Abstract
Optimization of mapping rule of bit-interleaved Turbo coded modulation with 16 quadrature amplitude modulation (QAM) is investigated based on different impacts of various encoded bits sequence on Turbo decoding performance. Furthermore, bit-interleaved in-phase and quadrature phase (I-Q) Turbo coded modulation scheme are designed similarly with I-Q trellis coded modulation (TCM). Through performance evaluation and analysis, it can be seen that the novel mapping rule outperforms traditional one and the I-Q Turbo coded modulation can not achieve good performance as expected. Therefore, there is not obvious advantage in using I-Q method in bit-interleaved Turbo coded modulation.
| Original language | English |
|---|---|
| Pages (from-to) | 18-21 |
| Number of pages | 4 |
| Journal | Journal of Beijing Institute of Technology (English Edition) |
| Volume | 14 |
| Issue number | 1 |
| Publication status | Published - Mar 2005 |
Keywords
- Binary Turbo coded modulation
- In-phase and quadrature (I-Q) coded modulation
- Mapping rule
- Quadrature amplitude modulation (QAM)