Abstract
The influence of the electrical phase modulation index h in the performance of constant-envelope orthogonal frequency division multiplexing (CE-OFDM) in coherent detection optical systems is treated analytically and its range of validity examined by simulations. A compromise between h and subcarrier mapping is identified according to differences in sensitivity related to non-linearities inserted by the optical modulator. It is shown that the proposed scheme outperforms conventional coherent detection OFDM systems, which is strongly dependent on both phase and optical modulation indexes.
Original language | English |
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Pages (from-to) | 30-34 |
Number of pages | 5 |
Journal | Optical Fiber Technology |
Volume | 37 |
DOIs | |
Publication status | Published - 1 Sep 2017 |
Externally published | Yes |
Keywords
- Coherent detection
- Constant-envelope
- Orthogonal frequency division multiplexing
- Phase modulation index