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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Transmission analysis for OFDM signals over hybrid RF-optical high-throughput satellite
Optics Express
|February 25, 2018
Summary
This study investigates satellite broadband access using orthogonal-frequency-division multiplexing (OFDM) and radio-on-fiber technology. The system shows feasibility under specific conditions, despite noise limitations in forward and reverse links.
Area of Science:
- Satellite Communications
- Optical Networking
- Signal Processing
Background:
- Geostationary satellites offer broadband access using orthogonal-frequency-division multiplexing (OFDM).
- Radio-on-fiber technology integrates radio frequency (RF) and optical components for satellite feeder links.
- Noise is a critical factor affecting system performance.
Purpose of the Study:
- To theoretically investigate the performance of a satellite broadband system employing OFDM and radio-on-fiber technology.
- To analyze the impact of noise on both forward and reverse links.
- To estimate system performance with various subcarrier modulations.
Main Methods:
- Theoretical performance analysis of a geostationary satellite communication scenario.
- Utilizing radio-on-fiber for optical-electro and electro-optical conversion.
- Estimating system performance for Quadrature Phase Shift Keying (QPSK), 16-Quadrature Amplitude Modulation (16QAM), and 64-Quadrature Amplitude Modulation (64QAM) with 1280 MHz bandwidth.
Main Results:
- The proposed satellite broadband scheme demonstrates potential but is limited by noise.
- System performance was estimated for QPSK, 16QAM, and 64QAM modulations.
- Feasibility is achieved under specific link budget and component selection criteria.
Conclusions:
- The integrated radio-on-fiber approach for satellite broadband is feasible.
- Careful consideration of link budget and component selection is crucial for mitigating noise.
- The system shows promise for future broadband satellite communication applications.
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