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Bit Error Rate Performance Improvement for Orthogonal Time Frequency Space Modulation with a Selective
1Department of Electrical and Electronics Engineering, Faculty of Engineering, Duzce University, 81620 Duzce, Turkey.
Sensors (Basel, Switzerland)
|August 29, 2024
Summary
Orthogonal time frequency space (OTFS) modulation improves smart vehicle communication. Cooperative OTFS with selective decode-and-forward significantly enhances bit error rate performance over traditional methods.
Area of Science:
- Wireless Communications
- Signal Processing
Background:
- Orthogonal time frequency space (OTFS) modulation is effective in time-varying channels, particularly for Internet of Things (IoT) and smart vehicle communications.
- Existing single-input single-output (SISO)-OTFS studies show suboptimal Bit Error Rate (BER) performance.
- Cooperative communication strategies can improve BER, but OTFS integration in this area is underexplored.
Purpose of the Study:
- To investigate the performance of OTFS waveform transmission within a selective decode-and-forward (SDF) cooperative communication framework.
- To address the limited research on OTFS in cooperative communication scenarios for enhanced reliability.
Main Methods:
- A cooperative communication model was established, comprising a source (base station), a relay (traffic sign), and a destination (smart vehicle).
- An end-to-end Bit Error Rate (BER) expression was derived for the proposed SDF-OTFS scheme.
- Signal-to-Noise Ratio (SNR) versus BER analysis was conducted.
Main Results:
- The SDF-OTFS scheme demonstrated superior BER performance compared to traditional point-to-point SISO-OTFS.
- The cooperative approach effectively mitigates channel impairments, leading to improved communication reliability.
Conclusions:
- The study validates the effectiveness of SDF cooperative communication for OTFS waveform transmission.
- This approach offers a promising solution for enhancing the reliability of future wireless systems, including smart vehicle networks.
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