Code design for adaptive coding and modulation indicator in broadcast systems
Summary In this paper, we address the coding problem for adaptive coding and modulator indicators in communication systems where users are divided into several classes according to their channel quality. Two novel methods are described to construct codebooks with variable length codewords forsuch an...
Uložené v:
| Vydané v: | International journal of satellite communications and networking Ročník 34; číslo 6; s. 771 - 785 |
|---|---|
| Hlavní autori: | , |
| Médium: | Journal Article |
| Jazyk: | English |
| Vydavateľské údaje: |
Chichester
Blackwell Publishing Ltd
01.11.2016
Wiley Subscription Services, Inc |
| Predmet: | |
| ISSN: | 1542-0973, 1542-0981 |
| On-line prístup: | Získať plný text |
| Tagy: |
Pridať tag
Žiadne tagy, Buďte prvý, kto otaguje tento záznam!
|
| Shrnutí: | Summary
In this paper, we address the coding problem for adaptive coding and modulator indicators in communication systems where users are divided into several classes according to their channel quality. Two novel methods are described to construct codebooks with variable length codewords forsuch an application. The proposed constructions satisfy all constraints of the system model, showing considerable gain in both the maximal and average length of codebook with respect to the current state of the art. The methodology includes a systematic way for constructing variable length codebooks where codewords are not uniformly distributed in the space, and thus, some codewords are more protected than others. The proposed construction can be easily adapted, by zero padding, to obtain a fixed block‐length code, with length equal to the maximal length of the designed variable‐length code but still smaller than that of the best state‐of‐the‐art code. Copyright © 2015 John Wiley & Sons, Ltd.
In this paper, we propose an unequal error protection coding scheme for frame headers of adaptive coding and modulation systems. We show that both the average and maximum lengths of a frame header can be reduced significantly by properly designing the codebook considering the characteristics of the given communication system. |
|---|---|
| Bibliografia: | istex:39A8522F235BD866FE1DF6AD4B40C50CD23AD84A ark:/67375/WNG-1LNXNV0Q-W ArticleID:SAT1131 ESA/ESTEC - No. 4000102300 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 content type line 23 |
| ISSN: | 1542-0973 1542-0981 |
| DOI: | 10.1002/sat.1131 |