Degrees of Freedom of Multi-Mode-Multi-Spatial (MOMS) in Line-of-Sight Channels
| Autor: | Yi Lv, Gaoning He, Rui Ni, Guangjian Wang, Merouane Debbah, Qian Zhu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Equalization
business.industry Computer science 05 social sciences Transmitter Antenna aperture 050801 communication & media studies Data_CODINGANDINFORMATIONTHEORY 02 engineering and technology Degrees of freedom (mechanics) 021001 nanoscience & nanotechnology Topology Transmitter power output Multiplexing Antenna array 0508 media and communications Wireless Rayleigh distance 0210 nano-technology business Computer Science::Information Theory Communication channel |
| Zdroj: | GLOBECOM |
| Popis: | We consider multi-antenna systems carrying OAM waveforms, which are limited by the transmit power and receive antenna aperture. Under the line-of-sight (LOS) channel condition, we propose the multi-mode-multi-spatial (MOMS) solution as a low complex and flexible engineering implementation without any loss of degrees of freedom. The basic idea of MOMS is that the transmitter uses multiple OAM waveforms to carry multiple independent data streams, and the receiver uses a multiple antenna channel equalization algorithm to de-multiplex the multiple eigenchannels. Link-level and Monte Carlo simulation show that our MOMS solution has higher capacity than common uniform linear array LOS-MIMO within the Rayleigh distance of antenna array. However, it has a lower capacity at longer distances due to the faster power intensity decrease of OAM waveforms in comparison with plane waveforms. |
| Databáze: | OpenAIRE |
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