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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Stierstorfer, C. Fischer, R.F.H. |
| Copyright Year | 2007 |
| Description | Author affiliation: Lehrstuhl fur Informationsubertragung, Friedrich-Alexander-Universitat Erlangen-Nurnberg, Erlangen (Stierstorfer, C.; Fischer, R.F.H.) |
| Abstract | Mappings for square quadrature amplitude modulation (QAM) are investigated in terms of the achievable capacity in bit-interleaved coded modulation (BICM). In G. Caire et al. (1998) it is conjectured that Gray labelings maximize this capacity. However, Gray mappings are not unique and it can be shown that the conjecture cannot hold in general for QAM constellation sizes larger than 16. Based on the bit level capacities of mappings, structures determining capacity are analyzed. Construction guidelines leading to capacity maximizing Gray mappings are presented. |
| Starting Page | 1703 |
| Ending Page | 1707 |
| File Size | 290133 |
| Page Count | 5 |
| File Format | |
| ISBN | 1424402662 |
| ISSN | 15502252 |
| DOI | 10.1109/VETECS.2007.354 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2007-04-22 |
| Publisher Place | Ireland |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Interleaved codes Modulation coding Quadrature amplitude modulation Labeling Amplitude shift keying Fading AWGN Iterative decoding Guidelines Convolutional codes |
| Content Type | Text |
| Resource Type | Article |
| Subject | Applied Mathematics Electrical and Electronic Engineering Computer Science Applications |
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