Abstract
For Orthogonal Frequency-Division Multiplexing (OFDM) communication systems with high mobile speed, the frequency offset caused by Doppler frequency offset and the frequency differences will introduce Inter-Carriers Interference (ICI), which degrades the performance. Based on the analysis of the interference mechanism of ICI, a high efficient ICI cancellation scheme based on differential coding in terms of channel estimation is introduced. This scheme improves the spectrum usage efficiency of ICI self-cancellation. And compared with the normal OFDM system, the proposed scheme has 4dB channel estimation improvement and avoid the error floor caused by ICI.
| Original language | English |
|---|---|
| Pages (from-to) | 1529-1532 |
| Number of pages | 4 |
| Journal | Dianzi Yu Xinxi Xuebao/Journal of Electronics and Information Technology |
| Volume | 29 |
| Issue number | 7 |
| State | Published - Jul 2007 |
Keywords
- Channel estimation
- Differential coding
- ICI
- Mobile communication
- OFDM
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