Abstract
In this letter, we present a new approach to narrowband interference (NBI) suppression utilizing the weighted-type fractional Fourier transform (WFRFT) as a precoding scheme in the DFT-based communications systems. The proposed scheme can degenerate into a single carrier (SC) or a multi-carrier (MC) frequency division multiple access block transmission system by means of WFRFT parameter selection, which also leads to a variation of residual energy distribution of NBI following a frequency domain avoidance strategy. By virtue of parameter optimization of the WFRFT, the proposed system can outperform both SC and MC systems with regards to NBI suppression.
| Original language | English |
|---|---|
| Article number | 6589291 |
| Pages (from-to) | 1916-1919 |
| Number of pages | 4 |
| Journal | IEEE Communications Letters |
| Volume | 17 |
| Issue number | 10 |
| DOIs | |
| State | Published - 2013 |
Keywords
- Weighted-type fractional Fourier transform (WFRFT)
- frequency division multiple access (FDMA)
- narrowband interference (NBI)
- orthogonal frequency division multiplexing (OFDM)
- precoding
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