacities are increased by about 60-180 percent under OAM based LoS-MIMO system. Further, the wireless systems are expected to acquire a higher capacity gain through antennas number addition, spacing expansion, multi-mode gathered, etc.

Citation Download Citation

Zian Wang "Does vortex beam improve the channel capacity in line-of-sight based MIMO scenario", Proc. SPIE 12615, International Conference on Signal Processing and Communication Technology (SPCT 2022), 1261515 (6 April 2023); https://doi.org/10.1117/12.2674108

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