Abstract
A model of pseudo-random-postfix orthogonal frequency division multiplexing (PRP-OFDM) system is proposed in accordance with the needs of engineering application of unmanned aerial vehicle data link high-speed transmission. According to the requirements of UAVs' channel estimation under the fast time-varying channel, channel estimation method based on least-square, symbol recovery method with overlap add, self-interference cancellation, and decision-directed feedback are proposed. The performance of bit-error-rate (BER) is also simulated and analyzed at common mobile speed of small and medium size UAVs. The result shows that this method can get good performance on the channels of fast time-varying and has good prospects for engineering application of UAV data link high-speed transmission.
| Original language | English |
|---|---|
| Pages (from-to) | 2400-2404 |
| Number of pages | 5 |
| Journal | Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics |
| Volume | 35 |
| Issue number | 11 |
| DOIs | |
| State | Published - Nov 2013 |
Keywords
- Channel estimation
- Decision directed
- Orthogonal frequency division multiplexing (OFDM)
- Pseudo-random-postfix
- Self interference cancellation
- Unmanned aerial vehicle
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