Abstract
A new scheme based on discrete cosine transform (DCT) and its inverse is proposed to realize the discrete multitone modulation (DCT-based-DMT) system. IDCT/DCT is used to construct the DMT system by replacing the IFFT/FFT transform to complete multi-carrier modulation. Then, the peak to average power ratio (PAPR) performance of the proposed system is analyzed. Based on these results, an energy compressional DCT algorithm is proposed to reduce the PAPR of DCT-based-DMT system. Compared with the DMT system based on the selected mapping algorithm (SLM-FFT-DMT), the proposed DCT-based-DMT system with DCT algorithm provides 1.5 dB PAPR reduction and lower complexity.
| Original language | English |
|---|---|
| Pages (from-to) | 168-172 |
| Number of pages | 5 |
| Journal | Shuju Caiji Yu Chuli/Journal of Data Acquisition and Processing |
| Volume | 27 |
| Issue number | 2 |
| Publication status | Published - Mar 2012 |
| Externally published | Yes |
Keywords
- Complementary cumulative distribution function
- Discrete cosine transform
- Discrete multitone modulation
- Peak to average power ratio
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