Calculation and error bound of Min-approximated bitwise log-likelihood ratios of generalised M-ary PAM
In modern digital communication systems, a high-order modulation and advanced channel coding are often jointly used to increase the spectral efficiency and coding gain. In this work, the authors investigate a computationally efficient method for evaluating...
| Principais autores: | , |
|---|---|
| Formato: | Artigo |
| Idioma: | English |
| Publicado em: |
Wiley
2019-11-01
|
| coleção: | The Journal of Engineering |
| Assuntos: | |
| Acesso em linha: | https://digital-library.theiet.org/content/journals/10.1049/joe.2019.1056 |
| Resumo: | In modern digital communication systems, a high-order modulation and advanced channel coding are
often jointly used to increase the spectral efficiency and coding gain. In this
work, the authors investigate a computationally efficient method for evaluating
the bitwise log-likelihood ratios of generalised M-ary pulse
amplitude modulation (PAM) signals with the Min approximation. The proposed
scheme is simple and can be applied to demodulate the M-ary PAM
having an arbitrary symbol spacing and a bit stream mapping. The computational
complexity and upper bounds of the approximation error are also provided for a
better understanding of the proposed scheme. |
|---|---|
| ISSN: | 2051-3305 |