Abstract
In the recent past the concept of MIMO (multiple input multiple output) transmission over multimode fibers has attracted increasing interest in the optical fiber transmission community, targeting at increased fiber throughput or improved bit-error rate performance. In this contribution a coherent \((2 \times 2)\) MIMO (multiple input multiple output) transmission with iterative detection over a measured multimode fiber channel at \(1325\) nm as well as at \(1570\) nm operating wavelength is studied under the constraint of a given fixed data throughput and integrity. For the channel measurements a fibre length of \(1{,}4\) km were chosen. Extrinsic information transfer (EXIT) charts are used for analyzing and optimizing the convergence behaviour of the iterative demapping and decoding. Our results show that in order to achieve the best bit-error rate, not necessarily all MIMO layers have to be activated.
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Notes
- 1.
The transpose and conjugate transpose (Hermitian) of \(\mathbf{D}\) are denoted by \(\mathbf{D}^{\mathrm {T}}\) and \(\mathbf{D}^{\mathrm {H}}\), respectively.
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Aust, S., Ahrens, A., Lochmann, S. (2014). Iteratively Detected and SVD-assisted MIMO Multimode Transmission Schemes. In: Obaidat, M., Filipe, J. (eds) E-Business and Telecommunications. ICETE 2012. Communications in Computer and Information Science, vol 455. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44791-8_8
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DOI: https://doi.org/10.1007/978-3-662-44791-8_8
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