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| Auteurs principaux: | , , , , |
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| Format: | Preprint |
| Publié: |
2025
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| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2502.19984 |
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| _version_ | 1866916633373573120 |
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| author | Celebi, Burak Ahmet Akyol, Omer Faruk Basaran, Semiha Tedik Hokelek, Ibrahim Gorcin, Ali |
| author_facet | Celebi, Burak Ahmet Akyol, Omer Faruk Basaran, Semiha Tedik Hokelek, Ibrahim Gorcin, Ali |
| contents | This paper presents an Orthogonal Time Frequency Space (OTFS) waveform application along with a high altitude platform station (HAPS) relaying for remedying severe Doppler effects in non-terrestrial networks (NTNs). Taking practical challenges into consideration, HAPS is exploited as a decode and forward relay node to mitigate the high path loss between a satellite and a base station (BS). In addition, a maximum ratio transmission scheme with multiple antennas at the LEO-satellite is utilized to maximize Signal-to-Noise Ratio (SNR). A shadowed Rician fading model is employed for the channel realization between the LEO-satellite and the HAPS while Nakagami-m is used between the HAPS and the BS. We derive the closed-form expression of the outage probability (OP) for the end-to-end system. The theoretical and simulation results demonstrate that the OP can significantly decrease when the OTFS order and the number of transmit antennas increase. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_19984 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | On Outage Analysis of OTFS Based LEO-Satellite Systems With HAPS Relaying Celebi, Burak Ahmet Akyol, Omer Faruk Basaran, Semiha Tedik Hokelek, Ibrahim Gorcin, Ali Signal Processing This paper presents an Orthogonal Time Frequency Space (OTFS) waveform application along with a high altitude platform station (HAPS) relaying for remedying severe Doppler effects in non-terrestrial networks (NTNs). Taking practical challenges into consideration, HAPS is exploited as a decode and forward relay node to mitigate the high path loss between a satellite and a base station (BS). In addition, a maximum ratio transmission scheme with multiple antennas at the LEO-satellite is utilized to maximize Signal-to-Noise Ratio (SNR). A shadowed Rician fading model is employed for the channel realization between the LEO-satellite and the HAPS while Nakagami-m is used between the HAPS and the BS. We derive the closed-form expression of the outage probability (OP) for the end-to-end system. The theoretical and simulation results demonstrate that the OP can significantly decrease when the OTFS order and the number of transmit antennas increase. |
| title | On Outage Analysis of OTFS Based LEO-Satellite Systems With HAPS Relaying |
| topic | Signal Processing |
| url | https://arxiv.org/abs/2502.19984 |