Outage analysis of OTFS system over time-varying and block time-varying Rician fading channels
Orthogonal Time Frequency Space (OTFS) modulation is a potential radio interface technique for integrated terrestrial and non-terrestrial networks due to its resilience against severe Doppler spread and high carrier frequency offsets. We derive a lower-bound outage probability expression for single-...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025021747 |
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| Summary: | Orthogonal Time Frequency Space (OTFS) modulation is a potential radio interface technique for integrated terrestrial and non-terrestrial networks due to its resilience against severe Doppler spread and high carrier frequency offsets. We derive a lower-bound outage probability expression for single-user OTFS transmission over Rician time-varying channels and show that numerical simulations align with the analytical expression. We analyze the impact of the OTFS parameters M and N on the achievable rate and demonstrate that, for a fixed delay-Doppler channel, the achievable rate is primarily determined by the SNR, rather than the specific values of M and N. We also provide outage analysis over block time-varying channels and show the impact of number of channel blocks on channel diversity. Finally, we extend our analysis to single-user multi-antenna OTFS transmissions. |
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| ISSN: | 2590-1230 |