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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Beygi, L. Agrell, E. Karlsson, M. |
| Copyright Year | 2012 |
| Description | Author affiliation: Chalmers University of Technology, Sweden (Beygi, L.; Agrell, E.; Karlsson, M.) |
| Abstract | A low complexity hybrid polar low-density parity check (LDPC) coded modulation (CM) scheme is introduced for a single-wavelength fiber-optical channel. In the proposed scheme, we exploit a low complexity probabilistic shaping together with a four-dimensional (4D) mapping to reduce the complexity of a 4D non-binary LDPC CM scheme for fiber-optic channels. The proposed scheme has a flexible structure and it can be used as an adaptive-rate CM scheme. The numerical results show that the forward error correction (FEC) threshold of the introduced CM scheme can be significantly improved by probabilistic shaping with a negligible increase in the system complexity. In particular, the FEC threshold for the uncoded symbol error rate of the introduced CM scheme with 4D 16-ary quadrature amplitude modulation can be improved from 0.058 to 0.072 by exploiting a shaping overhead (redundancy) of 0.016 for an information bit error rate of $10^{−5}.$ |
| Starting Page | 331 |
| Ending Page | 335 |
| File Size | 231900 |
| Page Count | 5 |
| File Format | |
| ISBN | 9781467349420 |
| e-ISBN | 9781467349413 |
| e-ISBN | 9781467349406 |
| DOI | 10.1109/GLOCOMW.2012.6477592 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-12-03 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | fiber-optic channel Chromatic dispersion adaptive coded modulation Probabilistic logic Encoding Complexity theory polar code Information rates FEC threshold low density parity check code (LDPC) Coded modulation Modulation nonlinear Kerr-effect Forward error correction probabilistic shaping Parity check codes |
| Content Type | Text |
| Resource Type | Article |
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